Computer Network Test Set 2
| Q6➡ | If a class B network is subnetted such that there are at least 20 subnets, what is the minimum number of bits that need to be used for the subnet mask? |
| i ➥ 4 |
| ii ➥ 3 |
| iii ➥ 8 |
| iv ➥ 5 |
| Q7➡ | Given the IP address 202.41.85.117/22, how many hosts can this network support? |
| i ➥ 1024 |
| ii ➥ 1022 |
| iii ➥ 254 |
| iv ➥ 512 |
| Q8➡ | Which of the OSI layers handles each of the following: (i) Dividing the transmitted bit stream into frames (ii) Determining which route through the subnet to use |
| i ➥ (i) Data link layer. (ii) network layer |
| ii ➥ (i) Data link layer. (ii) transport layer |
| iii ➥ (i) session layer. (ii) network layer |
| iv ➥ (i) physical layer. (ii) MAC layer |
| Q9➡ | Calculate the polynomial code checksum (CRC) for a frame 1101011011 using the generator G(x)=x4 + x + 1 |
| i ➥ 1111 |
| ii ➥ 1110 |
| iii ➥ 1101 |
| iv ➥ 1100 |
| Q10➡ | Two systems S1 and S2 are configured with the following IP address: S1: 203.197.2.53; netmask 255.255.128.0 S2: 203. 197.75.201;netmask 255.255.192.0 Which one of the following statements is true? |
| i ➥ S1 assumes S2 is on same network, but S2 assumes S1 is on a different network |
| ii ➥ S2 assumes S1 is on same network, but S1 assumes S2 is on a different network |
| iii ➥ S1 and S2 both assume they are on the same network |
| iv ➥ S1 and S2 both assume they are on different networks |
Weekly Test GATE/NTA NET CSA
6.(i)4
7.(ii) 1022
8.(i) (i) Data link layer. (ii) network layer
9. ( iv)1110
10. (i)
Ans 6 – 4
Ans 7 – 1024
Ans 8 – Data link layer. network layer
Ans 9 – 1110
Ans 10 – S1 assumes S2 is on same network, but S2 assumes S1 is on a different network
6-c
7-c
8-a
9-b
10-a
Ans6-iv
Ans7-ii
Ans8-i
Ans9-ii
Ans10-iv
6) D
7) B
8) A
9) C
10) D
6, ii
7, IV
8, iii
9, iii
10, iii