NETW320 Final Review

The _____ method uses more bits during quantization in the area where the signal is rather quiet.

companding

Which of the following is not an SIP-URI?

sip:10.0.01@admin

A video is decoded along a time axis. The play-out of video and audio needs synchronization. Consequently, at multiple places, ____information needs to be stored.

time

IETF ______ is a term used to describe a collection of services that can be used to provide a usable network of devices without the need for manual configuration or outside services.

zeroconf

Which multicast model has the most security issues?

AnySource Multicast (ASM)

Which SIP method terminates a session that is not yet established?

CANCEL

Which of the following is not a data protocol for multimedia conferencing?

H. 225

In the H. 323 family, which protocol negotiates the capabilities, selects codecs, and issues start and end commands for the media?

H. 245

Which of the following is not an advantage of VoLTE?

Less system downtime

Which of the following is a media gateway control protocol?

MGCP

Congestion of a network node happens when the amount of traffic has filled its buffers completely so that packets need to be dropped. Which of the following is not a common measure to avoid congestion?

SMIL Scripting Which of the following is not a valid SIP method? JOIN

Which of the following is not an SIP security and safety threat?

SQL injection

Which of the following is a Microsoft streaming technology?

Smooth Streaming

A CDN, sometimes called a Content Distribution Network, is a collection of geographically dispersed servers implemented to provide high-performance and reliable delivery of content to end users.

True

For black-and-white pictures as well as for newspapers, JPEG is not the first choice. Instead, formats such as Graphic Interchange Format (GIF) or Portable Network Graphics (PNG) achieve better results.

True

High-End Videoconferencing requires less jitter and minimum latency.

True

In the RTP header, the value of the sequence number increments by one for each RTP data packet sent.

True

Most videoconference systems use H.264/H.265 over RTP and SRTP.

True

The Digital Living Network Alliance (DLNA) uses UPnP and other standards to create profiles for devices. Devices get certified and the DLNA standard label is visible to the end customer on home electronics equipment.

True

The Internet Engineering Taskforce (IETF) governs all Internet protocols. Its publications are called "Request for Comments" (RFCs) and carry continuous numbers.

True

Videoconferencing traffic needs QoS not only on the WAN, but also on the LAN.

True

Webcasts are used for lectures, events, and meetings up to multi-thousand viewers. After the live Webcast, the material gets published for a restricted time on a portal.

True

______ adds real-time communication to the browser with a focus on peer-to-peer communication.

WebRTC

Which of the following is not an advantage of the RTP/UDP method of streaming?

Zero packet loss