0 — Test 332

Correct Answer: D. D. Analog signal is converted to digital signal in DSLam
Explanation: CMTS stands for Cable modem termination system. In cable access analog signal is converted to digital signal by CMTS. In cable internet access, internet is not provided through telephone lines. DSLAM is used by Telecom companies.

Correct Answer: A. A. Aon
Explanation: AON stands for Active optical networks which are essentially switched Ethernets. Each user has his/her own dedicated optical fiber line connecting to the ISP in an AON.

Correct Answer: D. D. Satellite access
Explanation: StarBand was a two-way satellite broadband Internet service available in the U.S. from 2000–2015. It was discontinued from September 30 2015 due to increasing competition from other ISPs.

Correct Answer: D. D. All of the mentioned
Explanation: Home Internet Access is provided by DSL, FTTP, and Cable. FTTP provides the fastest speeds followed by the cable connections and then the DSLs. FTTP is popularly used in modern connections.

Correct Answer: C. C. Optical cable
Explanation: ONT stands for Optical Network Terminal. The ONT connects to the Termination Point (TP) with an optical fibre cable. It translates light signals from the fibre optic line to electric signals that the router can read.

Correct Answer: D. D. The gauge of the twisted-pair line and degree of electrical interference
Explanation: Because DSL is made of twisted wire copper pair, the gauge of twisted pair line i.e. the protection and electrical interference would affect the transmission rate in DSL. Unlike DSL, FTTP is not really affected by these factors.

Correct Answer: C. C. Public key-encryption
Explanation: Pre Shared key can be compromised and either party can be suspected. Likewise KDC or symmetric key can have breach which are undesirable. Public and private key encryption is a known industry standard.

Correct Answer: D. D. It is used to ensure data corruption doesn’t happens
Explanation: Encryption doesn’t have error correction or detection facility thus cannot be used to safeguard from data corruption.

Correct Answer: C. C. Data is logically €?xored’ with previous block

Correct Answer: B. B. Tes