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Network Types, Architecture And Topologies : MCQs & PYQs with Explanation

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Network Types, Architecture And Topologies : Solved MCQs and PYQs

This section contains carefully selected MCQs and Previous Year Questions with explanations to help students understand concepts and prepare effectively for examinations, interviews, and competitive tests.

Topics Covered
Computer Network Types PAN LAN MAN WAN Network Classification Network Architecture Client-Server Architecture Peer-to-Peer Architecture Centralized and Distributed Architecture Network Topology Bus Topology Star Topology Ring Topology Mesh Topology Tree Topology Hybrid Topology Topology Comparison Network Standards Network Scope Network Design Considerations

Q: 1Which of the following is not a type of Network Topology?

A

Singleton Network

B

Start Network

C

Ring Network

D

Hybrid Network

Option A

Network Topology refers to the physical or logical arrangement of computers and communication devices in a network. It defines how different devices are connected and how data travels in the network.

  • Star Topology
  • Ring Topology
  • Bus Topology
  • Mesh Topology
  • Hybrid Topology
Network TopologyDescription
Bus TopologyIn bus topology, all computers are connected to a single main communication cable called backbone cable.
Star TopologyIn star topology, all computers are connected to a central hub or switch.
Ring TopologyIn ring topology, each computer is connected to two neighboring computers forming a circular path.
Mesh TopologyIn mesh topology, every computer is directly connected to every other computer in the network.
Tree TopologyIn tree topology, multiple star networks are connected in a hierarchical structure.
Hybrid TopologyIn hybrid topology, two or more different topologies are combined together.
Point-to-Point TopologyIn point-to-point topology, two devices are directly connected with each other.
Daisy Chain TopologyIn daisy chain topology, devices are connected one after another in a sequence.

Q: 2Let us assume that there are four (4) network segments in Bus topologies A1—A2, B1—B2—B3, C1—C2 and D1—D2—D3. If A1, B1, C1 and D1 are interconnected in mesh, then how many mesh connections are required?

A

45

B

6

C

10

D

12

Option B

Given 4 network segments represented by points A1, B1, C1, and D1 interconnected in a mesh, we need to find the total number of mesh connections.

  • In a full mesh network, every node is connected to every other node.
  • The formula for the number of connections in a full mesh with n nodes is [n(n-1)/2].

With 4 nodes the number of connections is [4(4-1)/2] = [4*3/2] = 12/2 = 6.

Q: 3Which of the following statement(s) is/are correct?
I.  Metropolitan Area Network is a collection of Local Area Network.
II. Metropolitan Area Network support both data and voices transmission.

A

Only I

B

Only II

C

Both I and II

D

Neither I Nor II

Option C

A Metropolitan Area Network (MAN) is a computer network designed to cover a city or a large metropolitan area.
It is larger than a LAN but smaller than a WAN. A MAN can connect multiple Local Area Networks (LANs) located at different places within a city. Therefore, Statement I is True.
A MAN can carry different types of communication, including data and voice transmission.
For example, a metropolitan network can be used to provide internet connectivity as well as telephone or voice communication services across different locations. Therefore, Statement II is also True.

Q: 4Which of the following statements about twists in twisted pair cables is TRUE?

A

Increasing the number of twists per unit of length reduces the cable's electrical resistance.

B

More twists per unit of length in the cable increase signal distortion.

C

A higher twist rate gives better signal quality.

D

Fewer twists per unit of length in the cable result in better noise immunity.

Option C

Twisted pair cables are a type of electrical cable commonly used in networking and telecommunications.
Twisted pair cables consist of two insulated copper conductors twisted together to reduce electromagnetic interference (EMI) and crosstalk between adjacent pairs and improves overall signal quality.

high-twist-rate

Q: 5Choose WRONG statement about packet switching

A

It uses store and forward transmission

B

All packets follow the same route

C

Bandwidth is not wasted compared to circuit switching

D

Packets may arrive out of order

Option B

Packet Switching is a data transmission method where data is broken into small units called Packets, and each packet can travel independently across the network.

  • In packet switching, each packet is routed independently.
  • Unlike circuit switching, there is no fixed path, so packets may follow different routes.

Q: 6How many maximum links can be created in a mesh topology network of n computers?

A

N

B

N-1

C

N(N-1)

D

(N(N-1))/2

Option D

In a Mesh Topology, every computer is directly connected to every other computer. If there are N computers, each computer can connect to N-1 other computers.
At first, it may seem that the total number of links should be N(N-1). However, this counts each link twice.
For example, the connection between Computer A and Computer B is the same physical link as the connection between B and A. Therefore, we divide by 2.
Maximum Links = (N(N-1))/2

Q: 7In which topology, if there are n devices in a network each device has n-1 ports for connecting through cables

A

Mesh

B

Start

C

Bus

D

Ring

Option A

In computer networks, Topology defines how devices are connected to each other. Different topologies require different numbers of connections like ports and cables.
In a mesh topology, every device is directly connected to every other device. So, if there are n devices, each device must connect with (n-1) other devices. Therefore, each device needs (n-1) ports.

Q: 8Which of the following is not a LAN technology?

A

Fiber Distributed Data Interface

B

Token Ring

C

Ethernet

D

Frame Relay

Option D

A LAN is a network used to connect computers and other devices within a relatively small geographical area, such as a home, office, school, or building. Ethernet, Token Ring, and FDDI (Fiber Distributed Data Interface) are technologies that have been used for LAN communication. 
Ethernet is the most widely used LAN technology, while Token Ring and FDDI are older LAN technologies.
Frame Relay is a WAN (Wide Area Network) technology designed for communication over larger geographical areas. It uses virtual circuits to transfer data between different locations through a service providers network.

Q: 9Which standard is used to define protocol, host computer, port and path on the Internet?

A

IP address

B

Uniform Resource Locator (URL)

C

MAC address

D

POP address

Option B

When we access a webpage or any resource on the Internet, we use an address that tells the computer where to find it. This address is called a URL (Uniform Resource Locator). It includes several parts such as the protocol, host computer, port, and path.
URL example, https://www.surakuacademy.com/rpsc-vice-principal-iti-information-technology-paper-solution

PARTDESCRIPTIONEXAMPLE
ProtocolCommunication method such as HTTP, HTTPS, FTP.https
HostDomain name or IP address of the server.www.surakuacademy.com
PortConnection port, optional, tells which service or connection point to use. Common default ports are 80 for HTTP and 443 for HTTPS.443
PathThe specific file or page inside the website. Specifies the exact location or file on the host server./rpsc-vice-principal-iti-information-technology-paper-solution

Q: 10There are n stations in a slotted LAN. Each station attempts to transmit with a probability p in each time slot. What is the probability that only one station transmits in a given time slot? 

A

1 – (1 – p)n-1

B

(1 – p) n-1

C

n × p × (1 – p)n-1

D

p × (1 – p)n-1

Option C

In a slotted LAN, all n stations get a chance to send data in every time slot. Each station tries to send with a probability p. To find the probability that only one station sends data, we think about two things:

  • One station must send, this happens with probability p.
  • All the other (n – 1) stations must stay silent, each stays silent with probability 1-p, so together it becomes (1−p)n−1.

Because any one of the n stations could be the one that transmits successfully, we multiply by n. So, the probability that only one station transmits is n×p×(1−p)n−1.

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