Computer Networks — Test 24

Correct Answer: C. C. Advanced encryption standard and triple data encryption standard
Explanation: Both advanced encryption standard and triple data encryption standard are block cipher techniques and are popularly used in WiMAX and other applications for secure encryption.

Correct Answer: C. C. Both voip and iptv services
Explanation: IPTV can be transmitted over WiMAX, and relies on packet-switching to offer reliable delivery. VoIP can be operated over a WiMax network with no special hardware or software.

Correct Answer: A. A. Subscriber stations
Explanation: Subscriber stations in WiMAX are transceivers (transmitter and receivers). They are used to convert radio signals into digital signals that can be routed to and from communication devices. There is a variety of types of WiMAX subscriber stations like portable PCMCIA cards and fixed stations that provide service to multiple users.

Correct Answer: B. B. Metropolitan area network
Explanation: WiMAX provides Wi-Fi connectivity within the home or business for computers and smartphones. WiMAX network operators typically provide a WiMAX Subscriber Unit to do so. The subscriber unit is used to connect to the metropolitan WiMAX network.

Correct Answer: B. B. 2.4 ghz
Explanation: The 2.4GHz ISM frequency band is used for personal area network technologies such as Bluetooth and hence is not suitable for WiMAX which is mostly used for Metropolitan Area Networks.

Correct Answer: D. D. All of the mentioned
Explanation: RTP stands for Real-time transport protocol and is for delivering audio and video over IP networks. Its applications include streaming media, video teleconference, and television services.

Correct Answer: A. A. Carry the media stream
Explanation: RTP is used to carry the media stream for delivering audio and video over IP networks. Its applications include streaming media, video teleconference, and television services.

Correct Answer: A. A. Media stream
Explanation: RTP provides the facility of jitter media stream through a jitter buffer which works by reconstructing the sequence of packets on the receiving side. Then an even audio / video stream is generated.

Correct Answer: B. B. Rtcp
Explanation: RTCP stands for Real-time Transport Control Protocol and it works with RTP to send control packets to the users of the networks while RTP handles the actual data delivery.

Correct Answer: A. A. Each media stream
Explanation: An RTP session is required to be established for each media stream for delivering audio and video over the IP network. Each session has independent data transmission.