Recent questions in Computer Networks

Concept of layering. LAN technologies (Ethernet).Flow and error control techniques, Swithing. IPv4/ IPv6, Routers and routing algorithms (distance vector, link state). TCP/UDP and Sockets, Congestion control. Application layer protocols (DNS, SMTP, POP, FTP, HTTP). Basics of Wi-Fi. Network security: authentication, basics of public key and private key cryptography, digital signatures and certificates, Firewalls.

$$\small{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}&\textbf{2019}&\textbf{2018}&\textbf{2017-1}&\textbf{2017-2}&\textbf{2016-1}&\textbf{2016-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count}&1&3&2&3&2&3&1&2.3&3
\\\hline\textbf{2 Marks Count}&4&2&3&1&4&3&1&2.8&4
\\\hline\textbf{Total Marks}&9&7&8&5&10&9&\bf{5}&\bf{8}&\bf{10}\\\hline
\end{array}}}$$

Recent questions in Computer Networks

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NIELIT 2016 MAR Scientist B - Section C: 53
In context of TCP/IP computer network models, which of the following is FALSE? Besides span of geographical area, the other major difference between LAN and WAN is that the later uses switching element. A repeater is used just to forward ... to another one. IP layer is connected oriented layer in TCP/IP. A gateway is used to connect incompatible networks.

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 82 views

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NIELIT 2016 MAR Scientist B - Section C: 54
Which of the following is not a transceiver function? Transmission and receipt of data. Checking of line voltages. Addition and subtraction of headers. Collision detection.

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 32 views

0 votes

1 answer

3

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NIELIT 2016 MAR Scientist B - Section C: 55
A packet switching network is free. can reduce the cost of using an information utility. allows communications channel to be shared among more than one user. both (B) and (C).

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 39 views

0 votes

1 answer

4

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NIELIT 2016 DEC Scientist B (IT) - Section B: 2
Three or more devices share a link in ________ connection Unipoint Polarpoint Point to point Multipoint

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 62 views

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1 answer

5

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NIELIT 2016 DEC Scientist B (IT) - Section B: 19
Which protocol finds the MAC address from IP address? SMTP ICMP ARP RARP

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 65 views

0 votes

1 answer

6

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NIELIT 2016 DEC Scientist B (IT) - Section B: 22
Bluetooth is an example of: Local area network. Virtual private network. Personal area network. None of the mentioned above

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 45 views

0 votes

1 answer

7

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NIELIT 2016 DEC Scientist B (IT) - Section B: 31
A set of rules that governs data communication: Rule Medium Link Protocol

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 36 views

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1 answer

8

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NIELIT 2016 DEC Scientist B (IT) - Section B: 47
The ________ is the physical path over which a message traversals. Path Protocol Route Medium

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 44 views

0 votes

1 answer

9

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NIELIT 2016 DEC Scientist B (IT) - Section B: 49
Application layer protocol defines: types of messages exchanged rules for when and how processes send and respond to messages message format, syntax and semantics all of the above

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 31 views

0 votes

1 answer

10

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NIELIT 2016 DEC Scientist B (IT) - Section B: 54
Which of this is not a network edge device? PC Server Smartphone Switch

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 30 views

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1 answer

11

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NIELIT 2016 DEC Scientist B (CS) - Section B: 9
The first network: ARPANET. NFSNET. CNNET. ASAPNET.

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 37 views

0 votes

1 answer

12

51 views

NIELIT 2016 DEC Scientist B (CS) - Section B: 19
Communication between a computer and a keyboard involves transmission Simplex. Half-Duplex. Automatic. Full-Duplex.

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 51 views

0 votes

1 answer

13

46 views

NIELIT 2016 DEC Scientist B (CS) - Section B: 20
Bluetooth is an example of: Personal area network. Virtual private network. Local area network. None of the above.

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 46 views

0 votes

1 answer

14

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NIELIT 2016 DEC Scientist B (CS) - Section B: 22
The structure or format of data is called: Syntax. Struct. Semantic. none of the above.

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 44 views

0 votes

1 answer

15

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NIELIT 2016 DEC Scientist B (CS) - Section B: 25
A low pass filter is: Passes the frequencies lower than the specified cutoff frequency. Used to recover signal from sampled signal. Rejects higher frequencies. All of the above.

asked Mar 31 in Computer Networks by Lakshman Patel RJIT Veteran (63.1k points) 31 views

0 votes

1 answer

16

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UGCNET-Dec2007-II: 4
Let e : B^m → B^n is a group code. The minimum distance of ‘e’ is equal to : the maximum weight of a non zero code word. the minimum weight of a non zero code word. m n

asked Mar 28 in Computer Networks by jothee Veteran (109k points) 39 views

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UGCNET-Dec2007-II: 26
The best known example of a MAN is : Ethernet. Cable Television. FDDI. IEEE $802.3$.

asked Mar 28 in Computer Networks by jothee Veteran (109k points) 38 views

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1 answer

18

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UGCNET-Dec2007-II: 27
In a broadcast network, a layer that is often thin or non-existent is : network layer. transport layer. presentation layer. application layer.

asked Mar 28 in Computer Networks by jothee Veteran (109k points) 32 views

0 votes

1 answer

19

33 views

UGCNET-Dec2007-II: 28
The maximum data rate of binary signals on a noiseless $3\:KHz$ channel is : $3000$ bps. $6000$ bps. $9000$ bps. $12,000$ bps.

asked Mar 28 in Computer Networks by jothee Veteran (109k points) 33 views

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UGCNET-Dec2007-II: 29
For pure ALOHA, the maximum channel utilization is : $100\%$ $50\%$ $36\%$ $18\%$

asked Mar 28 in Computer Networks by jothee Veteran (109k points) 43 views

0 votes

1 answer

21

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UGCNET-Dec2007-II: 30
An example of an adaptive routing algorithm is : distance vector routing. flooding. selective flooding. shortest path routing.

asked Mar 28 in Computer Networks by jothee Veteran (109k points) 32 views

0 votes

1 answer

22

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UGCNET-Dec2006-II: 26
How many DS1 signals are transported on a DS3 signal ? $24$ $672$ $14$ $28$

asked Mar 27 in Computer Networks by jothee Veteran (109k points) 24 views

0 votes

1 answer

23

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UGCNET-Dec2006-II: 27
A $10\:\text{BASE-}2$ network is limited to : $20$ bytes per data field. $30$ stations per segment. $40$ segments. $50$ feet of cable.

asked Mar 27 in Computer Networks by jothee Veteran (109k points) 33 views

+1 vote

2 answers

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UGCNET-Dec2006-II: 28
The network $198.78.41.0$ is a : Class A Network Class B Network Class C Network Class D Network

asked Mar 27 in Computer Networks by jothee Veteran (109k points) 46 views

0 votes

3 answers

25

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UGCNET-Dec2006-II: 29
The subnet mask $255.255.255.192$ Extends the network portion to 16 bits. Extends the network portion to 26 bits. Extends the network portion to 36 bits. Has no effect on the network portion of an IP address.

asked Mar 27 in Computer Networks by jothee Veteran (109k points) 41 views

0 votes

1 answer

26

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UGCNET-Dec2004-II: 26
Error control is needed at the transport layer because of potential error occuring __________. from transmission line noise. in router. from out of sequency delivery. from packet losses.

asked Mar 26 in Computer Networks by jothee Veteran (109k points) 29 views

0 votes

1 answer

27

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UGCNET-Dec2004-II: 27
Making sure that all the data packets of a message are delivered to the destination is _________ control. Error. Loss. Sequence. Duplication.

asked Mar 26 in Computer Networks by jothee Veteran (109k points) 23 views

0 votes

1 answer

28

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UGCNET-Dec2004-II: 28
Which transport class should be used with a perfect network layer ? $TP0$ and $TP2.$ $TP1$ and $TP3.$ $TP0, TP1, TP3.$ $TP0, TP1, TP2, TP3, TP4.$

asked Mar 26 in Computer Networks by jothee Veteran (109k points) 23 views

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29

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UGCNET-Dec2004-II: 29
Which transport class should be used with residual-error network layer ? $TP0, TP2.$ $TP1, TP3$ $TP1, TP3, TP4$. $TP0, TP1, TP2, TP3, TP4.$

asked Mar 26 in Computer Networks by jothee Veteran (109k points) 16 views

0 votes

1 answer

30

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UGCNET-Dec2004-II: 30
Virtual circuit is associated with a __________ service. Connectionless. Error-free. Segmentation. Connection-oriented.

asked Mar 26 in Computer Networks by jothee Veteran (109k points) 30 views

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