DVEP_Proctor_7-7-20-Failed-74%

docx

School

Rio Salado Community College *

*We aren’t endorsed by this school

Course

Subject

Electrical Engineering

Date

Feb 20, 2024

Type

docx

Pages

Uploaded by SuperMusic12967

Maximizing the efficiency of a single program's bandwidth is the focus of which technology? Variable Bit-Rate Encoding Constant Bit Rate Encoding Statistical Multiplexing Open Loop Multiplexing Which of the following MPEG characterstics would you least likely need to compare between pre and post modulation analysis? Health of the PCR's Transport Stream Bandwidths Referred PIDs Missing Audio Levels Audio levels would not be affected typically in digital video by modulation Closed Captioning and data services embedded in line 21 of the Vertical Blanking Interval are detailed in which of the following standards? ETSI TS 101 154 CEA-608 ITU-R BT.709 ITU-R BT.500 Which of the following most accurately describes the implementation of Quality of Service protections in DOCSIS 1.1 and higher? There are no Quality of Service protections available in DOCSIS. Quality of Service protections are incorporated in the physical layer.

Quality of Service protections are incorporated in the MAC layer. Quality of Service protections are incorporated in the MPEG layer. Which of the following best describes "CMTS forwarding out-of-band data to a digital set-top box." DNCS Control Plane tru2way middleware Proprietary set-top software stack DSG Agent The CMTS acts at the DSG agent forwarding OOB data to the digital DOCSIS set-top gateway. Which of the following is the most appropriate reason for why encoding a high motion sports sequence would be more challenging than encoding primetime news? The increased motion and changing images in the sports footage demand more video frames from the encoder. The complex and fast-paced motion in the sports footage will have large differences in the content from frame to frame, giving the encoder less redundancies to work with. The increased color and motion in the sports sequence means it will have more I-Frames per GOP then the news sequence. The news footage will be lower bitrate then the sports footage, so less strenuos to the encoder. Sports programming, action-adventure films, or any content with moving elements that are highly dynamic from frame to frame present greater challenges for encoders to achieve high compression ratios, while talking heads type programming such as the newscaster seen here is far less challenging to an encoder For Digital Program Insertion, SCTE 30 is the protocol used for which of the following communications? Communications between the video server and the encoder Communications between the encoder and splicer Communications between the edge-modulator and splicer Communications between the video server and splicer

The primary difference between computer data traffic and real-time media data traffic is: Media data traffic needs only intermittent connectivity Media data traffic uses sliding window ARQ Media data traffic requres a delivery receipt. Media data traffic is not re-transmittable Which of the following specifications specifically addresses the combination of these components? Embedded Cable modem, out-of-band directory, digital set-top box. DOCSIS 2.0 tru2way DSG SCTE 18 Which of the following management systems is intended to be used for monitoring a wide range of equipment within the network? Element Management System Network Management System Operations Support System Back Office System In order to pass closed captioning, an encoder will need to transcode which VBI line(s)? 21 Any 20

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

19 and 20 In reference to VOD, trick modes refer to? Upselling customer to a premium package Allowing user to FF or RW VOD titles A VOD Title trailer The free preview window before a user gets charged Which of the following will NOT cause lip-synch problems? Buffer overflows Severe PCR jitter Audio compression settings Packet Loss Which of the following best characterizes Fault Management Monitoring? Fault Management systems are not focused exclusively on the physical layer. Fault Mangement systems will use data obtained from probes and network equipment. Fault Management systems focus on identifying network and service problems in real-time. Fault Management systems look at key metrics for network and service performance. Which of the following CableLabs specifications provides guidance by which assets are transported and the ADS from a content provider to an AMS located at a cable operator? VoD Content Specification 2.0 MD-SP-VOD-CONTENT2.0 ADI 2.0 Specification Asset Inventory Messages MD-SP-ADI2.0-AIM Content Encoding Profile 2.0 specification MD-SP-VOD-CEP2.0 OCAP Specification 1.3.1 Profile OC-SP-OCAP 1.3.1 Which of the following is least likely to be a direct cause for A/V sync issues?

Audio Buffer Underflow Increased difference between PTS values PCR Drift Packet Loss The Splice Information Table is defined in which of the following standards? SCTE 30 SCTE 35 SCTE 130 SCTE 18 In order to pass a local over-the-air digital broadcast into the cable network, what type of signal would be received (modulation and bitrate)? 8 VSB at 38.880 Mb/s 16 VSB at 19.392658 Mb/s 8 VSB at 19.392658 Mb/s 16 QAM at 19.392658 Mb/s Did you know? The over the air (OTA) 8 vestigial sideband (8- VSB) digital video signal is 19.44Mbps. All except which of the following are tools for increasing bandwidh efficiency? Switched Digital Video MPEG4 10GigE DTAs The QAM 64 constellation displayed in Figure DVEP 1 indicates which of the following impairments?

I/Q Gain Error I/Q Phase Error Compression Phase Noise In an MPEG-2 Transport Stream, the Program Association Table (PAT) is assigned which of the following PIDs? 0x0000 0x0001 0x0010 0x0011 MPEG-2 temporal encoding breaks each frame into macroblocks consisting of how many pixels? 4x4 pixels 8x8 Pixels 12x12 Pixels 16x16 Pixels What is the common elementary stream type for MPEG-4 video, often found in the PMT? 0x001B 0x0002 0x0081 0x1FFB When introducing a new service, it is often done by hub or service group for all EXCEPT which of the following reasons? To make sure that the fewest software licenses are used

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

To make sure all the work can get done in the available maintenance window To make sure that customer care doesn't see a big spike in call volume To make sure that the system stays stable as it scales by users Headend or hub trial goals: Usually no impact to subscribers, often prelude to technical trial Does the product perform in the headend or hub the same as in lab tests? Was something missed? Interaction? Stability over time for users as service scales, headends or hubs usually more stable than labs Work can get done in the available maintenance window No spike in call volume seen by customer care In linear analog-to-digital conversion, what would be required to improve the signal-to-noise ratio (S/N) of the recovered baseband signal? Increase the compression clock frequency Increase the encoding rate value Increase the sampling rate Increase the quantization bit value From Encoder to set-top box, digital programs are carried in an MPEG transport stream. For a digital cable system, which of the following most accurately defines the interfaces at which you can connect an MPEG stream analyzer to test the signal? Component video, SDI, ASI, and IP. ASI, IP and baseband feeds post set-top box. RF-VSB, ASI, and RF-QAM. ASI, RF-VSB, RF-QAM, and IP. What is NOT a typical goal of an employee trial? To validate features work as expected To validate customer care documents

To validate provisioning and billing processes To validate pricing of the product Name the layers of the ISO's OSI Reference Model. Application, Presentation, Session, Transport, Network, Data Link, Physical Layers Application, Presentation, Accounting, Transport, Network, Data Link, Physical Layers Display, Presentation, Session, Transport, Network, Data Link, Physical Layers Application, Presentation, Session, Multiplex, Network, Data Link, Physical Layers During an employee trial an application does not do what the user expected. Which of the following is NOT pertinent to recording the problem thoroughly? What the user did after the problem occurred The telephone number called to report the problem The time the incident occurred. What the user did to cause the anomaly Select the three factors that are all important for scaling VOD. Number of titles, bandwidth between edges and subscribers, max number of simultaneous streams Design contention rate, number of low memory settops, max number of simultaneous streams Average number of subs per node, number of hours of caching storage, bandwidth between edges and subscribers Average number of subs per node, design contention rate, number of titles Which of the following is NOT a value of a troubleshooting tips document? It describes steps to take to load a new version of software It helps you find the right place in the manual quickly It describes steps to take to resolve a common problem It helps people quickly identify the place to check when a common type of problem occurs

What is the most likely reason for a problem where the subscriber can only view analog and basic tier, unencrypted channels? Entitlement Management Message has not been changed recently. Entitlement Management Messages are not being sent back upstream. Entitlement Management Messages are not being recognized at the set-top box. Entitlement Management Messages are being received at the set-top box. What is the most practical and reliable way to ensure that the transport stream leaving the headend will be viewable on all MPEG compliant set-top boxes? Use an MPEG analyzer to manually validate all of the transport streams leaving your headend. Use a set-top box and a television monitor to decode the signal. Use multiple set-top boxes to validate outgoing streams. Try to emulate the home environment of your customers using different set-top boxes from different vendors connected to a video screen. Use an MPEG monitor to continually check the metrics described in SCTE 142 for all transport streams leaving your headend. Which of the following is NOT a VOD standard? ISA NGOD SCTE 97 SCTE 135 Which statement is false about the HEVC? Encoding complexities are higher than AVC PU is the basic unit for the transform and quantization processes HEVC introduced tiles to support parallel processing HEVC is not backward compatible with AVC ISO/IEC 23008-2 is the standard for MPEG-H

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

All of the following are considerations in allocating RF spectrum for a new service EXCEPT: Total plant capacity Current lineup Future data services Modulation type Which of the following is the best example of objective video quality evaluation? Equipment is used to quantify impairments in the video frames against pre-defined metrics. Video frames that have been captured after passing through the network are compared to the same frame on the original video source. Packet loss and packet delay are tracked against a preset threshold. Viewers are asked to view the same program displayed on two separate monitors, and score which picture looks better. A device that performs PCR /PTS restamping is ingesting MPEG streams with SCTE 35 messages that must be passed downstream. Which of the following is an appropriate method for handling the PTS values for the programs? The device should reset the pts_adjustment_field to zero. The device should modify the pts_adjustment_field to account for the new PTS values. The device should not make any modifications to the PTS values. The device should decode these programs and splice in baseband. Which of the following standards describes methods for subjective video quality assessment? ETSI TS 101 154 CEA-608 ITU-R BT.709

ITU-R BT.500 Which of the following is NOT a consideration for service group design? Digital controller HD customers New residential development Digital penetration In North America, MPEG-2 requires how many Program Clock References (PCRs) per second? 10 25 37 40 How does a Cable Card interface/interconnect with its Host? DVI ASI HDMI PCMCIA What is the purpose of a trial that is conducted only in a headend? Find out what are the subscribers favorite parts of the new service Find out how many QAMs will be needed to deploy to all subscibers Find out if product behaves the same in the field as in the test labs Find out how well customer care can support the service SCTE-142 categorizes error severities to allow filtering. Which of the following would be an example of a CM error:

No PAT present in transport stream Mismatch between actual PMT PID and PMT PID signaled in PAT PMT cycle time of 400 ms Mismatch between actual video PID and video PID signaled in PMT Which of the following CableLabs specifications defines a profile for the next generation of middleware software? VoD Content Specification 2.0 MD-SP-VOD-CONTENT2.0 VOD Asset Distribution Interface Specification 1.1 MD-SP-ADI1.1 Content Encoding Profile 2.0 specification MD-SP-VOD-CEP2.0 OCAP Specification 1.3.1 Profile OC-SP-OCAP 1.3.1 If a digital service's tuning and decoding metadata tags are incorrect, the receiver may receive the elements, but may also be unable to present them. What is the first step to troubleshoot this problem? Reset the set-top box. Compare the PIDs in the transport stream to those referenced in the PAT and PMT. Check the MPEG-2 transport stream and verify that the PSIP metadata exists and is correct. Try switching the set-top box to and from the secondary audio programming to relocate the metadata. When executing an upgrade or service launch, it is helpful to have a timeline for all EXCEPT one of the following reasons: To make sure that prior steps have been completed before proceeding To tell if you won't get finished in a maintenance window To tell you which equipment you will need to complete the job To make sure everyone knows in what order things have to be done Which of the following is NOT a result of using Switched Digital? Effectively increasing the number of channels to the viewer

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Longer channel change time Support for Picture-In-Picture Additional control metadata flows Which of the following CableLabs specifications defines how ADI compliant movies shall be compressed? VoD Content Specification 2.0 MD-SP-VOD-CONTENT2.0 VOD Asset Distribution Interface Specification 1.1 MD-SP-ADI1.1 VoD Content Encoding Profile 2.0 specification MD-SP-VOD-CEP-2.0 OCAP Specification 1.3.1 Profile OC-SP-OCAP 1.3.1 This standard describes the method of transporting analog Vertical Blanking Interval (VBI) information in compressed digital television bitstreams that use the MPEG-2 Transport Stream format. SCTE 125 SCTE 127 SCTE 128 SCTE 54