Computer Networking MCQ | SET – 01
Here are some multiple choice questions about Computer Networking MCQ SET – 01 with their answers and explanations. Here are 20 questions for you:
Question 01: Which of the following protocols is used to send email?
A) FTP
B) HTTP
C) SMTP
D) ICMP
Answer: C) SMTP
Explanation: SMTP (Simple Mail Transfer Protocol) is the standard protocol used to send email.
Question 02: Which layer of the OSI model is responsible for routing and forwarding data?
A) physical layer
B) Network layer
C) transport layer
D) data link layer
Answer: B) Network Layer
Explanation: The network layer (Layer 3) in the OSI model is responsible for routing and forwarding data packets between different networks.
Question 03: Which device is used to connect multiple devices in a LAN?
A) Hub
B) Router
C) Switch
D) modem
Answer: C) Switch
Explanation: A switch is used to connect multiple devices within a LAN (Local Area Network) and helps in forwarding data packets to the desired device.
Question 04: Which of the following IP address is a private IP address?
A) 192.168.1.1
B) 8.8.8.8
C) 172.16.0.1
D) 151.101.1.69
Answer: A) 192.168.1.1
Explanation: The IP address range 192.168.0.0 to 192.168.255.255 is reserved for private networks.
Question 05: What is the purpose of DHCP (Dynamic Host Configuration Protocol)?
A) Assigning IP addresses to devices
B) encrypting data packets
C) Establishing a secure connection
D) resolving domain names to IP addresses.
Answer: A) Assigning IP addresses to devices
Explanation: DHCP is a protocol used to dynamically assign IP addresses to devices on a network.
Question 06: Which protocol is used for secure file transfer over the Internet?
A) FTP
B) ssh
C) POP3
D) IMAP
Answer: B) ssh
Explanation: SSH (Secure Shell) is a protocol that provides secure file transfer and remote access over unsecured networks.
Question 07: What is the default subnet mask for a Class C IP address?
A) 255.255.255.0
B) 255.255.0.0
C) 255.0.0.0
D) 0.0.0.0
Answer: A) 255.255.255.0
Explanation: The default subnet mask for a Class C IP address is 255.255.255.0.
Question 08: Which protocol is used to translate domain names into IP addresses?
A) DNS
B) FTP
C) HTTP
D) SMTP
Answer: A) DNS
Explanation: DNS (Domain Name System) is a protocol used to translate domain names into IP addresses.
Question 09: What is the maximum data rate supported by a standard Ethernet connection?
A) 10 Mbps
B) 100 Mbps
C) 1 Gbps
D) 10 Gbps
Answer: C) 1 Gbps
Explanation: A standard Ethernet connection supports a maximum data rate of 1 Gbps (Gigabit per second).
Question 10: Which of the following is a network protocol used to transfer files over the Internet?
A) HTTP
B) FTP
C) SMTP
D) DHCP
Answer: B) FTP
Explanation: FTP (File Transfer Protocol) is a standard network protocol used to transfer files between clients and servers over a computer network.
Question 11: Which layer of the OSI model is responsible for routing and forwarding packets?
A) physical layer
B) Network layer
C) transport layer
D) data link layer
Answer: B) Network Layer
Explanation: The network layer (Layer 3) of the OSI model is responsible for routing and forwarding packets between different networks.
Question 12: What is the purpose of MAC address?
A) Uniquely identifying a device on a network
B) Providing internet connectivity
C) To encrypt network traffic.
D) To determine network latency.
Answer: A) Uniquely identifying a device on a network
Explanation: A MAC (Media Access Control) address is a unique identifier assigned to identify a network interface card (NIC) on a network.
Question 13: Which of the following devices operates at the network layer of the OSI model?
A) Hub
B) switch
C) Router
D) bridge
Answer: C) Router
Explanation: Routers operate at the network layer (Layer 3) of the OSI model and are responsible for routing packets between different networks.
Question 14: What is the purpose of DNS in computer networks?
A) To convert IP address to domain name
B) To establish a secure encrypted connection
C) To manage network traffic congestion.
D) Providing physical network connectivity.
Answer: A) To convert IP address into domain name.
Explanation: DNS (Domain Name System) is responsible for translating human-readable domain names into their corresponding IP addresses.
Question 15: Which of the following protocols is used for email transmission?
A) SMTP
B) HTTP
C) FTP
D)SNMP
Answer: A) SMTP
Explanation: SMTP (Simple Mail Transfer Protocol) is the standard protocol used to send and receive email messages over the Internet.
Question 16: Which networking device works at the data link layer of the OSI model?
A) Router
B) switch
C) Hub
D) firewall
Answer: B) Switch
Explanation: Switches operate at the data link layer (Layer 2) of the OSI model and are responsible for forwarding data packets within the local network.
Question 17: Which subnet mask is used 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
Answer: C) 255.255.255.0
Explanation: Class C IP addresses use a subnet mask of 255.255.255.0, which allows 254 host addresses within the network.
Question 18: Which of the following protocols is used to dynamically assign IP addresses to network devices?
A) DNS
B) DHCP
C)SNMP
D) ARP
Answer: B) DHCP
Explanation: DHCP (Dynamic Host Configuration Protocol) is used to dynamically assign IP addresses to network devices, eliminating the need for manual configuration.
Question 19: Which protocol is responsible for assigning IP addresses to devices on the network?
A) DHCP
B) DNS
C) FTP
D) HTTP
Answer: A) DHCP
Explanation: Dynamic Host Configuration Protocol (DHCP) is used to automatically assign IP addresses to devices on a network.
Question 20: What is the purpose of subnet mask in networking?
A) It identifies the network portion of the IP address.
B) It encrypts data for secure transmission.
C) It resolves domain names into IP addresses.
D) It determines the default gateway for the network.
Answer: A) It identifies the network portion of the IP address.
Explanation: A subnet mask is used to determine the network portion of an IP address by separating it from the host portion.
Conclusion:
Please note that these questions cover some computer networking concepts in computer science. I hope the explanations help clear the concepts for you. If you have a specific topic or area you would like to learn further about, don’t hesitate to ask!