- 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) HTTP (Hypertext Transfer Protocol)
B) FTP (File Transfer Protocol)
C) TCP (Transmission Control Protocol)
D) SMTP (Simple Mail Transfer Protocol)
- 2. What does DHCP stand for in networking?
A) Digital Host Configuration Protocol
B) Data Handling Control Protocol
C) Domain Host Control 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 display web pages on the internet.
C) To protect network devices from malware.
D) To store and manage data on a network server.
- 4. What is the purpose of DNS in computer networks?
A) To translate domain names to IP addresses.
B) To provide secure remote access to the network.
C) To monitor network traffic for security threats.
D) To compress data before transmission.
- 5. What is the primary function of a firewall in a network?
A) To monitor and control incoming and outgoing network traffic based on predefined security rules.
B) To establish secure communications between networks.
C) To convert IP addresses to domain names.
D) To deliver emails to the recipient's server.
- 6. What does LAN stand for in networking?
A) Large Area Network
B) Longitudinal Access Network
C) Link Access Node
D) Local Area Network
- 7. Which protocol is used for transferring files over the internet?
A) HTTP (Hypertext Transfer Protocol)
B) FTP (File Transfer Protocol)
C) DNS (Domain Name System)
D) SMTP (Simple Mail Transfer Protocol)
- 8. What is the function of ARP in networking?
A) To map IP addresses to MAC addresses.
B) To control network traffic flow.
C) To manage domain names and registration.
D) To establish secure VPN connections.
- 9. Which device is used to connect multiple computers in a LAN?
A) Repeater
B) Modem
C) Switch
D) Gateway
- 10. What does WAN stand for in computer networking?
A) Wide Area Network
B) Wireless Access Network
C) Waterfront Area Network
D) Web Application Network
- 11. Which networking device forwards data packets between networks?
A) Switch
B) Firewall
C) Router
D) Bridge
- 12. Which layer of the OSI model handles reliable transmission of data?
A) Transport layer
B) Network layer
C) Session layer
D) Physical layer
- 13. What is the maximum data transmission speed of the Cat 6 Ethernet cable?
A) 1000 Mbps
B) 1 Gbps
C) 10 Gbps
D) 100 Mbps
- 14. What does IP stand for in networking?
A) Information Packet
B) Internal Protocol
C) Internet Protocol
D) Internet Port
- 15. Which protocol is used for resolving domain names to IP addresses?
A) SMTP (Simple Mail Transfer Protocol)
B) DNS (Domain Name System)
C) FTP (File Transfer Protocol)
D) HTTP (Hypertext Transfer Protocol)
- 16. Which of the following is a wireless communication standard?
A) USB
B) Wi-Fi
C) Ethernet
D) SCSI
- 17. What does VPN stand for in networking?
A) Visual Pathway Network
B) Virtual Public Network
C) Virtual Private Network
D) Very Personal Network
- 18. Which networking technology allows devices to communicate wirelessly over short distances?
A) Bluetooth
B) LTE (Long-Term Evolution)
C) Satellite Communication
D) NFC (Near Field Communication)
- 19. Which of the following is a wired communication technology commonly used in local area networks?
A) Wi-Fi
B) Ethernet
C) LTE
D) Bluetooth
- 20. Which network protocol is used to retrieve email from a mail server?
A) SMTP
B) POP3
C) HTTP
D) FTP
- 21. Which protocol is commonly used for securely accessing remote servers over an encrypted connection?
A) Telnet
B) FTP
C) SSH
D) RDP
- 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) Hub
D) Router
- 23. Which type of network operates within a single geographic area?
A) WAN
B) MAN
C) CAN
D) LAN
- 24. What does 'URL' stand for?
A) United Routing Logic
B) Universal Record Library
C) Uniform Resource Locator
D) User Reboot Log
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