Computer Networks MCQ & Objective Questions
Understanding Computer Networks is crucial for students preparing for school and competitive exams. This topic not only forms a significant part of the curriculum but also enhances your grasp of how data communication works. Practicing MCQs and objective questions related to Computer Networks can significantly improve your exam performance by familiarizing you with important concepts and question formats.
What You Will Practise Here
Fundamentals of Computer Networks
Types of Networks: LAN, WAN, and MAN
Network Topologies: Star, Ring, Bus, and Mesh
Protocols and Standards: TCP/IP, HTTP, FTP
Network Devices: Routers, Switches, and Hubs
IP Addressing and Subnetting
Common Network Security Measures
Exam Relevance
Computer Networks is a vital topic in various examinations such as CBSE, State Boards, NEET, and JEE. Questions often focus on definitions, key concepts, and practical applications of network theories. You may encounter multiple-choice questions that test your understanding of network types, protocols, and devices, making it essential to master this area for effective exam preparation.
Common Mistakes Students Make
Confusing different types of networks and their characteristics.
Misunderstanding network protocols and their functions.
Overlooking the importance of IP addressing and subnetting.
Failing to recognize the role of network devices in data transmission.
FAQs
Question: What are the main types of computer networks?Answer: The main types of computer networks include Local Area Network (LAN), Wide Area Network (WAN), and Metropolitan Area Network (MAN).
Question: Why is subnetting important in computer networks?Answer: Subnetting helps in efficient IP address management and improves network performance and security.
Now is the time to enhance your understanding of Computer Networks! Dive into our practice MCQs and test your knowledge to ensure you are well-prepared for your exams. Remember, consistent practice with objective questions will lead to better scores and a clearer grasp of the subject.
Q. What does the acronym 'TCP' stand for?
A.
Transmission Control Protocol
B.
Transfer Control Protocol
C.
Transport Communication Protocol
D.
Transmission Communication Protocol
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Solution
TCP stands for Transmission Control Protocol, which is used for reliable communication over a network.
Correct Answer:
A
— Transmission Control Protocol
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Q. What does the acronym URI stand for in the context of web protocols?
A.
Uniform Resource Identifier
B.
Universal Resource Indicator
C.
Uniform Resource Interface
D.
Universal Resource Identifier
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Solution
URI stands for Uniform Resource Identifier, which is a string used to identify a resource on the Internet.
Correct Answer:
A
— Uniform Resource Identifier
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Q. What does the acronym URL stand for?
A.
Uniform Resource Locator
B.
Universal Resource Link
C.
Uniform Resource Link
D.
Universal Resource Locator
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Solution
URL stands for Uniform Resource Locator, which is the address used to access resources on the internet.
Correct Answer:
A
— Uniform Resource Locator
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Q. What does the status code 404 indicate in an HTTP response?
A.
OK
B.
Created
C.
Not Found
D.
Bad Request
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Solution
The status code 404 indicates that the requested resource was not found on the server.
Correct Answer:
C
— Not Found
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Q. What does the status code 404 indicate in HTTP?
A.
OK
B.
Created
C.
Not Found
D.
Bad Request
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Solution
The status code 404 indicates that the requested resource was not found on the server.
Correct Answer:
C
— Not Found
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Q. What does the term 'collision domain' refer to?
A.
A network segment where data packets can collide
B.
A type of network protocol
C.
A security threat in networking
D.
A method of data encryption
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Solution
A collision domain is a network segment where data packets can collide, typically in a shared network environment.
Correct Answer:
A
— A network segment where data packets can collide
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Q. What does the term 'subnetting' refer to in IP addressing?
A.
Dividing a network into smaller networks
B.
Combining multiple networks into one
C.
Assigning static IP addresses
D.
Changing the default gateway
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Solution
Subnetting refers to the practice of dividing a larger network into smaller, more manageable subnetworks.
Correct Answer:
A
— Dividing a network into smaller networks
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Q. What does the term 'subnetting' refer to?
A.
Dividing a network into smaller networks
B.
Combining multiple networks into one
C.
Changing the IP address of a device
D.
None of the above
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Solution
Subnetting refers to the practice of dividing a larger network into smaller, more manageable sub-networks.
Correct Answer:
A
— Dividing a network into smaller networks
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Q. What does the term 'supernetting' refer to?
A.
Combining multiple subnets into a larger network
B.
Dividing a network into smaller subnets
C.
A method of IP address allocation
D.
A type of routing protocol
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Solution
Supernetting is the process of aggregating multiple contiguous subnets into a single larger network to simplify routing.
Correct Answer:
A
— Combining multiple subnets into a larger network
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Q. What is the broadcast address for the subnet 192.168.1.0/24?
A.
192.168.1.255
B.
192.168.1.0
C.
192.168.1.1
D.
192.168.1.254
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Solution
The broadcast address for the subnet 192.168.1.0/24 is 192.168.1.255, used to send data to all hosts in that subnet.
Correct Answer:
A
— 192.168.1.255
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Q. What is the broadcast address for the subnet 192.168.10.0/24?
A.
192.168.10.0
B.
192.168.10.255
C.
192.168.10.1
D.
192.168.10.128
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Solution
The broadcast address for a /24 subnet is the last address in the range, which is 192.168.10.255.
Correct Answer:
B
— 192.168.10.255
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Q. What is the CIDR notation for a subnet mask of 255.255.255.128?
A.
/25
B.
/26
C.
/27
D.
/24
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Solution
The CIDR notation for a subnet mask of 255.255.255.128 is /25, indicating that the first 25 bits are used for the network.
Correct Answer:
A
— /25
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Q. What is the CIDR notation for a subnet mask of 255.255.255.192?
A.
/24
B.
/26
C.
/28
D.
/30
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Solution
The CIDR notation for a subnet mask of 255.255.255.192 is /26, indicating 26 bits are used for the network part.
Correct Answer:
B
— /26
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Q. What is the CIDR notation for a subnet mask of 255.255.255.224?
A.
/24
B.
/25
C.
/26
D.
/27
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Solution
The subnet mask 255.255.255.224 corresponds to a CIDR notation of /27, which means 27 bits are used for the network part.
Correct Answer:
D
— /27
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Q. What is the CIDR notation for a subnet mask of 255.255.255.248?
A.
/24
B.
/25
C.
/26
D.
/29
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Solution
The subnet mask 255.255.255.248 corresponds to /29, as it has 29 bits set to 1.
Correct Answer:
D
— /29
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Q. What is the default port number for HTTP?
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Solution
The default port number for HTTP is 80.
Correct Answer:
C
— 80
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Q. What is the default subnet mask for a Class C IP address?
A.
255.0.0.0
B.
255.255.0.0
C.
255.255.255.0
D.
255.255.255.255
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Solution
The default subnet mask for a Class C IP address is 255.255.255.0, allowing for 256 addresses in the subnet.
Correct Answer:
C
— 255.255.255.0
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Q. What is the first usable IP address in the subnet 10.0.0.0/22?
A.
10.0.0.1
B.
10.0.0.0
C.
10.0.3.255
D.
10.0.0.2
Show solution
Solution
The first usable IP address in the subnet 10.0.0.0/22 is 10.0.0.1, as 10.0.0.0 is the network address.
Correct Answer:
A
— 10.0.0.1
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Q. What is the first usable IP address in the subnet 10.0.0.0/24?
A.
10.0.0.0
B.
10.0.0.1
C.
10.0.0.255
D.
10.0.1.0
Show solution
Solution
The first usable IP address in the subnet 10.0.0.0/24 is 10.0.0.1, as 10.0.0.0 is the network address.
Correct Answer:
B
— 10.0.0.1
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Q. What is the first valid host address in the subnet 192.168.1.0/24?
A.
192.168.1.0
B.
192.168.1.1
C.
192.168.1.255
D.
192.168.1.254
Show solution
Solution
In the subnet 192.168.1.0/24, the first valid host address is 192.168.1.1, as 192.168.1.0 is the network address.
Correct Answer:
B
— 192.168.1.1
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Q. What is the function of a default gateway in a network?
A.
To connect devices within the same subnet
B.
To route traffic to external networks
C.
To assign IP addresses dynamically
D.
To filter network traffic
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Solution
A default gateway routes traffic from a local network to external networks, allowing devices to communicate outside their subnet.
Correct Answer:
B
— To route traffic to external networks
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Q. What is the function of a default gateway in a subnet?
A.
To route traffic within the subnet
B.
To connect to the internet
C.
To assign IP addresses
D.
To manage network security
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Solution
The default gateway is used to route traffic from a local subnet to destinations outside the subnet, typically to the internet.
Correct Answer:
B
— To connect to the internet
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Q. What is the function of a router in a network?
A.
To connect devices within the same local area network
B.
To forward data packets between different networks
C.
To provide a wireless connection
D.
To manage IP address assignments
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Solution
A router forwards data packets between different networks, making it essential for inter-network communication.
Correct Answer:
B
— To forward data packets between different networks
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Q. What is the function of the 'Content-Type' header in an HTTP response?
A.
To specify the server type
B.
To indicate the type of content being sent
C.
To define the encoding type
D.
To manage cache settings
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Solution
The 'Content-Type' header in an HTTP response indicates the media type of the resource being sent, allowing the client to understand how to process it.
Correct Answer:
B
— To indicate the type of content being sent
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Q. What is the last valid host address in the subnet 10.0.0.0/8?
A.
10.0.0.255
B.
10.255.255.254
C.
10.0.0.0
D.
10.255.255.255
Show solution
Solution
In the subnet 10.0.0.0/8, the last valid host address is 10.255.255.254, as 10.255.255.255 is the broadcast address.
Correct Answer:
B
— 10.255.255.254
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Q. What is the main advantage of using HTTPS over HTTP?
A.
Faster loading times
B.
Data encryption
C.
Lower latency
D.
Simpler implementation
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Solution
HTTPS provides data encryption, ensuring that the data transmitted between the client and server is secure from eavesdropping.
Correct Answer:
B
— Data encryption
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Q. What is the main benefit of using Variable Length Subnet Masking (VLSM)?
A.
Reduces the number of subnets
B.
Allows for more efficient use of IP addresses
C.
Simplifies routing tables
D.
Increases broadcast domains
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Solution
VLSM allows for subnets of different sizes, enabling more efficient use of IP addresses based on the needs of each subnet.
Correct Answer:
B
— Allows for more efficient use of IP addresses
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Q. What is the main difference between HTTP and HTTPS?
A.
HTTP is faster
B.
HTTPS is encrypted
C.
HTTP uses less bandwidth
D.
HTTPS is for local networks only
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Solution
The main difference is that HTTPS is encrypted, providing a secure communication channel over the internet.
Correct Answer:
B
— HTTPS is encrypted
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Q. What is the main function of a switch in a network?
A.
To connect different networks
B.
To filter and forward data to specific devices within the same network
C.
To provide internet access
D.
To manage network security
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Solution
A switch filters and forwards data to specific devices within the same network, improving network efficiency.
Correct Answer:
B
— To filter and forward data to specific devices within the same network
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Q. What is the main function of a web browser in relation to HTTP?
A.
To store data
B.
To interpret HTML
C.
To manage network connections
D.
To encrypt data
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Solution
The main function of a web browser in relation to HTTP is to interpret HTML and render web pages for users.
Correct Answer:
B
— To interpret HTML
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