Test: Access Networks

QUESTION: 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

Solution:

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

QUESTION: 2

In DSL telco provides these services

A.
Wired phone access
B.
ISP
C.
All of the mentioned
D.
None of the mentioned

Solution:

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

QUESTION: 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

Solution:

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

QUESTION: 4

The following term is not associted with DSL

A.
DSLAM
B.
CO
C.
Splitter
D.
CMTS

Solution:

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

QUESTION: 5

HFC contains

A.
Fibre cable
B.
Coaxial cable
C.
Both of the mentioned
D.
None of the mentioned

Solution:

Answer: c
Explanation: None.

QUESTION: 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

Solution:

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

QUESTION: 7

Among the optical-distribution architectures that is essentially switched ehternet is

A.
AON
B.
PON
C.
NON
D.
None of the mentioned

Solution:

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

QUESTION: 8

StarBand provides

A.
FTTH internet access
B.
Cable access
C.
Telephone access
D.
Satellite access

Solution:

Answer: d
Explanation: None.

QUESTION: 9

Home Access is provided by

A.
DSL
B.
FTTP
C.
Cable
D.
All of the mentioned

Solution:

Answer: d
Explanation: None.

QUESTION: 10

ONT is connected to splitter using

A.
High speed fibre cable
B.
HFC
C.
Optical cable
D.
None of the mentioned

Solution:

Answer: c
Explanation: None.

QUESTION: 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

Solution:

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

11 Questions MCQ Test Computer Networks | Test: Access Networks

Which of this is not a constituent of residential telephone line?

In DSL telco provides these services

The function of DSLAM is

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