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Recent questions in Computer Networks

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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

1 vote
5 answers
1
nielit 2018 q52
Given a mask, M=255.255.255.248. How many subnet bits are required for given mask M? (A) 2 (B) 3 (C) 4 (D)5
Given a mask, M=255.255.255.248. How many subnet bits are required for given mask M? (A) 2 (B) 3 (C) 4 (D)5
asked Jul 18 in Computer Networks Sanjay Sharma 446 views
0 votes
1 answer
2
NIELIT 2016 MAR Scientist C - Section C: 20
Start and stop bits are used in serial communication for error detection error correction synchronization slowing down the communication
Start and stop bits are used in serial communication for error detection error correction synchronization slowing down the communication
asked Apr 2 in Computer Networks Lakshman Patel RJIT 55 views
0 votes
1 answer
4
NIELIT 2016 MAR Scientist C - Section C: 22
What are the primary characteristics that distinguish a cell from a packet? cells are generally smaller that packets cells do not incorporate physical address all cells have the same fixed length packet cannot be switched
What are the primary characteristics that distinguish a cell from a packet? cells are generally smaller that packets cells do not incorporate physical address all cells have the same fixed length packet cannot be switched
asked Apr 2 in Computer Networks Lakshman Patel RJIT 44 views
0 votes
1 answer
5
NIELIT 2016 MAR Scientist C - Section C: 33
In networking terminology UTP means Unshielded Twisted pair Ubiquitious Teflon port Uniformly Terminating port Unshielded T- connector port
In networking terminology UTP means Unshielded Twisted pair Ubiquitious Teflon port Uniformly Terminating port Unshielded T- connector port
asked Apr 2 in Computer Networks Lakshman Patel RJIT 42 views
0 votes
2 answers
7
NIELIT 2017 OCT Scientific Assistant A (IT) - Section C: 4
Bit stuffing refers to Inserting a $’0’$ in user data stream to differentiate it with a flag Inserting a $’0’$ in flag stream to avoid ambiguity Appending a nibble to the flag sequence Appending a nibble to the user data stream [closed]
Bit stuffing refers to Inserting a $’0’$ in user data stream to differentiate it with a flag Inserting a $’0’$ in flag stream to avoid ambiguity Appending a nibble to the flag sequence Appending a nibble to the user data stream
asked Apr 1 in Computer Networks Lakshman Patel RJIT 174 views
0 votes
1 answer
8
NIELIT 2017 OCT Scientific Assistant A (IT) - Section B: 25
The address of a class $B$ Host is to be split into subnets with a $3$-bit subnet number. What is the maximum number of subnets and maximum number of hosts in each subnet? $8$ subnets and $262142$ hosts $6$ subnets and $262142$ hosts $6$ subnets and $1022$ hosts $8$ subnets and $1024$ hosts
The address of a class $B$ Host is to be split into subnets with a $3$-bit subnet number. What is the maximum number of subnets and maximum number of hosts in each subnet? $8$ subnets and $262142$ hosts $6$ subnets and $262142$ hosts $6$ subnets and $1022$ hosts $8$ subnets and $1024$ hosts
asked Apr 1 in Computer Networks Lakshman Patel RJIT 111 views
0 votes
2 answers
13
NIELIT 2017 OCT Scientific Assistant A (CS) - Section B: 24
Bit stuffing refers to Inserting a $’0’$ in user data stream to differentiate it with a flag Inserting a $’0’$ in flag stream to avoid ambiguity Appending a nibble to the flag sequence Appending a nibble to the user data stream
Bit stuffing refers to Inserting a $’0’$ in user data stream to differentiate it with a flag Inserting a $’0’$ in flag stream to avoid ambiguity Appending a nibble to the flag sequence Appending a nibble to the user data stream
asked Apr 1 in Computer Networks Lakshman Patel RJIT 81 views
0 votes
1 answer
14
NIELIT 2017 OCT Scientific Assistant A (CS) - Section B: 26
If the channel is band limited to $6\;kHz$ and signal to noise ratio is $16,$ what would be the capacity of channel? $16.15$ kbps $23.24$ kbps $40.12$ kbps $24.74$ kbps
If the channel is band limited to $6\;kHz$ and signal to noise ratio is $16,$ what would be the capacity of channel? $16.15$ kbps $23.24$ kbps $40.12$ kbps $24.74$ kbps
asked Apr 1 in Computer Networks Lakshman Patel RJIT 36 views
0 votes
2 answers
15
NIELIT 2017 DEC Scientific Assistant A - Section B: 1
Correct expression tor UDP user datagram length is length of UDP = length of IP- length of IP header's length of UDP= length of UDP-length of UDP header's length of UDP = length of IP+length of IP header's length of UDP = length of UDP+length of UDP header's
Correct expression tor UDP user datagram length is length of UDP = length of IP- length of IP header's length of UDP= length of UDP-length of UDP header's length of UDP = length of IP+length of IP header's length of UDP = length of UDP+length of UDP header's
asked Mar 31 in Computer Networks Lakshman Patel RJIT 241 views
0 votes
1 answer
16
NIELIT 2017 DEC Scientific Assistant A - Section B: 11
Closed - Loop control mechanism try to : Remove congestion after it occurs Remove congestion after sometime Prevent congestion before it occurs Prevent congestion before sending packets
Closed - Loop control mechanism try to : Remove congestion after it occurs Remove congestion after sometime Prevent congestion before it occurs Prevent congestion before sending packets
asked Mar 31 in Computer Networks Lakshman Patel RJIT 138 views
0 votes
1 answer
18
NIELIT 2017 DEC Scientific Assistant A - Section B: 13
Which multiple access technique is used by $\text{IEEE } 802.11$ standard for wireless $\text{LAN}$ ? $\text{CDMA}$ $\text{CSMA/CA}$ $\text{ALOHA}$ None of the options
Which multiple access technique is used by $\text{IEEE } 802.11$ standard for wireless $\text{LAN}$ ? $\text{CDMA}$ $\text{CSMA/CA}$ $\text{ALOHA}$ None of the options
asked Mar 31 in Computer Networks Lakshman Patel RJIT 126 views
0 votes
2 answers
19
NIELIT 2017 DEC Scientific Assistant A - Section B: 14
$PGP$ encrypts data by using a block cipher called : international data encryption algorithm private data encryption algorithm internet data encryption algorithm none of the options
$PGP$ encrypts data by using a block cipher called : international data encryption algorithm private data encryption algorithm internet data encryption algorithm none of the options
asked Mar 31 in Computer Networks Lakshman Patel RJIT 335 views
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