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

Multiple choice

Which of the following is/are true about Backbone router in OSPF (Open Shortest Path First) Protocol?

  1. It includes all area border routers and also routers connecting to different areas.

  2. It has only OSPF neighbour relationships with routers in the same area.

  3. It connects one or more OSPF areas to the main backbone network.

  4. It is an interface elected among all routers on a network segment.

  5. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is correct as the Backbone router connects the border routes of the OSPF backbone.

Multiple choice

Which of the following is/are false statement(s) for Routing Information Protocol (RIP) in CCNA routing?

  1. RIP is called distance-vector routing protocol.

  2. RIP uses the criteria like the link's speed, delay, packet size, loading and reliability to determine the best path.

  3. The time to converge and scalability are poor in RIP protocols.

  4. In RIP, the maximum allowable number of hops a packet can traverse in an IP network implementing RIP is 15 hops.

  5. Both (2) and (4)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

RIP uses only one criteria i.e. hops to determine the best path.

Multiple choice

Which of the following is/are true about Area Border Router (ABR) in OSPF (Open Shortest Path First) Protocol?

  1. It includes all area border routers and also routers connecting different areas.

  2. It has only OSPF neighbour relationships with routers in the same area.

  3. It connects one or more OSPF areas to the main backbone network.

  4. It is an interface elected among all routers on a network segment.

  5. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An Area Border Router (ABR) connects one or more OSPF areas to the main backbone network.

Multiple choice

Which of the following is/are true about Internal Router in OSPF (Open Shortest Path First) Protocol?

  1. It includes all area border routers and also routers connecting different areas.

  2. It has only OSPF neighbour relationships with routers in the same area.

  3. It connects one or more OSPF areas to the main backbone network.

  4. It is an interface elected among all routers on a network segment.

  5. Both (3) and (4)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An internal router has only OSPF neighbour relationships with routers in the same area.

Multiple choice

Which of the following is called Wildcard Mask in Open Shortest Path First (OSPF) Protocol Configuration?

  1. It is a unique number on this router that groups a series of OSPF configuration commands under a specific running process.

  2. It is a mask of bits that indicates the availability of the IP address for the particular network.

  3. It gives the routing updates to OSPF protocol.

  4. It determines the size of a network or subnet for some routing protocols.

  5. Both (2) and (4)
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

These are the correct statements.

Multiple choice

What is the work of ATM LANE Emulation Protocol (LANE) while communicating with VLANs?

  1. This protocol is used to interconnect two VLAN-capable Ethernet.

  2. The protocol provides authenticity or integrity to the data.

  3. This protocol interconnects multiple switches and routers.

  4. By using LANE protocol, applications can use normal LAN functions without the underlying complexities of the ATM implementation.

  5. Both (2) and (3)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct statement about LANE protocol.

Multiple choice

Transport layer of TCP/IP model comprises _______ and _______ protocols.

  1. TELNET; SMTP

  2. TCP; IP

  3. TCP; UDP

  4. IP; UDP

  5. TCP; TELNET
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

TCP and UDP are parts of transport layer. TCP is a reliable connection oriented protocol that allows a byte stream originating from one machine to be delivered to the other machine without any error. UDP is an unreliable and connectionless protocol.

Multiple choice

NNTP protocol is used for

  1. fetching pages on the WWW

  2. moving USENET news articles around

  3. email

  4. file transfer

  5. delivering audio and video over IP networks
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

NNTP (Network News Transfer Protocol) protocol is used for moving USENET articles around. USENET is a worldwide distributed internet discussion system.

Multiple choice

Which protocol is used to configure network devices to communicate on an IP network?

  1. NTP

  2. DHCP

  3. TFTP

  4. RTP

  5. IGMP
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DHCP (Dynamic Host Configuration Protocol) is used to configure network devices to communicate on an IP network. A DHCP client uses the DHCP protocol to acquire configuration information such as an IP address, a default root and one or more DNS server addresses from a DHCP server. The DHCP client then uses this information to configure its host. Once the configuration process is complete, the host is able to communicate on the internet.