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Test by Bikram | Computer Networks | Test 1 | Question: 30
The bandwidth in a CSMA/CD network is $10$ Mbps. The minimum frame size required in the network when RTT is $384$ microsecond _______ in Bytes.

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

514 views

1 vote

1 answer

2

Test by Bikram | Computer Networks | Test 1 | Question: 29
A selective repeat ARQ uses a window size of $26$ to send the data. The number of bits needed to define the sequence number is _____.

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

408 views

2 votes

3 answers

3

Test by Bikram | Computer Networks | Test 1 | Question: 28
Which among the following services is provided by the transport layer? Recovery from message loss. End to end delivery of individual messages. Correct order message delivery. All of the above.

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

722 views

6 votes

3 answers

4

Test by Bikram | Computer Networks | Test 1 | Question: 27
A sliding window protocol uses Selective Repeat. The sender sliding window size is $32$. After receiving the first $100$ frames, the acknowledgement number that is piggybacked by the receiver along with data frame is _______.

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

1.9k views

8 votes

2 answers

5

Test by Bikram | Computer Networks | Test 1 | Question: 26
Consider a sliding window protocol that uses Selective Repeat, the sender sliding window size is $32$. The sequence number of the frame to be sent after sending $200$ frames ___________

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

858 views

2 votes

3 answers

6

Test by Bikram | Computer Networks | Test 1 | Question: 25
A $3000$ km long trunk operates at $1.536\times 10^6$ bps and is used to transmit $64$ byte frames using sliding window protocol. If the propagation speed is $6$ microseconds/km then the number of bits needed for the sequence number for maximum efficiency is _______

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

1.3k views

1 vote

1 answer

7

Test by Bikram | Computer Networks | Test 1 | Question: 24
... a-1,b-4, c-3,d-2 b-1,a-4, c-3,d-2 a-1,c-4, b-3,d-2 d-1,b-4, a-3,c-2

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

237 views

1 vote

1 answer

8

Test by Bikram | Computer Networks | Test 1 | Question: 23
The bandwidth in a Stop n Wait ARQ is $1$ Gbps and $1$ bit delay to make round trip time $30$ microseconds, if data frames are $2000$ bits in length then the link is utilized in __________ percentage.

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

982 views

2 votes

1 answer

9

Test by Bikram | Computer Networks | Test 1 | Question: 22
A TCP connection is transferring $6000$ bytes where the first byte is numbered $10010.$ If data is sent in five segments with the first four segments carrying $1000$ bytes and the last segment carrying $2000$ bytes then number of the last byte sent is ______

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

704 views

1 vote

3 answers

10

Test by Bikram | Computer Networks | Test 1 | Question: 21
Let the number of bits used to represent the frame sequence number is $x$ then the total number of frames in the sliding window can be send from sender side using Go Back $N$ is : $1$ $2x$ $2x - 1$ $2(x - 1)$

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

447 views

2 votes

2 answers

11

Test by Bikram | Computer Networks | Test 1 | Question: 20
Two hosts $A$ and $B$ are connected via a Router $R$ with two links $L_1$ and $L_2.$ Each link is $125m$ long and has a bandwidth of $109 \;bps.$ If router queuing delay is $5$ microsec and propagation speed is $250,000$ km/sec the total transfer delay of $1$ kB packet from $A$ to $B$ is _______ microsec

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

1.1k views

4 votes

2 answers

12

Test by Bikram | Computer Networks | Test 1 | Question: 19
A $20$ kbps satellite link has propagation delay of $300$ ms , transmitter use Go Back $10$ ARQ scheme, if each frame is $50$ bytes long then the maximum data rate is ________ kbps

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

821 views

0 votes

1 answer

13

Test by Bikram | Computer Networks | Test 1 | Question: 18
Number of subnets can be formed by using the subnet mask $255.255.248.0$ in a class B network _________

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

391 views

3 votes

2 answers

14

Test by Bikram | Computer Networks | Test 1 | Question: 17
A message bit stream is $101101101$, the bit pattern will be if message is transmitted with bit stuffing and a flag bit of $0111$___________

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

602 views

6 votes

2 answers

15

Test by Bikram | Computer Networks | Test 1 | Question: 16
In a token bucket network transmission spreed is $20^*(10^6)$ bps and maximum rate can only be sent for at most $10$ sec at a time, and at most $150$ Mb can be sent over any $15$ sec window, then the value for token input rate is _________ mbps

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

1.2k views

1 vote

1 answer

16

Test by Bikram | Computer Networks | Test 1 | Question: 15
A LAN operates Ethernet with CSMA/CD mechanism runs at a transmission rate of 8 Mbps and one way signal propagation time is 25 microsecond, the minimum transmitted frame length is ________ bits

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

268 views

1 vote

1 answer

17

Test by Bikram | Computer Networks | Test 1 | Question: 14
In a class B network subnet mask for $200$ subnets each with $220$ systems will be $255.255.255.0$ $255.255.0.0$ $255.255.224.0$ $255.0.0.0$

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

472 views

1 vote

1 answer

18

Test by Bikram | Computer Networks | Test 1 | Question: 13
Which parameter can be used by a firewall to decide whether to forward or drop packets? source ip address & destination ip address tcp/udp source and destination port number tcp SYN and ACK bits all of these

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

452 views

5 votes

2 answers

19

Test by Bikram | Computer Networks | Test 1 | Question: 12
Sanjay is looking for a file from the file server for his word processing application, which layer is responsible for this function? Presentation Transport Network Session

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

731 views

4 votes

1 answer

20

Test by Bikram | Computer Networks | Test 1 | Question: 11
An organization with a class C IP address of $195.37.5.0$ wish to divide the network into different sub networks, the subnet mask is 255.255.255.192. Which one among these is not a broadcast address in any of the sub network? $195.37.5.127$ $195.37.5.191$ $195.37.5.31$ $195.37.5.255$

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

412 views

1 vote

1 answer

21

Test by Bikram | Computer Networks | Test 1 | Question: 10
Symmetric key algorithm is same as: RSA encryption Public key encryption Secret key encryption Secret hash encryption

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

303 views

3 votes

0 answers

22

Test by Bikram | Computer Networks | Test 1 | Question: 9
Internet address always have at least: A country name or organization type Internet service provider's name Name of organization Name of individual Type of organization ii, iii,iv i, iii i,ii,iii ii,iii,iv,v

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

560 views

2 votes

3 answers

23

Test by Bikram | Computer Networks | Test 1 | Question: 8
The message $11011011$ should be transmitted using CRC polynomial $x3+x+1$, to protect it from errors that message will be transmitted as ________

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

828 views

4 votes

1 answer

24

Test by Bikram | Computer Networks | Test 1 | Question: 7
Consider private key crypto-system has $3$ keys, $3$ plain-texts and $4$ cipher-texts: $K=\{ k1,k2,k3 \}$ $M=\{m1, m2,m3 \}$ $C=\{c1,c2,c3,c4 \}$ In a valid encryption table find the key that maps two different messages to same cipher text: k1 k2 k3 No key can map

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

480 views

6 votes

1 answer

25

Test by Bikram | Computer Networks | Test 1 | Question: 6
IP address of a particular class B host is $152.45.32.14$, what is the broadcast address of the subnet if the subnet mask is $255.255.240.0$? $152.45.47.255$ $152.45.255.255$ $152.45.53.14$ $152.45.47.256$

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

745 views

1 vote

1 answer

26

Test by Bikram | Computer Networks | Test 1 | Question: 5
A class C network is sub divided into subnets with $3$ bit subnet number, the maximum number of available hosts in each sub network is __________

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

470 views

3 votes

1 answer

27

Test by Bikram | Computer Networks | Test 1 | Question: 4
Routers can be configured using several sources, which among these can not be used for Router Configuration? Removable media Console port TFTP server Virtual terminals

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

669 views

3 votes

1 answer

28

Test by Bikram | Computer Networks | Test 1 | Question: 3
Let the source has sent four TCP segments to Destination with the sequence numbers $50, \ 74, \ 97,\ 120$ ($1$st, $2$nd, $3$rd and $4$th segment) if the first and fourth segments arrive at destination successfully then the negative acknowledgement that destination sends to source is _______

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

664 views

1 vote

1 answer

29

Test by Bikram | Computer Networks | Test 1 | Question: 2
A CRC code use the generator polynomial $x6+x4+x+1$ and it has $10$ message bits, what is the redundant check bits appended to the following message at sender side $1011001011$? $000001$ $000011$ $000000$ $110000$

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

310 views

4 votes

3 answers

30

Test by Bikram | Computer Networks | Test 1 | Question: 1
A class B address has the subnet mask of $255.255.224.0$. what will be the IP address of the second host in the second sub network of the main network address $132.55.0.0$? $132.55.0.1$ $132.55.32.2$ $132.55.64.1$ $132.55.64.2$

Bikram asked in Computer Networks Nov 26, 2016

by Bikram

1.0k views

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Recent questions tagged tbb-cn-1