Which of the following statements are true ? (a) Three broad categories of…
2018
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 :
- A.
(a) and (b) only
- B.
(b) and (c) only
- C.
(a) and (c) only
- D.
(a), (b) and (c)
Attempted by 1604 students.
Show answer & explanation
Correct answer: C
Answer: Statements (a) and (c) are true.
Statement (a): True. The three broad historical categories are circuit-switched networks, packet-switched networks, and message-switched networks.
Statement (b): False. In circuit-switched networks a dedicated path (and associated resources) is reserved during the connection setup phase until the connection is released.
Statement (c): True (in the general sense). Packet switching does not allocate a dedicated circuit or fixed resources for each packet; packets contend for shared resources and are forwarded independently (though QoS mechanisms can give preferred treatment, that is not the same as reserving a dedicated circuit).
Therefore the correct selection is the one that includes statements (a) and (c) only.
A video solution is available for this question — log in and enroll to watch it.