- 1. Computer communications, also known as computer networks, refer to the interconnection of multiple computing devices for the purpose of sharing data and resources. Networks can be classified based on their geographical scope, such as LANs (Local Area Networks) which cover a small area like a single building, or WANs (Wide Area Networks) which span larger distances across cities or even countries. Communication in networks is facilitated by various hardware components such as routers, switches, and cables, and is governed by communication protocols like TCP/IP. The evolution of computer networks has revolutionized the way we access information and communicate with others, enabling tasks like online shopping, social networking, and video streaming. Security is a major concern in computer communications, as networks are susceptible to malicious attacks and data breaches. As technology continues to advance, the field of computer communications plays a crucial role in shaping the digital landscape of the modern world.
Which of the following protocols is used for sending emails?
A) TCP (Transmission Control Protocol)
B) SMTP (Simple Mail Transfer Protocol)
C) FTP (File Transfer Protocol)
D) HTTP (Hypertext Transfer Protocol)
- 2. What does DHCP stand for in networking?
A) Domain Host Control Protocol
B) Data Handling Control Protocol
C) Digital Host Configuration Protocol
D) Dynamic Host Configuration Protocol
- 3. What is the purpose of a router in a network?
A) To connect multiple networks and forward data packets.
B) To protect network devices from malware.
C) To store and manage data on a network server.
D) To display web pages on the internet.
- 4. What is the purpose of DNS in computer networks?
A) To provide secure remote access to the network.
B) To monitor network traffic for security threats.
C) To translate domain names to IP addresses.
D) To compress data before transmission.
- 5. What is the primary function of a firewall in a network?
A) To convert IP addresses to domain names.
B) To deliver emails to the recipient's server.
C) To monitor and control incoming and outgoing network traffic based on predefined security rules.
D) To establish secure communications between networks.
- 6. What does LAN stand for in networking?
A) Local Area Network
B) Link Access Node
C) Large Area Network
D) Longitudinal Access Network
- 7. Which protocol is used for transferring files over the internet?
A) DNS (Domain Name System)
B) FTP (File Transfer Protocol)
C) SMTP (Simple Mail Transfer Protocol)
D) HTTP (Hypertext Transfer Protocol)
- 8. What is the function of ARP in networking?
A) To establish secure VPN connections.
B) To manage domain names and registration.
C) To control network traffic flow.
D) To map IP addresses to MAC addresses.
- 9. Which device is used to connect multiple computers in a LAN?
A) Modem
B) Gateway
C) Switch
D) Repeater
- 10. What does WAN stand for in computer networking?
A) Wireless Access Network
B) Web Application Network
C) Wide Area Network
D) Waterfront Area Network
- 11. Which networking device forwards data packets between networks?
A) Router
B) Switch
C) Firewall
D) Bridge
- 12. Which layer of the OSI model handles reliable transmission of data?
A) Physical layer
B) Session layer
C) Network layer
D) Transport layer
- 13. What is the maximum data transmission speed of the Cat 6 Ethernet cable?
A) 100 Mbps
B) 10 Gbps
C) 1000 Mbps
D) 1 Gbps
- 14. What does IP stand for in networking?
A) Internet Protocol
B) Information Packet
C) Internal Protocol
D) Internet Port
- 15. Which protocol is used for resolving domain names to IP addresses?
A) DNS (Domain Name System)
B) SMTP (Simple Mail Transfer Protocol)
C) HTTP (Hypertext Transfer Protocol)
D) FTP (File Transfer Protocol)
- 16. Which of the following is a wireless communication standard?
A) SCSI
B) Ethernet
C) Wi-Fi
D) USB
- 17. What does VPN stand for in networking?
A) Virtual Public Network
B) Visual Pathway Network
C) Very Personal Network
D) Virtual Private Network
- 18. Which networking technology allows devices to communicate wirelessly over short distances?
A) Bluetooth
B) NFC (Near Field Communication)
C) Satellite Communication
D) LTE (Long-Term Evolution)
- 19. Which of the following is a wired communication technology commonly used in local area networks?
A) Ethernet
B) Bluetooth
C) LTE
D) Wi-Fi
- 20. Which network protocol is used to retrieve email from a mail server?
A) HTTP
B) SMTP
C) FTP
D) POP3
- 21. Which protocol is commonly used for securely accessing remote servers over an encrypted connection?
A) SSH
B) RDP
C) FTP
D) Telnet
- 22. Which networking component is used to connect multiple devices in a network and can 'broadcast' data to all connected devices?
A) Firewall
B) Switch
C) Router
D) Hub
- 23. Which type of network operates within a single geographic area?
A) CAN
B) WAN
C) LAN
D) MAN
- 24. What does 'URL' stand for?
A) Uniform Resource Locator
B) User Reboot Log
C) Universal Record Library
D) United Routing Logic
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