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Recent questions tagged computer-networks

0 votes
1 answer
1
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
3
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
4
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
6
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
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
7
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
12
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
13
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
14
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
15
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
17
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
18
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
0 votes
1 answer
20
NIELIT 2017 DEC Scientific Assistant A - Section B: 25
What is the value of acknowledgement field in a segment Number of previous bytes to receive Total number of bytes to receive Number of next bytes to receive Sequence of zero's and one's
What is the value of acknowledgement field in a segment Number of previous bytes to receive Total number of bytes to receive Number of next bytes to receive Sequence of zero's and one's
asked Mar 31 in Computer Networks Lakshman Patel RJIT 95 views
1 vote
1 answer
22
NIELIT 2017 DEC Scientific Assistant A - Section B: 28
There is a need to create a network that has $5$ subnets, each with at least $16$ hosts. Which one is used as classful subnet mask ? $255.255.255.192$ $255.255.255.248$ $255.255.255.240$ $255.255.255.224$
There is a need to create a network that has $5$ subnets, each with at least $16$ hosts. Which one is used as classful subnet mask ? $255.255.255.192$ $255.255.255.248$ $255.255.255.240$ $255.255.255.224$
asked Mar 31 in Computer Networks Lakshman Patel RJIT 153 views
1 vote
2 answers
25
NIELIT 2017 DEC Scientific Assistant A - Section B: 43
When we use slow-start algorithm, the size of the congestion window increases _______ until it reaches a threshold. Additively Multiplicatively Exponentially None of the options
When we use slow-start algorithm, the size of the congestion window increases _______ until it reaches a threshold. Additively Multiplicatively Exponentially None of the options
asked Mar 31 in Computer Networks Lakshman Patel RJIT 170 views
2 votes
1 answer
29
NIELIT 2017 DEC Scientific Assistant A - Section B: 51
The demerits of the fragmentation are : Complex routers Open to DOS attack No overlapping of fragments $\left (A \right)$ and $\left ( B \right)$ both
The demerits of the fragmentation are : Complex routers Open to DOS attack No overlapping of fragments $\left (A \right)$ and $\left ( B \right)$ both
asked Mar 31 in Computer Networks Lakshman Patel RJIT 120 views
0 votes
2 answers
30
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.
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 bits from one network 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 Lakshman Patel RJIT 378 views
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