UGC NET Computer Science July 2018 - II Question 46

Question 46

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46. Which of the following statements are true ?
(a) Three broad categories of Networks are
(i) Circuit Switched Networks
(ii) Packet Switched Networks
(iii) Message Switched Networks
(b) Circuit Switched Network resources need not be reserved during the set up phase.
(c) In packet switching there is no resource allocation for packets.

Code :

1. (1) (a) and (b) only
2. (2) (b) and (c) only
3. (3) (a) and (c) only
4. (4) (a), (b) and (c)

Answer : (3) (a) and (c) only

Explanation Question 46

• TRUE (a) Three broad categories of Networks are (i) Circuit Switched Networks, (ii) Packet Switched Networks, (iii) Message Switched Networks
• FALSE (b) Circuit Switched Network resources need not be reserved during the set up phase.
• TRUE (c) In packet switching there is no resource allocation for packets.

Statement (b) is false because in Circuit Switched Network there is a need of pre-specified route from which data will travels and no other data is permitted. So, It reserves the route dusring the setup phase.

So, option (3) is correct answer

Here, this link is useful to differentiate type of networks :  DCN - Network Switching

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