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 incorrect about static routing?

  1. A static routing is a routing where route information can be manually configured on the router.

  2. Static routing does not require a network administrator for initial setup and for any changes to the routes.

  3. Static routing is very reliable and the router does not use much overhead to process the packets.

  4. Static routing does not update automatically and has higher continuing administrative costs.

  5. An example of static routing is default routing.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is incorrect.

Multiple choice

Which of the following is incorrect about unicasting communication?

  1. The communication using a unicast packet can be forwarded through an internetwork using different addresses.

  2. The process of sending a packet from one host to an individual host is called unicasting.

  3. Unicasting is the host-to-host communication in both a client/server and a peer-to-peer network.

  4. In unicasting, the host addresses assigned to the two end devices are used as the source and destination of IPv4 addresses.

  5. Unicasting places the IPv4 address of the destination host in the packet header as the destination address.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It is an incorrect answer since the communication using a unicast packet can be forwarded through an internetwork using the same address.

Multiple choice

Which of the following is incorrect about ISP?

  1. ISP is an internet service provider which provides Domain Name System (DNS) services, email services, etc. to the customers.

  2. Tier 2 ISPs tend to provide services to retail and home markets in a specific locale.

  3. ISPs are designated by a hierarchy based on their level of connectivity to the internet backbone.

  4. At the top of the ISP hierarchy are tier 1 ISPs which provide reliability and high speed services to the customers.

  5. ISP supplies a small number of usable IPv4 addresses (6 or14) to its customers as a part of its services.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is an incorrect statement about ISP.

Multiple choice

Where is a hub specified in the OSI model?

  1. Session Layer

  2. Physical Layer

  3. Data Link Layer

  4. Application Layer

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

It is the first or lowest layer of the OSI model. It is the layer where the data is either put onto the media or received off the media. The data is in the form of bits. It is responsible for sending bits from one computer to another.

Multiple choice

Which of the following layers of OSI model is called end-to-end layer?

  1. Presentation layer

  2. Network layer

  3. Session layer

  4. Transport layer

  5. _
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is the layer where the data is segmented and used by the TCP protocol to ensure accurate and reliable data is transferred and provides end-to-end or host-to-host communication services for applications within a layered architecture of network.

Multiple choice

Bridge works in which layer of the OSI model?

  1. Application layer

  2. Transport layer

  3. Network layer

  4. Datalink layer

  5. _
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is the layer where framing of data takes place. It is the protocol layer in a program that handles the moving of data in and out across a physical link in a network.

Multiple choice

What is represented by the last address of IP address?

  1. Unicast address

  2. Network address

  3. Broadcast address

  4. None of these

  5. _
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is the simultaneous transmission of a single message to all nodes on the network.It is usually a MAC address consisting of all F's. The broadcast address for a specific network includes all the ones in the host portion of the IP address.