Regarding 'Concurrency Limits' enforced by OTT platforms, consider the following statements:
1. They restrict the maximum number of devices that can stream content simultaneously from a single user account.
2. They are enforced through the OTT platform's backend subscriber management and DRM token systems.
3. They are primarily utilized as a business strategy to curb rampant password sharing among non-subscribers.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 3
- 1 and 2
- 2 and 3
Explanation: All statements are correct. Concurrency limits are a critical revenue-protection mechanism. By limiting simultaneous streams via backend software, providers discourage users from sharing one paid account with dozens of friends.
With reference to the convergence standard 'ATSC 3.0' (NextGen TV), consider the following statements:
1. It strictly prohibits the use of HEVC video compression, mandating older legacy analog formats for backward compatibility.
2. It fundamentally transitions traditional over-the-air broadcasting to an IP-based delivery system.
3. It allows broadcasters to deliver hyper-targeted, dynamically inserted advertisements directly to compatible smart TVs.
Which of the statements given above are correct?
- 1 and 2
- 1 and 3
- 2 and 3
- 1, 2, 3
Explanation: Statement 1 is incorrect. ATSC 3.0 breaks backward compatibility entirely. It explicitly utilizes modern digital IP protocols and mandates advanced high-efficiency codecs like HEVC (H.265) to deliver 4K HDR video over the air.
Consider the following statements concerning the 'Thundering Herd Problem' in OTT events:
1. It occurs when a massive, coordinated surge of millions of users simultaneously attempts to connect to a streaming platform.
2. It frequently triggers cascading network failures, causing origin servers and authentication databases to crash.
3. It is completely eradicated by enforcing a strict SVOD payment model prior to the broadcast.
Which of the statements given above are correct?
- 2 and 3
- 1, 2, 3
- 1 and 2
- 1 and 3
Explanation: Statement 3 is incorrect. The business model (SVOD/AVOD) does not solve technical network physics. Even if everyone has prepaid, millions of simultaneous login requests for a major event will still create a Thundering Herd.
Regarding 'Multicast ABR' (mABR) technology in modern video delivery, consider the following statements:
1. It forces all end-user devices in a geographic region to consume content at the exact same, lowest-common bitrate.
2. It combines the bandwidth-saving efficiency of IP multicasting with the device compatibility of Adaptive Bitrate streaming.
3. It relies on a local gateway inside the home network to convert the multicast stream back into unicast segments.
Which of the statements given above are correct?
- 1 and 2
- 1 and 3
- 2 and 3
- 1, 2, 3
Explanation: Statement 1 is incorrect. mABR still utilizes Adaptive Bitrate (ABR) principles. It sends multiple bitrate profiles via multicast, allowing the home gateway or device to choose the best quality profile for its specific screen.
Regarding 'Header Enrichment' utilized in Telco-OTT partnerships, consider the following statements:
1. It allows the telecom operator to natively bypass the OTT platform's proprietary DRM encryption.
2. The telecom operator injects encrypted user identification data into the HTTP headers of the mobile traffic.
3. It facilitates seamless, auto-login experiences for users without requiring them to manually enter SMS OTPs.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 1, 2, 3
- 2 and 3
Explanation: Statement 1 is incorrect. Header enrichment is an authentication integration tool (e.g., automatically logging in a telecom user to a partnered OTT app). It does not grant the Telco the ability to break or bypass studio DRM encryption.
With reference to 'VMAF' (Video Multimethod Assessment Fusion), consider the following statements:
1. It is an objective full-reference video quality metric developed primarily by Netflix and the academic community.
2. It universally standardizes the physical hardware required for decoding high-definition video on mobile devices.
3. It predicts subjective video quality by simulating the human visual system's perception of artifacts and motion.
Which of the statements given above are correct?
- 2 and 3
- 1, 2, 3
- 1 and 2
- 1 and 3
Explanation: Statement 2 is incorrect. VMAF is purely a software-based algorithm used to assess and score video quality (often to optimize encoding). It does not dictate or standardize physical decoding hardware.
With reference to 'Peer-to-Peer' (P2P) CDN technologies in streaming, consider the following statements:
1. It attempts to reduce central server bandwidth costs by allowing end-users to share video chunks with each other.
2. It utilizes WebRTC data channels to facilitate direct, secure connections between standard web browsers.
3. It legally mandates that users surrender complete administrative control of their personal computers to the OTT platform.
Which of the statements given above are correct?
- 1 and 2
- 1, 2, 3
- 1 and 3
- 2 and 3
Explanation: Statement 3 is incorrect. P2P CDN technologies operate securely within the strict browser sandbox using native protocols like WebRTC. They absolutely do not grant administrative OS control to the OTT provider.
With reference to 'SVOD Churn Management', consider the following statements:
1. 'Voluntary Churn' refers to subscribers actively choosing to cancel their subscription, often due to content fatigue.
2. OTT platforms legally mandate viewers to maintain their subscriptions for a minimum of ten years to mitigate churn.
3. 'Involuntary Churn' frequently occurs due to technical billing failures, such as expired credit cards or failed direct debits.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 1, 2, 3
- 2 and 3
Explanation: Statement 2 is incorrect. A defining feature of modern SVOD OTT platforms (unlike traditional cable TV contracts) is that they operate on rolling, no-commitment monthly contracts, allowing users to cancel at any time.
Consider the following statements about 'Origin Shielding' in Content Delivery Network (CDN) architectures:
1. It introduces an intermediate caching layer between the geographically dispersed edge servers and the central origin server.
2. It physically encrypts the user's local hard drive to prevent the unauthorized download of cached DRM content.
3. It protects the core origin server from being overwhelmed by simultaneous requests during highly anticipated live events.
Which of the statements given above are correct?
- 2 and 3
- 1 and 2
- 1 and 3
- 1, 2, 3
Explanation: Statement 2 is incorrect. Origin Shielding is a network architecture strategy to protect the central server's capacity by consolidating edge requests. It has nothing to do with encrypting local user hard drives.
With reference to the 'MPEG Transport Stream' (MPEG-TS), consider the following statements:
1. It is a standard digital container format utilized for multiplexing synchronized video, audio, and program data.
2. It was originally engineered for highly reliable digital television broadcasting, such as DVB and ATSC systems.
3. It serves as the foundational container utilized historically in Apple's HTTP Live Streaming (HLS) protocol.
Which of the statements given above are correct?
- 1 and 3
- 2 and 3
- 1 and 2
- 1, 2, 3
Explanation: All statements are correct. MPEG-TS is a resilient digital container originally built for unstable broadcast environments, which made it perfectly suited for early internet delivery protocols like HLS before fragmented MP4 (fMP4) emerged.
Regarding 'Token Authentication' in OTT video security, consider the following statements:
1. It generates a unique, time-limited cryptographic URL required for the client player to access a video segment.
2. It successfully prevents unauthorized users from indiscriminately sharing direct video links on public forums or pirate sites.
3. It functions as an access control security measure functioning alongside separate Digital Rights Management layers.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 2
- 2 and 3
- 1 and 3
Explanation: All statements are correct. Token authentication ensures only authorized users can request the file from the CDN. Even if a URL is shared, it quickly expires, preventing massive unauthorized leeching of server bandwidth.
Consider the following statements concerning the 'Real-Time Messaging Protocol' (RTMP):
1. It was originally developed by Macromedia specifically to stream low-latency audio and video to the Flash Player.
2. It remains heavily utilized today for the 'First Mile' contribution ingest from a live broadcaster to the streaming server.
3. It is natively supported by modern iOS devices and has entirely replaced HLS for last-mile delivery to mobile phones.
Which of the statements given above are correct?
- 1 and 3
- 1, 2, 3
- 2 and 3
- 1 and 2
Explanation: Statement 3 is incorrect. RTMP is virtually dead for 'last-mile' delivery to end-users because Apple iOS abandoned Flash and RTMP entirely, forcing the industry to adopt HTTP-based protocols like HLS.
Consider the following statements about 'Client-Side Ad Insertion' (CSAI) in AVOD platforms:
1. It permanently modifies the main video file hosted on the origin server by physically stitching the ads into the master file.
2. It is highly vulnerable to ad-blocking browser extensions, which can easily detect and block the external ad server calls.
3. The client video player independently pauses the main content and requests advertisements from a third-party ad server.
Which of the statements given above are correct?
- 1 and 2
- 1 and 3
- 2 and 3
- 1, 2, 3
Explanation: Statement 1 is incorrect. CSAI occurs locally on the user's device (the client). It does not modify or stitch anything on the origin server; it merely switches the player's focus between the content stream and the ad stream.
Regarding 'Header Enrichment' utilized in Telco-OTT partnerships, consider the following statements:
1. It allows the telecom operator to natively bypass the OTT platform's proprietary DRM encryption.
2. The telecom operator injects encrypted user identification data into the HTTP headers of the mobile traffic.
3. It facilitates seamless, auto-login experiences for users without requiring them to manually enter SMS OTPs.
Which of the statements given above are correct?
- 2 and 3
- 1 and 3
- 1, 2, 3
- 1 and 2
Explanation: Statement 1 is incorrect. Header enrichment is an authentication integration tool (e.g., automatically logging in a telecom user to a partnered OTT app). It does not grant the Telco the ability to break or bypass studio DRM encryption.
With reference to the 'SCTE-35' standard in video broadcasting and OTT, consider the following statements:
1. It provides digital signaling cues embedded within the video stream to indicate exactly where an advertisement can be inserted.
2. It is fundamentally critical for the seamless execution of Server-Side Ad Insertion (SSAI) on linear live streaming channels.
3. It remains a heavily adopted industry standard in both traditional cable broadcasting and modern IP workflows.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 3
- 2 and 3
- 1 and 2
Explanation: All statements are correct. SCTE-35 is the definitive global standard used to insert digital markers into live feeds, allowing downstream ad servers to know exactly when to trigger commercial breaks.
Regarding the metric of 'CDN Cache Hit Ratio', consider the following statements:
1. An absolute 0% cache hit ratio indicates optimal network performance during global live streaming events.
2. It represents the percentage of user requests that are successfully served directly from a CDN edge cache.
3. A higher cache hit ratio significantly reduces latency for the end-user and lowers egress bandwidth costs.
Which of the statements given above are correct?
- 1 and 2
- 1, 2, 3
- 2 and 3
- 1 and 3
Explanation: Statement 1 is incorrect. A 0% cache hit ratio means every single request is bypassing the edge and slamming the central origin server. In a massive live streaming event, this would immediately cause catastrophic server collapse.
Regarding 'Forensic Watermarking' in premium video streaming, consider the following statements:
1. It embeds an invisible, unique cryptographic identifier directly into the video frames delivered to each specific user.
2. It requires the viewer to physically connect a smart card to their television set for continuous decryption.
3. It is primarily utilized by studios to trace leaked or pirated content back to the specific compromised user account.
Which of the statements given above are correct?
- 1 and 2
- 2 and 3
- 1 and 3
- 1, 2, 3
Explanation: Statement 2 is incorrect. Forensic watermarking is a digital software technique applied during the encoding or CDN edge delivery phase. It does not require physical smart cards or external decryption hardware from the user.
Regarding 'Playout Automation' systems in OTT Linear/FAST channels, consider the following statements:
1. They are utilized to automatically sequence and schedule Video on Demand (VOD) assets into a continuous 24/7 live linear stream.
2. They fundamentally require the use of analog video cassette tapes for master archival storage and retrieval.
3. They allow operators to dynamically insert SCTE-35 markers for precise downstream commercial ad-breaks.
Which of the statements given above are correct?
- 1, 2, 3
- 2 and 3
- 1 and 2
- 1 and 3
Explanation: Statement 2 is incorrect. Modern cloud playout automation is entirely digital and IP-based. Master assets are stored on cloud storage buckets (like AWS S3), having completely abandoned analog tape cassettes decades ago.
Regarding 'Video Bit Depth' in streaming, consider the following statements:
1. It refers to the number of bits utilized to represent the color of a single pixel in a video frame.
2. High Dynamic Range (HDR) content fundamentally requires a 10-bit or 12-bit depth to achieve maximum luminescence.
3. Standard definition video typically utilizes a 2-bit depth, allowing for exactly four distinct colors to be displayed.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 1, 2, 3
- 2 and 3
Explanation: Statement 3 is incorrect. Standard definition video utilizes 8-bit depth, which allows for approximately 16.7 million distinct colors. A 2-bit depth would render an unwatchable image containing only four colors.
With reference to the 'VVC' (Versatile Video Coding / H.266) standard, consider the following statements:
1. It is designed to offer approximately double the compression efficiency of HEVC (H.265) for equivalent video quality.
2. It is a completely open-source project managed exclusively by the Mozilla Foundation to eliminate patent royalties.
3. It is specifically optimized to handle emerging complex media formats like 8K resolution and 360-degree omnidirectional video.
Which of the statements given above are correct?
- 2 and 3
- 1 and 3
- 1, 2, 3
- 1 and 2
Explanation: Statement 2 is incorrect. Like its predecessors (H.264 and HEVC), VVC/H.266 was developed by the Joint Video Experts Team (JVET) and is heavily encumbered by complex commercial patent pools, not open-source.
Regarding 'Multicast ABR' (mABR) technology in modern video delivery, consider the following statements:
1. It forces all end-user devices in a geographic region to consume content at the exact same, lowest-common bitrate.
2. It combines the bandwidth-saving efficiency of IP multicasting with the device compatibility of Adaptive Bitrate streaming.
3. It relies on a local gateway inside the home network to convert the multicast stream back into unicast segments.
Which of the statements given above are correct?
- 2 and 3
- 1 and 3
- 1 and 2
- 1, 2, 3
Explanation: Statement 1 is incorrect. mABR still utilizes Adaptive Bitrate (ABR) principles. It sends multiple bitrate profiles via multicast, allowing the home gateway or device to choose the best quality profile for its specific screen.
With reference to 'SVOD Churn Management', consider the following statements:
1. 'Voluntary Churn' refers to subscribers actively choosing to cancel their subscription, often due to content fatigue.
2. OTT platforms legally mandate viewers to maintain their subscriptions for a minimum of ten years to mitigate churn.
3. 'Involuntary Churn' frequently occurs due to technical billing failures, such as expired credit cards or failed direct debits.
Which of the statements given above are correct?
- 2 and 3
- 1 and 3
- 1, 2, 3
- 1 and 2
Explanation: Statement 2 is incorrect. A defining feature of modern SVOD OTT platforms (unlike traditional cable TV contracts) is that they operate on rolling, no-commitment monthly contracts, allowing users to cancel at any time.
Regarding the concept of 'Zero-Rating' in telecom and OTT partnerships, consider the following statements:
1. It completely eliminates the physical necessity for the OTT platform to utilize a Content Delivery Network (CDN).
2. It occurs when a mobile network operator does not charge data usage against a subscriber's monthly cap for a specific OTT app.
3. It is often heavily scrutinized by regulatory authorities as a potential violation of strict Net Neutrality principles.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 2
- 2 and 3
- 1 and 3
Explanation: Statement 1 is incorrect. Zero-rating is purely a billing and marketing agreement between the ISP and the OTT. The OTT platform still requires massive physical CDN infrastructure to deliver the actual video data.
Regarding 'Video Bit Depth' in streaming, consider the following statements:
1. It refers to the number of bits utilized to represent the color of a single pixel in a video frame.
2. High Dynamic Range (HDR) content fundamentally requires a 10-bit or 12-bit depth to achieve maximum luminescence.
3. Standard definition video typically utilizes a 2-bit depth, allowing for exactly four distinct colors to be displayed.
Which of the statements given above are correct?
- 1 and 2
- 1 and 3
- 2 and 3
- 1, 2, 3
Explanation: Statement 3 is incorrect. Standard definition video utilizes 8-bit depth, which allows for approximately 16.7 million distinct colors. A 2-bit depth would render an unwatchable image containing only four colors.
Consider the following statements about 'Origin Shielding' in Content Delivery Network (CDN) architectures:
1. It introduces an intermediate caching layer between the geographically dispersed edge servers and the central origin server.
2. It physically encrypts the user's local hard drive to prevent the unauthorized download of cached DRM content.
3. It protects the core origin server from being overwhelmed by simultaneous requests during highly anticipated live events.
Which of the statements given above are correct?
- 2 and 3
- 1, 2, 3
- 1 and 2
- 1 and 3
Explanation: Statement 2 is incorrect. Origin Shielding is a network architecture strategy to protect the central server's capacity by consolidating edge requests. It has nothing to do with encrypting local user hard drives.
With reference to the 'SCTE-35' standard in video broadcasting and OTT, consider the following statements:
1. It provides digital signaling cues embedded within the video stream to indicate exactly where an advertisement can be inserted.
2. It is fundamentally critical for the seamless execution of Server-Side Ad Insertion (SSAI) on linear live streaming channels.
3. It remains a heavily adopted industry standard in both traditional cable broadcasting and modern IP workflows.
Which of the statements given above are correct?
- 2 and 3
- 1 and 2
- 1 and 3
- 1, 2, 3
Explanation: All statements are correct. SCTE-35 is the definitive global standard used to insert digital markers into live feeds, allowing downstream ad servers to know exactly when to trigger commercial breaks.
With reference to the 'VP9' video codec, consider the following statements:
1. It was developed by Google primarily as a highly efficient, open-source, and royalty-free alternative to HEVC (H.265).
2. It is heavily utilized by YouTube to stream high-resolution 4K content to compatible web and mobile devices.
3. It is strictly incompatible with the WebM container format utilized natively by HTML5 web browsers.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 2
- 2 and 3
- 1 and 3
Explanation: Statement 3 is incorrect. VP9 is intimately linked with the WebM container format. Together, they are natively supported by almost all modern HTML5 browsers for seamless, plugin-free video playback.
Consider the following statements concerning the 'Real-Time Messaging Protocol' (RTMP):
1. It was originally developed by Macromedia specifically to stream low-latency audio and video to the Flash Player.
2. It remains heavily utilized today for the 'First Mile' contribution ingest from a live broadcaster to the streaming server.
3. It is natively supported by modern iOS devices and has entirely replaced HLS for last-mile delivery to mobile phones.
Which of the statements given above are correct?
- 1 and 3
- 2 and 3
- 1, 2, 3
- 1 and 2
Explanation: Statement 3 is incorrect. RTMP is virtually dead for 'last-mile' delivery to end-users because Apple iOS abandoned Flash and RTMP entirely, forcing the industry to adopt HTTP-based protocols like HLS.
With reference to the 'MPEG Transport Stream' (MPEG-TS), consider the following statements:
1. It is a standard digital container format utilized for multiplexing synchronized video, audio, and program data.
2. It was originally engineered for highly reliable digital television broadcasting, such as DVB and ATSC systems.
3. It serves as the foundational container utilized historically in Apple's HTTP Live Streaming (HLS) protocol.
Which of the statements given above are correct?
- 1 and 2
- 1 and 3
- 2 and 3
- 1, 2, 3
Explanation: All statements are correct. MPEG-TS is a resilient digital container originally built for unstable broadcast environments, which made it perfectly suited for early internet delivery protocols like HLS before fragmented MP4 (fMP4) emerged.
Consider the following statements regarding the 'Secure Reliable Transport' (SRT) protocol:
1. It is an open-source video transport protocol that optimizes streaming performance across unpredictable networks.
2. It employs advanced encryption and error recovery mechanisms to maintain high-quality streams.
3. It intrinsically utilizes the TCP protocol to guarantee the delivery of every video packet without loss.
Which of the statements given above are correct?
- 1, 2, 3
- 2 and 3
- 1 and 2
- 1 and 3
Explanation: Statement 3 is incorrect. SRT is built on top of UDP (User Datagram Protocol), not TCP. It uses UDP to maintain ultra-low latency while adding its own mathematical layer of error recovery to handle packet loss.
Regarding the difference between 'Quality of Service' (QoS) and 'Quality of Experience' (QoE) in OTT, consider the following statements:
1. QoS measures objective network parameters like packet loss, jitter, and available bandwidth throughput.
2. QoE measures subjective user-centric metrics such as video startup time, buffering rebuffers, and visual fidelity.
3. An ISP can guarantee absolute QoE for an OTT provider without needing to monitor any client-side player analytics.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 3
- 1 and 2
- 2 and 3
Explanation: Statement 3 is incorrect. Because OTT travels over the unmanaged internet, an ISP cannot guarantee QoE. Furthermore, measuring true QoE intrinsically requires analyzing data directly from the client's video player.
Regarding 'Playout Automation' systems in OTT Linear/FAST channels, consider the following statements:
1. They are utilized to automatically sequence and schedule Video on Demand (VOD) assets into a continuous 24/7 live linear stream.
2. They fundamentally require the use of analog video cassette tapes for master archival storage and retrieval.
3. They allow operators to dynamically insert SCTE-35 markers for precise downstream commercial ad-breaks.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 3
- 2 and 3
- 1 and 2
Explanation: Statement 2 is incorrect. Modern cloud playout automation is entirely digital and IP-based. Master assets are stored on cloud storage buckets (like AWS S3), having completely abandoned analog tape cassettes decades ago.
Consider the following statements regarding the 'Secure Reliable Transport' (SRT) protocol:
1. It is an open-source video transport protocol that optimizes streaming performance across unpredictable networks.
2. It employs advanced encryption and error recovery mechanisms to maintain high-quality streams.
3. It intrinsically utilizes the TCP protocol to guarantee the delivery of every video packet without loss.
Which of the statements given above are correct?
- 1, 2, 3
- 2 and 3
- 1 and 2
- 1 and 3
Explanation: Statement 3 is incorrect. SRT is built on top of UDP (User Datagram Protocol), not TCP. It uses UDP to maintain ultra-low latency while adding its own mathematical layer of error recovery to handle packet loss.
With reference to the convergence standard 'ATSC 3.0' (NextGen TV), consider the following statements:
1. It strictly prohibits the use of HEVC video compression, mandating older legacy analog formats for backward compatibility.
2. It fundamentally transitions traditional over-the-air broadcasting to an IP-based delivery system.
3. It allows broadcasters to deliver hyper-targeted, dynamically inserted advertisements directly to compatible smart TVs.
Which of the statements given above are correct?
- 1, 2, 3
- 2 and 3
- 1 and 3
- 1 and 2
Explanation: Statement 1 is incorrect. ATSC 3.0 breaks backward compatibility entirely. It explicitly utilizes modern digital IP protocols and mandates advanced high-efficiency codecs like HEVC (H.265) to deliver 4K HDR video over the air.
Consider the following statements about 'Anycast Routing' utilized by Global CDNs:
1. It assigns the exact same IP address to multiple CDN edge servers located in different geographic regions globally.
2. It significantly increases the time it takes to resolve DNS queries by forcing all global traffic to a single physical router.
3. The network's Border Gateway Protocol (BGP) automatically routes a user's request to the topologically closest server sharing that IP.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 2
- 2 and 3
- 1 and 3
Explanation: Statement 2 is incorrect. Anycast achieves the exact opposite. By directing traffic to the nearest localized server sharing the Anycast IP, it dramatically decreases latency and prevents single routers from being overwhelmed.
With reference to 'VMAF' (Video Multimethod Assessment Fusion), consider the following statements:
1. It is an objective full-reference video quality metric developed primarily by Netflix and the academic community.
2. It universally standardizes the physical hardware required for decoding high-definition video on mobile devices.
3. It predicts subjective video quality by simulating the human visual system's perception of artifacts and motion.
Which of the statements given above are correct?
- 1 and 3
- 2 and 3
- 1, 2, 3
- 1 and 2
Explanation: Statement 2 is incorrect. VMAF is purely a software-based algorithm used to assess and score video quality (often to optimize encoding). It does not dictate or standardize physical decoding hardware.
Regarding 'Concurrency Limits' enforced by OTT platforms, consider the following statements:
1. They restrict the maximum number of devices that can stream content simultaneously from a single user account.
2. They are enforced through the OTT platform's backend subscriber management and DRM token systems.
3. They are primarily utilized as a business strategy to curb rampant password sharing among non-subscribers.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 3
- 2 and 3
- 1 and 2
Explanation: All statements are correct. Concurrency limits are a critical revenue-protection mechanism. By limiting simultaneous streams via backend software, providers discourage users from sharing one paid account with dozens of friends.
Consider the following statements concerning the 'Thundering Herd Problem' in OTT events:
1. It occurs when a massive, coordinated surge of millions of users simultaneously attempts to connect to a streaming platform.
2. It frequently triggers cascading network failures, causing origin servers and authentication databases to crash.
3. It is completely eradicated by enforcing a strict SVOD payment model prior to the broadcast.
Which of the statements given above are correct?
- 1 and 3
- 2 and 3
- 1, 2, 3
- 1 and 2
Explanation: Statement 3 is incorrect. The business model (SVOD/AVOD) does not solve technical network physics. Even if everyone has prepaid, millions of simultaneous login requests for a major event will still create a Thundering Herd.
Consider the following statements concerning the 'Trusted Execution Environment' (TEE) in DRM:
1. It relies exclusively on open-source, community-audited software running on standard Linux kernels.
2. It is a highly secure, isolated area within the main processor of a smart device dedicated to sensitive operations.
3. It ensures that premium, hardware-level DRM video decryption occurs without being accessible to the main operating system.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 3
- 2 and 3
- 1 and 2
Explanation: Statement 1 is incorrect. A TEE operates precisely by being physically and cryptographically isolated from the main open OS (like Linux/Android) to prevent malware or rooted devices from capturing decrypted frames.
With reference to the 'DRM License Server', consider the following statements:
1. It is a highly secure backend service that generates and distributes cryptographic decryption keys to authorized client devices.
2. It directly hosts and streams the heavy binary video files (terabytes of data) to the end-users.
3. It evaluates business rules, such as geographic location or subscription tier, before granting the playback key.
Which of the statements given above are correct?
- 2 and 3
- 1 and 2
- 1 and 3
- 1, 2, 3
Explanation: Statement 2 is incorrect. The DRM license server only handles the extremely lightweight, encrypted 'keys' and authorization tokens. The massive binary video files are hosted and delivered completely separately by the CDN.
Regarding 'Forensic Watermarking' in premium video streaming, consider the following statements:
1. It embeds an invisible, unique cryptographic identifier directly into the video frames delivered to each specific user.
2. It requires the viewer to physically connect a smart card to their television set for continuous decryption.
3. It is primarily utilized by studios to trace leaked or pirated content back to the specific compromised user account.
Which of the statements given above are correct?
- 1 and 3
- 1, 2, 3
- 1 and 2
- 2 and 3
Explanation: Statement 2 is incorrect. Forensic watermarking is a digital software technique applied during the encoding or CDN edge delivery phase. It does not require physical smart cards or external decryption hardware from the user.
Consider the following statements about 'Multiplexing' in video delivery architectures:
1. It is the complex process of interleaving separate elementary streams into a single cohesive transport stream.
2. It allows a client video player to receive and seamlessly synchronize the playback of different media components.
3. It functions purely as a digital data organization process utilized in networking and broadcasting.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 2 and 3
- 1, 2, 3
Explanation: All statements are correct. Multiplexing takes raw video frames, audio tracks, and subtitle data and mathematically interleaves them so the receiving player can extract and sync them flawlessly during playback.
With reference to 'Object-Based Audio' (such as Dolby Atmos) in OTT streaming, consider the following statements:
1. It fundamentally requires analog copper wiring to transmit the uncompressed sound objects to modern television sets.
2. It treats individual sound elements as independent 3D objects rather than mixing them into fixed, rigid channels.
3. The client device's receiver dynamically renders the audio objects in real-time based on the specific number of speakers.
Which of the statements given above are correct?
- 1 and 3
- 1, 2, 3
- 1 and 2
- 2 and 3
Explanation: Statement 1 is incorrect. Object-based audio is delivered digitally over IP networks (via codecs like E-AC-3) and requires high-bandwidth digital HDMI connections (like eARC), not legacy analog copper wiring.
Consider the following statements about 'WebVTT' (Web Video Text Tracks):
1. It is a standardized W3C format specifically designed for displaying timed text tracks, such as subtitles, in HTML5 video.
2. It allows for advanced text styling, positioning, and alignment natively within the browser player.
3. It operates by delivering separate, lightweight side-car text files alongside the primary video chunks.
Which of the statements given above are correct?
- 1 and 3
- 2 and 3
- 1 and 2
- 1, 2, 3
Explanation: All statements are correct. WebVTT replaced 'burned-in' subtitles by allowing players to dynamically render text files over the video, making it accessible, searchable, and easy to translate without re-encoding the video.
With reference to 'Peer-to-Peer' (P2P) CDN technologies in streaming, consider the following statements:
1. It attempts to reduce central server bandwidth costs by allowing end-users to share video chunks with each other.
2. It utilizes WebRTC data channels to facilitate direct, secure connections between standard web browsers.
3. It legally mandates that users surrender complete administrative control of their personal computers to the OTT platform.
Which of the statements given above are correct?
- 1 and 3
- 1, 2, 3
- 1 and 2
- 2 and 3
Explanation: Statement 3 is incorrect. P2P CDN technologies operate securely within the strict browser sandbox using native protocols like WebRTC. They absolutely do not grant administrative OS control to the OTT provider.
Regarding 'Token Authentication' in OTT video security, consider the following statements:
1. It generates a unique, time-limited cryptographic URL required for the client player to access a video segment.
2. It successfully prevents unauthorized users from indiscriminately sharing direct video links on public forums or pirate sites.
3. It functions as an access control security measure functioning alongside separate Digital Rights Management layers.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 2 and 3
- 1, 2, 3
Explanation: All statements are correct. Token authentication ensures only authorized users can request the file from the CDN. Even if a URL is shared, it quickly expires, preventing massive unauthorized leeching of server bandwidth.
Regarding the metric of 'CDN Cache Hit Ratio', consider the following statements:
1. An absolute 0% cache hit ratio indicates optimal network performance during global live streaming events.
2. It represents the percentage of user requests that are successfully served directly from a CDN edge cache.
3. A higher cache hit ratio significantly reduces latency for the end-user and lowers egress bandwidth costs.
Which of the statements given above are correct?
- 1 and 2
- 1, 2, 3
- 2 and 3
- 1 and 3
Explanation: Statement 1 is incorrect. A 0% cache hit ratio means every single request is bypassing the edge and slamming the central origin server. In a massive live streaming event, this would immediately cause catastrophic server collapse.
Consider the following statements about 'Multiplexing' in video delivery architectures:
1. It is the complex process of interleaving separate elementary streams into a single cohesive transport stream.
2. It allows a client video player to receive and seamlessly synchronize the playback of different media components.
3. It functions purely as a digital data organization process utilized in networking and broadcasting.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 2 and 3
- 1, 2, 3
Explanation: All statements are correct. Multiplexing takes raw video frames, audio tracks, and subtitle data and mathematically interleaves them so the receiving player can extract and sync them flawlessly during playback.
Regarding the difference between 'Quality of Service' (QoS) and 'Quality of Experience' (QoE) in OTT, consider the following statements:
1. QoS measures objective network parameters like packet loss, jitter, and available bandwidth throughput.
2. QoE measures subjective user-centric metrics such as video startup time, buffering rebuffers, and visual fidelity.
3. An ISP can guarantee absolute QoE for an OTT provider without needing to monitor any client-side player analytics.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 1, 2, 3
- 2 and 3
Explanation: Statement 3 is incorrect. Because OTT travels over the unmanaged internet, an ISP cannot guarantee QoE. Furthermore, measuring true QoE intrinsically requires analyzing data directly from the client's video player.
Regarding the concept of 'Zero-Rating' in telecom and OTT partnerships, consider the following statements:
1. It completely eliminates the physical necessity for the OTT platform to utilize a Content Delivery Network (CDN).
2. It occurs when a mobile network operator does not charge data usage against a subscriber's monthly cap for a specific OTT app.
3. It is often heavily scrutinized by regulatory authorities as a potential violation of strict Net Neutrality principles.
Which of the statements given above are correct?
- 1, 2, 3
- 2 and 3
- 1 and 3
- 1 and 2
Explanation: Statement 1 is incorrect. Zero-rating is purely a billing and marketing agreement between the ISP and the OTT. The OTT platform still requires massive physical CDN infrastructure to deliver the actual video data.
Consider the following statements concerning the 'Trusted Execution Environment' (TEE) in DRM:
1. It relies exclusively on open-source, community-audited software running on standard Linux kernels.
2. It is a highly secure, isolated area within the main processor of a smart device dedicated to sensitive operations.
3. It ensures that premium, hardware-level DRM video decryption occurs without being accessible to the main operating system.
Which of the statements given above are correct?
- 1, 2, 3
- 1 and 2
- 1 and 3
- 2 and 3
Explanation: Statement 1 is incorrect. A TEE operates precisely by being physically and cryptographically isolated from the main open OS (like Linux/Android) to prevent malware or rooted devices from capturing decrypted frames.
With reference to the 'VVC' (Versatile Video Coding / H.266) standard, consider the following statements:
1. It is designed to offer approximately double the compression efficiency of HEVC (H.265) for equivalent video quality.
2. It is a completely open-source project managed exclusively by the Mozilla Foundation to eliminate patent royalties.
3. It is specifically optimized to handle emerging complex media formats like 8K resolution and 360-degree omnidirectional video.
Which of the statements given above are correct?
- 2 and 3
- 1 and 2
- 1 and 3
- 1, 2, 3
Explanation: Statement 2 is incorrect. Like its predecessors (H.264 and HEVC), VVC/H.266 was developed by the Joint Video Experts Team (JVET) and is heavily encumbered by complex commercial patent pools, not open-source.
Consider the following statements about 'Anycast Routing' utilized by Global CDNs:
1. It assigns the exact same IP address to multiple CDN edge servers located in different geographic regions globally.
2. It significantly increases the time it takes to resolve DNS queries by forcing all global traffic to a single physical router.
3. The network's Border Gateway Protocol (BGP) automatically routes a user's request to the topologically closest server sharing that IP.
Which of the statements given above are correct?
- 2 and 3
- 1 and 2
- 1 and 3
- 1, 2, 3
Explanation: Statement 2 is incorrect. Anycast achieves the exact opposite. By directing traffic to the nearest localized server sharing the Anycast IP, it dramatically decreases latency and prevents single routers from being overwhelmed.
With reference to 'Object-Based Audio' (such as Dolby Atmos) in OTT streaming, consider the following statements:
1. It fundamentally requires analog copper wiring to transmit the uncompressed sound objects to modern television sets.
2. It treats individual sound elements as independent 3D objects rather than mixing them into fixed, rigid channels.
3. The client device's receiver dynamically renders the audio objects in real-time based on the specific number of speakers.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 2 and 3
- 1, 2, 3
Explanation: Statement 1 is incorrect. Object-based audio is delivered digitally over IP networks (via codecs like E-AC-3) and requires high-bandwidth digital HDMI connections (like eARC), not legacy analog copper wiring.
Consider the following statements concerning 'Per-Title Encoding' utilized by global OTT platforms:
1. It dynamically customizes the encoding bitrate ladder for every individual video asset based on its visual complexity.
2. It significantly reduces CDN storage and bandwidth costs compared to rigid, one-size-fits-all encoding profiles.
3. It maximizes the perceptual visual quality for the viewer by assigning more data to complex action sequences.
Which of the statements given above are correct?
- 2 and 3
- 1 and 3
- 1 and 2
- 1, 2, 3
Explanation: All statements are correct. Per-title encoding abandons static rules, optimizing each file individually. An action movie gets a higher bitrate ladder than a simple 2D animated cartoon, saving bandwidth while preserving quality.
Consider the following statements concerning 'Per-Title Encoding' utilized by global OTT platforms:
1. It dynamically customizes the encoding bitrate ladder for every individual video asset based on its visual complexity.
2. It significantly reduces CDN storage and bandwidth costs compared to rigid, one-size-fits-all encoding profiles.
3. It maximizes the perceptual visual quality for the viewer by assigning more data to complex action sequences.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 1, 2, 3
- 2 and 3
Explanation: All statements are correct. Per-title encoding abandons static rules, optimizing each file individually. An action movie gets a higher bitrate ladder than a simple 2D animated cartoon, saving bandwidth while preserving quality.
Consider the following statements about 'WebVTT' (Web Video Text Tracks):
1. It is a standardized W3C format specifically designed for displaying timed text tracks, such as subtitles, in HTML5 video.
2. It allows for advanced text styling, positioning, and alignment natively within the browser player.
3. It operates by delivering separate, lightweight side-car text files alongside the primary video chunks.
Which of the statements given above are correct?
- 1 and 2
- 1 and 3
- 2 and 3
- 1, 2, 3
Explanation: All statements are correct. WebVTT replaced 'burned-in' subtitles by allowing players to dynamically render text files over the video, making it accessible, searchable, and easy to translate without re-encoding the video.
With reference to the 'DRM License Server', consider the following statements:
1. It is a highly secure backend service that generates and distributes cryptographic decryption keys to authorized client devices.
2. It directly hosts and streams the heavy binary video files (terabytes of data) to the end-users.
3. It evaluates business rules, such as geographic location or subscription tier, before granting the playback key.
Which of the statements given above are correct?
- 1 and 3
- 1 and 2
- 1, 2, 3
- 2 and 3
Explanation: Statement 2 is incorrect. The DRM license server only handles the extremely lightweight, encrypted 'keys' and authorization tokens. The massive binary video files are hosted and delivered completely separately by the CDN.
Consider the following statements about 'Client-Side Ad Insertion' (CSAI) in AVOD platforms:
1. It permanently modifies the main video file hosted on the origin server by physically stitching the ads into the master file.
2. It is highly vulnerable to ad-blocking browser extensions, which can easily detect and block the external ad server calls.
3. The client video player independently pauses the main content and requests advertisements from a third-party ad server.
Which of the statements given above are correct?
- 1 and 2
- 1, 2, 3
- 1 and 3
- 2 and 3
Explanation: Statement 1 is incorrect. CSAI occurs locally on the user's device (the client). It does not modify or stitch anything on the origin server; it merely switches the player's focus between the content stream and the ad stream.
With reference to the 'VP9' video codec, consider the following statements:
1. It was developed by Google primarily as a highly efficient, open-source, and royalty-free alternative to HEVC (H.265).
2. It is heavily utilized by YouTube to stream high-resolution 4K content to compatible web and mobile devices.
3. It is strictly incompatible with the WebM container format utilized natively by HTML5 web browsers.
Which of the statements given above are correct?
- 1 and 3
- 2 and 3
- 1, 2, 3
- 1 and 2
Explanation: Statement 3 is incorrect. VP9 is intimately linked with the WebM container format. Together, they are natively supported by almost all modern HTML5 browsers for seamless, plugin-free video playback.