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Recent questions tagged computer-networks

4 votes
4 answers
2701
ISRO2009-74
Use of IPSEC in tunnel mode results in IP packet with same header IP packet with new header IP packet without header No changes in IP packet
Use of IPSEC in tunnel mode results inIP packet with same headerIP packet with new headerIP packet without headerNo changes in IP packet
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0 votes
1 answer
2703
Lectures for Basics of Wi-Fi and Network security
Does anyone has any online resource that contains good lectures on Basics of Wi-Fi and Network security? Thanks in advance .
Does anyone has any online resource that contains good lectures on Basics of Wi-Fi and Network security? Thanks in advance .
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3 votes
3 answers
2704
ISRO2015-44
The DNS maps the IP address to A binary address as strings A n alphanumeric address A hierarchy of domain names A hexadecimal address
The DNS maps the IP address toA binary address as stringsA n alphanumeric addressA hierarchy of domain namesA hexadecimal address
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0 votes
1 answer
2705
Ccna
Is the ccna r&s coaching is beneficial to get good knowledge for networks basics? What are the good coaching for ccna in Delhi?
Is the ccna r&s coaching is beneficial to get good knowledge for networks basics?What are the good coaching for ccna in Delhi?
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7 votes
2 answers
2706
ISRO2009-6
$\textsf{SHA-1}$ is a encryption algorithm decryption algorithm key exchange algorithm message digest function
$\textsf{SHA-1}$ is aencryption algorithmdecryption algorithmkey exchange algorithmmessage digest function
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0 votes
1 answer
2707
Assume that source S and destination D are connected through two intermediate routers labeled R.
Determine how many times each packet has to visit the network layer and the data link layer during a transmission from S to D.
Determine how many times each packet has to visit the network layer and the data link layer during a transmission from S to D.
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5 votes
2 answers
2710
total address space
For a computer address,if we reduce the no of bits by 2 and if we double the addressability then total address space will be 1) Doubled 2) halved 3) Remain Same 4) None What is meant by Addressablity???
For a computer address,if we reduce the no of bits by 2 and if we double the addressability then total address space will be1) Doubled 2) halved 3) Remain Same 4) NoneWh...
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2 votes
2 answers
2711
ISRO-2013-45
A packet filtering firewall can Deny certain users from accessing a service Block worms and viruses from entering the network Disallow some files from being accessed through FTP Block some hosts from accessing the network
A packet filtering firewall canDeny certain users from accessing a serviceBlock worms and viruses from entering the networkDisallow some files from being accessed through...
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4 votes
2 answers
2712
ISRO-2013-44
Which algorithm is used to shape the bursty traffic into a fixed rate traffic by averaging the data rate? Solid bucket algorithm Spanning tree algorithm Hocken helm algorithm Leaky bucket algorithm
Which algorithm is used to shape the bursty traffic into a fixed rate traffic by averaging the data rate?Solid bucket algorithmSpanning tree algorithmHocken helm algorith...
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3 votes
3 answers
2713
ISRO-2013-43
What is IP class and number of sub-networks if the subnet mask is $255.224.0.0$? Class $A$, $3$ Class $A$, $8$ Class $B$, $3$ Class $B$, $32$
What is IP class and number of sub-networks if the subnet mask is $255.224.0.0$?Class $A$, $3$Class $A$, $8$Class $B$, $3$Class $B$, $32$
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7 votes
3 answers
2714
ISRO-2013-42
IPv6 does not support which of the following addressing modes? Unicast addressing Multicast addressing Broadcast addressing Anycast addressing
IPv6 does not support which of the following addressing modes?Unicast addressingMulticast addressingBroadcast addressingAnycast addressing
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7 votes
6 answers
2715
ISRO-2013-41
What will be the efficiency of a Stop and Wait protocol, if the transmission time for a frame is $20$ns and the propagation time is $30$ns? $20$% $25$% $40$% $66$%
What will be the efficiency of a Stop and Wait protocol, if the transmission time for a frame is $20$ns and the propagation time is $30$ns?$20$%$25$%$40$%$66$%
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5 votes
1 answer
2716
ISRO-2013-40
If the frame to be transmitted is $1101011011$ and the CRC polynomial to be used for generating checksum is $x^{4}+x+1$, than what is the transmitted frame? $11010110111011$ $11010110111101$ $11010110111110$ $11010110111001$
If the frame to be transmitted is $1101011011$ and the CRC polynomial to be used for generating checksum is $x^{4}+x+1$, than what is the transmitted frame?$1101011011101...
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3 votes
3 answers
2718
ISRO-2013-38
In the Ethernet, which field is actually added at the physical layer and is not part of the frame. Preamble CRC Address Location
In the Ethernet, which field is actually added at the physical layer and is not part of the frame.PreambleCRCAddressLocation
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0 votes
3 answers
2720
Let bandwidth of a token ring is 4 Mbps
Let bandwidth of a token ring is 4 Mbps and THT be 15ms. What is the maximum frame size and maximum payload size
Let bandwidth of a token ring is 4 Mbps and THT be 15ms. What is the maximum frame sizeand maximum payload size
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0 votes
2 answers
2724
How to find Modular Arithmetic ?
(a) Compute (7*11*711*777) mod 13 by modular arithmetic. (b) Compute (666^77) mod 11. Please tell me the procedure to solve such a question not just Answer .I know the answer.
(a) Compute (7*11*711*777) mod 13 by modular arithmetic.(b) Compute (666^77) mod 11.Please tell me the procedure to solve such a question not just Answer .I know the ...
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3 votes
2 answers
2726
from swp
in what protocol or protocols, it is possible for the sender to receive an ack for a packet that falls outside of its current window a. stop and wait b. selective repeat c.gbn d. all of the above
in what protocol or protocols, it is possible for the sender to receive an ack for a packet that falls outside of its current window a. stop and wait b. select...
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