IBPS IT SO Study material- Computer Networks-Access Networks

IBPS IT SO Study material- Computer Networks

Access Networks

1) Which of this is not a constituent of residential telephone line?
a) A high-speed downstream channel
b) A medium-speed downstream channel
c) A low-speed downstream channel
d) None of the mentioned

Answer: c
Explanation: The third part is ordinary two way telephone channel.

2) In DSL telco provides these services
a) Wired phone access
b) ISP
c) All of the mentioned
d) None of the mentioned

Answer: c
Explanation: The same company which provides phone connection is also its ISP in DSL.

3) The function of DSLAM is
a) Convert analog signals into digital signals
b) Convert digital signals into analog signals
c) Amplify digital signals
d) None of the mentioned

Answer: a
Explanation: The DSLAM located in telco’s Central Office does this function.

4) The following term is not associted with DSL
a) DSLAM
b) CO
c) Splitter
d) CMTS

Answer: d
Explanation: Cable modem termination system is used in cable internet access.

5) HFC contains
a) Fibre cable
b) Coaxial cable
c) Both of the mentioned
d) None of the mentioned

Answer: c
Explanation: None.

6) Choose the statement which is not applicable for cable internet access
a) It is a shared broadcast medium
b) It includes HFCs
c) Cable modem connects home PC to Ethernet port
d) Analog signal is converted to digital signal in DSLAM

Answer: d
Explanation: In cable access analog signal is converted to digital signal by CMTS.

7) Among the optical-distribution architectures that is essentially switched ehternet is
a) AON
b) PON
c) NON
d) None of the mentioned

Answer:a
Explanation: Active optical networks are essentially switched ehternets.

8) StarBand provides
a) FTTH internet access
b) Cable access
c) Telephone access
d) Satellite access

Answer: d
Explanation: None.

9) Home Access is provided by
a) DSL
b) FTTP
c) Cable
d) All of the mentioned

Answer: d
Explanation: None.

10) ONT is connected to splitter using
a) High speed fibre cable
b) HFC
c) Optical cable
d) None of the mentioned

Answer: c
Explanation: None.

11) These factors affect transmission rate in DSL
a) The gauge of the twisted-pair line
b) Degree of electrical interfernece
c) Shadow fading
d) Both a and b

Answer: d
Explanation: Because DSL is made of twisted wire copper pair.

All the best for your exams @Mission IT SO 2016