Computer Network Test Set 10
| Q46➡ | Which one of the following statements is FALSE? |
| i ➥ Packet switching leads to better utilization of bandwidth resources than circuit switching. |
| ii ➥ Packet switching results in less variation in delay than circuit switching. |
| iii ➥ Packet switching requires more per packet processing than circuit switching. |
| iv ➥ Packet switching can lead to reordering unlike in circuit switching |
| Q47➡ | Suppose that two parties A and B wish to setup a common secret key (D-H key) between themselves using the Diffie-Hellman key exchange technique. They agree on 7 as the modulus and 3 as the primitive root. Party A chooses 2 and party B chooses 5 as their respective secrets. Their D-H key is |
| i ➥ 3 |
| ii ➥ 4 |
| iii ➥ 5 |
| iv ➥ 6 |
| Q48➡ | A company has a class C network address of 204.204.204.0. It wishes to have three subnets, one with 100 hosts and two with 50 hosts each. Which one of the following options represents a feasible set of subnet address/subnet mask pairs? |
| i ➥ 204.204.204.128/255.255.255.192 204.204.204.0/255.255.255.128 204.204.204.64/255.255.255.128 |
| ii ➥ 204.204.204.0/255.255.255.192 204.204.204.192/255.255.255.128 204.204.204.64/255.255.255.128 |
| iii ➥ 204.204.204.128/255.255.255.128 204.204.204.192/255.255.255.192 204.204.204.224/255.255.255.192 |
| iv ➥ 204.204.204.128/255.255.255.128 204.204.204.64/255.255.255.192 204.204.204.0/255.255.255.192 |
| Q49➡ | A channel has a bit rate of 4 kbps and one-way propagation delay of 20 ms. The channel uses stop and wait protocol. The transmission time of the acknowledgement frame is negligible. To get a channel efficiency of at least 50%, the minimum frame size should be |
| i ➥ 80 bytes |
| ii ➥ 80 bits |
| iii ➥ 160 bytes |
| iv ➥ 160 bits |
| Q50➡ | A network with CSMA/CD protocol in the MAC layer is running at 1 Gbps over a 1 km cable with no repeaters. The signal speed in the cable is 2 × 108 m/sec. The minimum frame size for this network should be |
| i ➥ 10000 bits |
| ii ➥ 10000 bytes |
| iii ➥ 5000 bits |
| iv ➥ 5000 bytes |
Weekly Test GATE/NTA NET CSA
46- iii
47-
48-
49-iv
50-i
46.(ii)
47.×
48.(iii)
49.(iv)
50.(i)
Ans46-i
Ans47-
And48-iv
Ans49-iv
Ans50-i
46) C
47) A
48) D
49)
50) A
46,iii
47, iii
48, iii
49, iii
50, iii