Computer Networking MCQ | SET – 02
Here are some multiple choice questions about Computer Networking MCQ | SET – 02 along with their answers and explanations. Here are 20 Questions for you:
Question 1. Which of the following devices operates at the Data Link layer of the OSI model?
a) Hub
b) Switch
c) Router
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 a local area network (LAN).
Question 2. What is the purpose of DHCP (Dynamic Host Configuration Protocol)?
a) Assigning IP addresses to devices
b) Establishing secure connections
c) Transferring files between computers
d) Resolving domain names to IP addresses
Answer: a) Assigning IP addresses to devices
Explanation: DHCP is used to automatically assign IP addresses, as well as other network configuration parameters, to devices on a network.
Question 3. Which of the following protocols is used to retrieve email from a mail server?
a) SMTP
b) POP3
c) FTP
d) HTTP
Answer: b) POP3
Explanation: POP3 (Post Office Protocol version 3) is a standard protocol used for receiving email from a remote mail server.
Question 4. What is the purpose of DNS (Domain Name System) in networking?
a) Transferring files between computers
b) Assigning IP addresses to devices
c) Resolving domain names to IP addresses
d) Establishing secure connections
Answer: c) Resolving domain names to IP addresses
Explanation: DNS translates human-readable domain names into their corresponding IP addresses, enabling users to access websites using domain names.
Question 5. Which of the following is a private IP address?
a) 10.0.0.1
b) 172.16.0.1
c) 192.168.0.1
d) 8.8.8.8
Answer: c) 192.168.0.1
Explanation: The IP address range 192.168.0.0 to 192.168.255.255 is reserved for private networks, such as home or office networks.
Question 6. What is the default subnet mask for a Class C IP address?
a) 255.255.255.0
b) 255.0.0.0
c) 255.255.0.0
d) 255.0.0.255
Answer: a) 255.255.255.0
Explanation: Class C IP addresses have a default subnet mask of 255.255.255.0, allowing for up to 254 hosts in a network.
Question 7. Which protocol is used to transfer files between a local computer and a remote server?
a) FTP
b) HTTP
c) SMTP
d) DHCP
Answer: a) FTP
Explanation: FTP (File Transfer Protocol) is a standard protocol used for transferring files between a local computer and a remote server.
Question 8. What is the purpose of NAT (Network Address Translation)?
a) Encrypting network traffic
b) Assigning IP addresses to devices
c) Resolving domain names to IP addresses
d) Allowing multiple devices to share a single public IP address
Answer: d) Allowing multiple devices to share a single public IP address
Explanation: NAT allows multiple devices on a private network to share a single public IP address, enabling them to access the Internet.
Question 9. Which of the following is a reliable transport protocol that provides error detection and correction?
a) UDP
b) TCP
c) ICMP
d) ARP
Answer: b) TCP
Explanation: TCP (Transmission Control Protocol) is a reliable transport protocol that ensures error-free and ordered delivery of data packets.
Question 10. Which layer of the OSI model is responsible for establishing and terminating connections between network devices?
a) Physical layer
b) Network layer
c) Transport layer
d) Session layer
Answer: d) Session layer
Explanation: The Session layer (Layer 5) of the OSI model is responsible for establishing and terminating connections between network devices.
Question 11. What is the maximum transmission speed of 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 transmission speed of 1 Gbps (Gigabits per second).
Question 12. Which of the following devices operates at the Network layer of the OSI model?
a) Bridge
b) Router
c) Repeater
d) Modem
Answer: b) Router
Explanation: Routers operate at the Network layer (Layer 3) of the OSI model and are responsible for routing data packets between different networks.
Question 13. What is the purpose of a firewall in networking?
a) Filtering network traffic based on predefined rules
b) Encrypting data packets for secure transmission
c) Assigning IP addresses to devices
d) Resolving domain names to IP addresses
Answer: a) Filtering network traffic based on predefined rules
Explanation: Firewalls are network security devices that filter incoming and outgoing network traffic based on predefined rules, helping to protect against unauthorized access and network threats.
Question 14. Which protocol is used for secure communication over the web?
a) HTTP
b) FTP
c) HTTPS
d) SMTP
Answer: c) HTTPS
Explanation: HTTPS (Hypertext Transfer Protocol Secure) is a secure version of HTTP that uses encryption to ensure secure communication between web servers and clients.
Question 15. Which network topology requires a terminator at the end of the cable?
a) Bus topology
b) Star topology
c) Ring topology
d) Mesh topology
Answer: a) Bus topology
Explanation: In a bus topology, all devices are connected to a single cable, and a terminator is required at each end of the cable to prevent signal reflections.
Question 16. Which of the following is not a wireless communication standard?
a) Bluetooth
b) Ethernet
c) Wi-Fi
d) NFC
Answer: b) Ethernet
Explanation: Ethernet is a wired communication standard commonly used in local area networks (LANs) and does not refer to wireless communication.
Question 17. What is the purpose of ICMP (Internet Control Message Protocol)?
a) Resolving domain names to IP addresses
b) Transferring files between computers
c) Testing network connectivity and reporting errors
d) Assigning IP addresses to devices
Answer: c) Testing network connectivity and reporting errors
Explanation: ICMP is a network protocol used for testing network connectivity, diagnosing network-related issues, and reporting errors back to the source.
Question 18. Which of the following is a top-level domain (TLD)?
a) .com
b) .exe
c) .jpg
d) .mp3
Answer: a) .com
Explanation: .com is a top-level domain (TLD) commonly used for commercial websites.
Question 19. Which protocol is used to resolve MAC addresses to IP addresses in a local network?
a) ARP
b) DHCP
c) DNS
d) ICMP
Answer: a) ARP
Explanation: ARP (Address Resolution Protocol) is used to resolve MAC addresses to IP addresses in a local network.
Question 20. Which of the following is a private IP address range?
a) 172.16.0.0 – 172.31.255.255
b) 192.0.0.0 – 192.0.0.255
c) 10.0.0.0 – 10.255.255.255
d) 169.254.0.0 – 169.254.255.255
Answer: a) 172.16.0.0 – 172.31.255.255
Explanation: The IP address range 172.16.0.0 – 172.31.255.255 is reserved for private networks and is commonly used in organizations.
Conclusion:
Please note that these questions cover some Computer Networking concepts in computer science. I hope the explanations help clarify the concepts for you. If you have any specific topics or areas you’d like to explore further, feel free to ask!