Computer Knowledge
Computer Networks
2,614 Questions
Computer networks involve the architecture, protocols, and security measures used for digital communication. This collection covers OSI model layers, IP addressing, data transmission, and cryptographic standards. These concepts are vital for the computer knowledge sections of banking and government exams.
OSI model layersNetwork protocolsIP subnet maskingData encryption standardsServer configurationsNetwork commands
Computer Networks Questions
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Data link layer
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Transport layer
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Session layer
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Network layer
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Physical layer
B
Correct answer
Explanation
It is a true end to end layer from source to destination.In other words, a program on the source machine carries on a conversation with a similar program on the destination machine.
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130.215.8.145
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198.70.51.10
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130.215
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128.10.3.8
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36.56.0.10
E
Correct answer
Explanation
It is a class A host address.Range of class A host address =1.0.0.0 to 127.255.255.255
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ARP
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Reverse ARP
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DHCP
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ICMP
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Gateway
A
Correct answer
Explanation
It is a network layer protocol known as address resolution protocol used to map the internet addresses to physical addresses.
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128.8.129.0
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128.8.1.0
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128.0.0.0
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128.8.1.1
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128.8.55.0
B
Correct answer
Explanation
Changing the address into binary form and bit wise anding the ip address with mask address will give a subnet address.IP address 10000000.00001000.10000001.00101001 bit-wising anding with mask 11111111.11111111.00011111.00000000 will give subnet address 1000000.00001000.00000001.00000000(128.8.1.0)
C
Correct answer
Explanation
ftp uses 2 port number port number 20 for data transfer and port 21 for control information.
E
Correct answer
Explanation
It is an application layer protocol.
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General Packet Remote Service
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General Packet Radio Service
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General Packet Radio System
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Global Packet Radio Service
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None of these
B
Correct answer
Explanation
It is the correct answer. The full form of GPRS isĀ General Packet Radio Service.
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Internet control message protocol
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HTTP
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FTP
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Internet protocol
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TCP
D
Correct answer
Explanation
It is a routable protocol that addresses, routes, fragments, and reassembles packets.
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Serial line IP
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Point-to-point protocol
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Internet control message protocol
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HTTP
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File transfer protocol
B
Correct answer
Explanation
It is a network specific standard protocol described in RFC 1661 and RFC 1662.
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Transport layer
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Session layer
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Presentation layer
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Application layer
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Data link layer
E
Correct answer
Explanation
This layer transforms the physical layer, a raw transmission facility to a reliable link.
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Application layer
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Presentation layer
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Physical layer
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Session layer
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Transport layer
C
Correct answer
Explanation
It defines the procedures and functions that devices and interfaces have to perform for transmission to occur.
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Transport layer
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Network layer
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Session layer
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Presentation layer
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Application layer
B
Correct answer
Explanation
It includes logical addressing and routing.
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192.168.200.259
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200.259.192.168
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193.205.246.265
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192.168.146.246
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193.265.205.246
D
Correct answer
Explanation
IP addresses consist of four sets of numbers from 0 to 255, separated by three dots. 192.168.146.246 is a valid IP address.
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121.168.1.1
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131.168.1.1
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192.168.1.1
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225.168.1.1
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250.168.1.1
C
Correct answer
Explanation
192.168.1.1 is a class C IP address. Range of class C IP address is 192.0.0.0 to 223.255.255.255.
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Web server
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Web bionic
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Firewall
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Chrome 09
C
Correct answer
Explanation
Firewalls monitor and control network traffic between networks based on security rules. They inspect file transfers, block unauthorized data, and prevent malicious traffic. Web servers host websites, and 'web bionic' is meaningless (likely a typo). 'Chrome 09' is not a security utility. Firewalls are the correct answer as they are specifically designed for monitoring and restricting traffic between networks.