Basic Telecom Objective type Qustions | PSTN - Network Topology Questions

Q 1.  One amongst the following is not a network technology. Find the option out.

A. PSTN 

B. ATM 

C. SONNET/SDH 

D. BSDN

E. DSL

Q 2. In USA telecom scenario every ixc (inter exchange carrier) puts up a _____ in lata (local transport area)

A.Trunk

B. POP 

C. LEC 

D. None

Q 3. Which of the following statement describes access network of PSTN in the most appropriate manner:-

A. Access Network Connects Access Node (edge of access network) to the individual subscriber.

B. Access Network Consists of trunk/toll exchanges.

C. Access Network is a combination of switching systems

D. Access Network consists of transmission systems connecting switching centers

 Q 4.Which of the following statement is most appropriate in the context of communication protocol?

A. Protocol has syntax, semantics and logical sequencing

B. Protocol consists of rules.

C. Protocol has logical sequencing

D. Protocol has prototypes

Q 5. IP addressing as well as routing based on IP address happens at ______ layer in TCP/IP protocol stack.

A. datalink

B. Transport

C. Application

D. Network

E. Presentation

Q.6 Which one from the following properties of the signal can be change?

A. Amplitude and frequency 

B. Frequency and phase 

C. amplitude and phase 

D. Amplitude, frequency as well as phase

Q.7 What is the equation for SNR?

A. SNR=10log10(Ps/Pn) 

B. SNR=10log2(Ps/Pn) 

C. SNR=2log10(Ps/Pn)

D. SNR=2log2(Ps/Pn)

Q.8 For a signal with frequency range of (0-3) KHZ, what is the minimum sampling frequency required to reproduce the signal according to the sampling theorem

A. 1.3 KHz 

B. 2.6 KHz 

C. 9 KHz 

D. 4.7Khz

Q.9 TV and Radio are entertainment media. Which of the following modulation techniques are used in radio transmission?

A. AM and FM  

B. AM and PM

C. FM and PM 

D. AM,FM and PM

Q.10 In the process of modulation which of the following cannot be digital signal at all

A. Input signal and output signal 

B. Input signal and carrier signal 

C. Output signal and carrier signal 

D. None of the above

Answers for Basic Telecom questionnaires’:-  

Question Number	Correct Answer
1	D
2	B
3	A
4	A
5	D
6	D
7	A
8	B
9	A
10	C

Basic Telecom Objective Question TDM, FDM, PSTN - Part 2