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. Which of the following is NOT a function of the Application layer in the OSI model?
A.
File transfer
B.
Email services
C.
Data encryption
D.
Routing packets
Show solution
Solution
Routing packets is not a function of the Application layer; it is handled by the Network layer.
Correct Answer:
D
— Routing packets
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Q. Which of the following is NOT a function of the Application Layer?
A.
File transfer
B.
Email services
C.
Data routing
D.
Web services
Show solution
Solution
Data routing is not a function of the Application Layer; it is handled by the Network Layer.
Correct Answer:
C
— Data routing
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Q. Which of the following is NOT a function of the Data Link Layer?
A.
Framing
B.
Physical addressing
C.
Routing
D.
Error detection
Show solution
Solution
Routing is not a function of the Data Link Layer; it is performed by the Network Layer.
Correct Answer:
C
— Routing
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Q. Which of the following is NOT a function of the Network Layer?
A.
Packet forwarding
B.
Logical addressing
C.
Error recovery
D.
Routing
Show solution
Solution
Error recovery is not a function of the Network Layer; it is typically handled by the Transport Layer.
Correct Answer:
C
— Error recovery
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Q. Which of the following is NOT a function of the Transport Layer?
A.
Segmentation of data
B.
Flow control
C.
Routing of packets
D.
Error detection
Show solution
Solution
Routing of packets is not a function of the Transport Layer; it is handled by the Network Layer.
Correct Answer:
C
— Routing of packets
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Q. Which of the following is NOT a layer in the OSI model?
A.
Transport Layer
B.
Network Layer
C.
Internet Layer
D.
Session Layer
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Solution
The Internet Layer is part of the TCP/IP model, not the OSI model.
Correct Answer:
C
— Internet Layer
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Q. Which of the following is NOT a type of transmission media?
A.
Twisted Pair
B.
Fiber Optic
C.
Wireless
D.
Network Protocol
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Solution
Network Protocol is not a type of transmission media; it refers to the rules governing data communication.
Correct Answer:
D
— Network Protocol
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Q. Which of the following is NOT a valid Class A IP address?
A.
10.0.0.1
B.
127.0.0.1
C.
192.168.1.1
D.
100.100.100.100
Show solution
Solution
192.168.1.1 is a Class C IP address, while the others are Class A addresses.
Correct Answer:
C
— 192.168.1.1
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Q. Which of the following is NOT a valid HTTP status code?
A.
200
B.
301
C.
404
D.
5050
Show solution
Solution
5050 is not a valid HTTP status code; valid codes are typically three digits, such as 200, 301, and 404.
Correct Answer:
D
— 5050
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Q. Which of the following is NOT a valid IPv4 address?
A.
192.168.1.1
B.
256.100.50.25
C.
10.0.0.1
D.
172.16.0.5
Show solution
Solution
The address 256.100.50.25 is invalid because the octets in an IPv4 address must be between 0 and 255.
Correct Answer:
B
— 256.100.50.25
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Q. Which of the following is NOT a valid subnet mask?
A.
255.255.255.0
B.
255.255.255.128
C.
255.255.255.256
D.
255.255.255.192
Show solution
Solution
A subnet mask cannot have a value greater than 255 in any octet, making 255.255.255.256 invalid.
Correct Answer:
C
— 255.255.255.256
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Q. Which of the following is the correct subnet mask for a network that has 14 usable IP addresses?
A.
255.255.255.240
B.
255.255.255.224
C.
255.255.255.252
D.
255.255.255.248
Show solution
Solution
A subnet mask of 255.255.255.240 (/28) provides 16 total addresses, allowing for 14 usable IP addresses.
Correct Answer:
A
— 255.255.255.240
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Q. Which of the following protocols is used for dynamic IP address allocation?
A.
DHCP
B.
DNS
C.
ARP
D.
ICMP
Show solution
Solution
DHCP (Dynamic Host Configuration Protocol) is used for dynamically allocating IP addresses to devices on a network.
Correct Answer:
A
— DHCP
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Q. Which of the following protocols is used for email transmission?
A.
HTTP
B.
FTP
C.
SMTP
D.
SNMP
Show solution
Solution
SMTP (Simple Mail Transfer Protocol) is used for sending emails.
Correct Answer:
C
— SMTP
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Q. Which of the following protocols is used for error detection in data transmission?
A.
TCP
B.
UDP
C.
ICMP
D.
ARP
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Solution
TCP (Transmission Control Protocol) includes mechanisms for error detection and correction in data transmission.
Correct Answer:
A
— TCP
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Q. Which of the following protocols is used for secure communication over the web?
A.
HTTP
B.
FTP
C.
HTTPS
D.
SMTP
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Solution
HTTPS (HTTP Secure) is the protocol used for secure communication over the web, utilizing SSL/TLS for encryption.
Correct Answer:
C
— HTTPS
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Q. Which of the following protocols is used for sending emails?
A.
HTTP
B.
FTP
C.
SMTP
D.
SNMP
Show solution
Solution
SMTP (Simple Mail Transfer Protocol) is the protocol used for sending emails.
Correct Answer:
C
— SMTP
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Q. Which of the following protocols is used to secure HTTP traffic?
A.
FTP
B.
SMTP
C.
HTTPS
D.
Telnet
Show solution
Solution
HTTPS is the secure version of HTTP, using encryption protocols like SSL/TLS to secure data transmitted over the web.
Correct Answer:
C
— HTTPS
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Q. Which of the following protocols is used to send emails?
A.
HTTP
B.
FTP
C.
SMTP
D.
SNMP
Show solution
Solution
SMTP (Simple Mail Transfer Protocol) is used to send emails, while HTTP is used for web traffic.
Correct Answer:
C
— SMTP
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Q. Which of the following protocols operates at the Application Layer of the TCP/IP model?
A.
IP
B.
TCP
C.
UDP
D.
DNS
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Solution
DNS (Domain Name System) operates at the Application Layer of the TCP/IP model.
Correct Answer:
D
— DNS
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Q. Which OSI layer is responsible for error detection and correction?
A.
Session Layer
B.
Transport Layer
C.
Data Link Layer
D.
Physical Layer
Show solution
Solution
The Data Link Layer (Layer 2) is responsible for error detection and correction to ensure reliable data transfer.
Correct Answer:
C
— Data Link Layer
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Q. Which OSI layer is responsible for establishing, managing, and terminating sessions?
A.
Transport Layer
B.
Session Layer
C.
Presentation Layer
D.
Application Layer
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Solution
The Session Layer (Layer 5) is responsible for establishing, managing, and terminating sessions between applications.
Correct Answer:
B
— Session Layer
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Q. Which port is commonly used by HTTP?
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Solution
HTTP commonly uses port 80 for communication.
Correct Answer:
C
— 80
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Q. Which protocol is commonly used for dynamic IP address allocation?
A.
ARP
B.
RARP
C.
DHCP
D.
ICMP
Show solution
Solution
DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses to devices on a network.
Correct Answer:
C
— DHCP
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Q. Which protocol is commonly used for dynamic IP address assignment?
A.
DHCP
B.
DNS
C.
HTTP
D.
FTP
Show solution
Solution
DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses to devices on a network.
Correct Answer:
A
— DHCP
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Q. Which protocol is commonly used for sending emails?
A.
HTTP
B.
FTP
C.
SMTP
D.
IMAP
Show solution
Solution
SMTP (Simple Mail Transfer Protocol) is the protocol commonly used for sending emails over the internet.
Correct Answer:
C
— SMTP
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Q. Which protocol is commonly used to secure HTTP traffic?
A.
FTP
B.
SMTP
C.
HTTPS
D.
Telnet
Show solution
Solution
HTTPS (Hypertext Transfer Protocol Secure) is used to secure HTTP traffic by encrypting the data transmitted between the client and server.
Correct Answer:
C
— HTTPS
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Q. Which protocol is commonly used to transfer files over the web?
A.
FTP
B.
SMTP
C.
HTTP
D.
SNMP
Show solution
Solution
HTTP (Hypertext Transfer Protocol) is the primary protocol used for transferring files and data over the web.
Correct Answer:
C
— HTTP
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Q. Which protocol is commonly used to transfer web pages over the Internet?
A.
FTP
B.
SMTP
C.
HTTP
D.
SNMP
Show solution
Solution
HTTP (Hypertext Transfer Protocol) is the protocol used to transfer web pages over the Internet.
Correct Answer:
C
— HTTP
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Q. Which protocol is primarily used for dynamic IP address allocation?
A.
DHCP
B.
DNS
C.
ARP
D.
ICMP
Show solution
Solution
DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses to devices on a network.
Correct Answer:
A
— DHCP
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