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Recent questions tagged computer-networks

5 votes
4 answers
2671
ISRO2008-5
In Ethernet, the source address field in the MAC frame is the _______ address. original sender's physical previous station's physical next destination's physical original sender's service port
In Ethernet, the source address field in the MAC frame is the _______ address.original sender's physicalprevious station's physicalnext destination's physicaloriginal sen...
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7 votes
2 answers
2672
ISRO2008-3
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
The subnet mask $255.255.255.192$extends the network portion to $16$ bitsextends the network portion to $26$ bitsextends the network portion to $36$ bitshas no effect on ...
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10 votes
5 answers
2673
ISRO2007-75
When a host on network A sends a message to a host on network B, which address does the router look at? Port IP Physical Subnet mask
When a host on network A sends a message to a host on network B, which address does the router look at?PortIPPhysicalSubnet mask
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5 votes
3 answers
2674
ISRO2007-74
$\textsf{IEEE 802.11}$ is standard for Ethernet Bluetooth Broadband Wireless Wireless LANs
$\textsf{IEEE 802.11}$ is standard forEthernetBluetoothBroadband WirelessWireless LANs
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8 votes
5 answers
2675
ISRO2007-73
Range of IP Address from $224.0.0.0$ to $239.255.255.255$ are Reserved for loopback Reserved for broadcast Used for multicast packets Reserved for future addressing
Range of IP Address from $224.0.0.0$ to $239.255.255.255$ areReserved for loopbackReserved for broadcastUsed for multicast packetsReserved for future addressing
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8 votes
2 answers
2676
ISRO2007-71
Hashed message is signed by a sender using his public key his private key receiver’s public key receiver’s private key
Hashed message is signed by a sender usinghis public keyhis private keyreceiver’s public keyreceiver’s private key
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5 votes
1 answer
2677
ISRO2007-70
The standard for certificates used on internet is $\textsf{X.25}$ $\textsf{X.301}$ $\textsf{X.409}$ $\textsf{X.509}$
The standard for certificates used on internet is$\textsf{X.25}$$\textsf{X.301}$$\textsf{X.409}$$\textsf{X.509}$
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5 votes
2 answers
2678
ISRO2007-68
SSL is not responsible for Mutual authentication of client & server Secret communication Data Integrity protection Error detection and correction
SSL is not responsible forMutual authentication of client & serverSecret communicationData Integrity protectionError detection and correction
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7 votes
2 answers
2679
ISRO2007-66
Silly Window Syndrome is related to Error during transmission File transfer protocol Degrade in TCP performance Interface problem
Silly Window Syndrome is related toError during transmissionFile transfer protocolDegrade in TCP performanceInterface problem
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11 votes
3 answers
2680
ISRO2007-26
If there are five routers and six networks in intranet using link state routing, how many routing tables are there? $1$ $5$ $6$ $11$
If there are five routers and six networks in intranet using link state routing, how many routing tables are there?$1$$5$$6$$11$
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7 votes
2 answers
2681
ISRO2007-22
Phase transition for each bit are used in Amplitude modulation Carrier modulation Manchester encoding NRZ encoding
Phase transition for each bit are used inAmplitude modulationCarrier modulationManchester encodingNRZ encoding
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8 votes
2 answers
2682
ISRO2007-21
An Ethernet hub functions as a repeater connects to a digital PBX connects to a token-ring network functions as a gateway
An Ethernet hubfunctions as a repeaterconnects to a digital PBXconnects to a token-ring networkfunctions as a gateway
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0 votes
1 answer
2683
What should be the Token Holding Time
Can anyone explain why the answer is infinite time?
Can anyone explain why the answer is infinite time?
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3 votes
2 answers
2684
UGC NET CSE | June 2014 | Part 2 | Question: 05
Match the following $:$ ... $\text{a-i; b-iii; c-ii; d-v; e-iv}$ $\text{a-i; b-ii; c-iv; d-iii; e-v}$
Match the following $:$$\begin{array}{cIcI} & \textbf{List – I} && \textbf{List – II} \\ \text{a.} & \text{Physical layer} & \text{i.} & \text{Allow resources to net...
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1 votes
2 answers
2686
UGC NET CSE | December 2015 | Part 3 | Question: 13
In a classful addressing the IP address with $0$(zero) as network number: refers to the current network refers to broadcast on the local network refers to the broadcast on a distant network refers to loopback testing
In a classful addressing the IP address with $0$(zero) as network number:refers to the current networkrefers to broadcast on the local networkrefers to the broadcast on a...
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4 votes
2 answers
2687
UGC NET CSE | December 2015 | Part 3 | Question: 12
Consider a subnet with $720$ routers. If a three level hierarchy is chosen with $8$ clusters, each containing $9$ regions of $10$ routers, then total number of entries in the routing table is _______ $25$ $27$ $53$ $72$
Consider a subnet with $720$ routers. If a three level hierarchy is chosen with $8$ clusters, each containing $9$ regions of $10$ routers, then total number of entries in...
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0 votes
2 answers
2688
UGC NET CSE | June 2014 | Part 2 | Question: 04
The bit rate of a signal is $3000$ bps. If each signal unit carries $6$ bits, the baud rate of the signal is _________. $500$ baud/sec $1000$ baud/sec $3000$ baud/sec $18000$ baud/sec.
The bit rate of a signal is $3000$ bps. If each signal unit carries $6$ bits, the baud rate of the signal is _________. $500$ baud/sec $1000$ baud/sec $3000$ baud/sec $18...
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1 votes
2 answers
2689
UGC NET CSE | June 2014 | Part 2 | Question: 03
The minimum frame length for $10$ Mbps Ethernet is ________ bytes and maximum is _______ bytes. $64$ & $128$ $128$ & $1518$ $1518$ & $3036$ $64$ & $1518$
The minimum frame length for $10$ Mbps Ethernet is ________ bytes and maximum is _______ bytes.$64$ & $128$$128$ & $1518$ $1518$ & $3036$$64$ & $1518$
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0 votes
1 answer
2691
UGC NET CSE | December 2015 | Part 3 | Question: 10
The combination of an IP address and a port number is known as _____ network number socket address subnet mask number MAC address
The combination of an IP address and a port number is known as _____network numbersocket addresssubnet mask numberMAC address
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0 votes
3 answers
2692
What is RTT ? Is it RTT = 2 * Tp + Tt or RTT = 2 * Tp ?
ALSO EXPLAIN THE CASE OF FULL DUPLEX AND HALF DUPLEX .
ALSO EXPLAIN THE CASE OF FULL DUPLEX AND HALF DUPLEX .
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5 votes
5 answers
2693
ISRO2009-5
What is the primary purpose of a VLAN? Demonstrating the proper layout for a network Simulating a network To create a virtual private network Segmenting a network inside a switch or device
What is the primary purpose of a VLAN?Demonstrating the proper layout for a networkSimulating a networkTo create a virtual private networkSegmenting a network inside a sw...
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6 votes
2 answers
2694
ISRO2009-3
The address resolution protocol (ARP) is used for Finding the IP address from the DNS Finding the IP address of the default gateway Finding the IP address that corresponds to a MAC address Finding the MAC address that corresponds to an IP address
The address resolution protocol (ARP) is used forFinding the IP address from the DNSFinding the IP address of the default gatewayFinding the IP address that corresponds t...
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5 votes
2 answers
2696
ISRO2009-7
Advanced Encryption Standard (AES) is based on Asymmetric key algorithm Symmetric key algorithm Public key algorithm Key exchange
Advanced Encryption Standard (AES) is based onAsymmetric key algorithmSymmetric key algorithmPublic key algorithmKey exchange
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2 votes
2 answers
2697
ISI2013-PCB-CS-6a
A block of bits with $n$ rows and $m$ columns uses horizontal and vertical parity bits for error detection. If exactly 4 bits are in error during transmission, derive an expression for the probability that the error will be detected.
A block of bits with $n$ rows and $m$ columns uses horizontal and vertical parity bits for error detection. If exactly 4 bits are in error during transmission, derive an ...
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