Q.1 Which of the following best defines a computer network?
A single computer system
A collection of interconnected devices
A standalone software program
A local printer connection
Explanation - A computer network is formed when multiple computing devices are interconnected to share resources and data.
Correct answer is: A collection of interconnected devices
Q.2 Which device is primarily used to connect multiple computers within a LAN?
Router
Switch
Modem
Firewall
Explanation - A switch connects multiple computers within a LAN and forwards data to the intended recipient.
Correct answer is: Switch
Q.3 What does LAN stand for?
Large Area Network
Local Area Network
Logical Access Network
Linked Access Node
Explanation - LAN stands for Local Area Network, typically covering a small geographical area such as an office or home.
Correct answer is: Local Area Network
Q.4 Which network type spans the largest geographical area?
LAN
WAN
MAN
PAN
Explanation - Wide Area Network (WAN) spans large geographical areas such as countries or continents.
Correct answer is: WAN
Q.5 In networking, what does IP stand for?
Internet Process
Internal Protocol
Internet Protocol
Interface Program
Explanation - IP stands for Internet Protocol, which defines rules for addressing and routing data on the Internet.
Correct answer is: Internet Protocol
Q.6 Which of the following is NOT a type of computer network?
LAN
WAN
CPU
MAN
Explanation - CPU (Central Processing Unit) is a hardware component, not a type of network.
Correct answer is: CPU
Q.7 What does bandwidth in networking refer to?
Size of the cable
Maximum data transfer rate
Network security level
Type of protocol used
Explanation - Bandwidth refers to the maximum rate at which data can be transmitted over a network channel.
Correct answer is: Maximum data transfer rate
Q.8 Which topology connects all devices to a single central hub?
Star
Ring
Bus
Mesh
Explanation - In a star topology, all devices are connected to a central hub or switch.
Correct answer is: Star
Q.9 Which protocol is used to access websites on the Internet?
FTP
HTTP
SMTP
DNS
Explanation - HTTP (Hypertext Transfer Protocol) is used to access and transfer web pages on the Internet.
Correct answer is: HTTP
Q.10 Which layer of the OSI model deals with logical addressing?
Network
Transport
Data Link
Application
Explanation - The Network layer is responsible for logical addressing (e.g., IP addresses).
Correct answer is: Network
Q.11 Which device converts digital signals to analog for transmission over phone lines?
Router
Modem
Switch
Repeater
Explanation - A modem modulates and demodulates digital signals into analog for transmission via telephone lines.
Correct answer is: Modem
Q.12 What does DNS stand for in networking?
Domain Name System
Data Network Service
Digital Node Server
Dynamic Number Setup
Explanation - DNS translates human-readable domain names into IP addresses.
Correct answer is: Domain Name System
Q.13 Which type of network is Bluetooth an example of?
WAN
MAN
LAN
PAN
Explanation - Bluetooth technology is typically used in a Personal Area Network (PAN).
Correct answer is: PAN
Q.14 Which network device operates at the Data Link layer?
Router
Switch
Hub
Gateway
Explanation - Switches operate at the Data Link layer, forwarding frames based on MAC addresses.
Correct answer is: Switch
Q.15 What is the default port number for HTTP?
25
80
21
110
Explanation - Port 80 is the default port used by HTTP.
Correct answer is: 80
Q.16 Which of the following is a peer-to-peer file-sharing protocol?
SMTP
BitTorrent
HTTP
IMAP
Explanation - BitTorrent is a peer-to-peer protocol for sharing files over a distributed network.
Correct answer is: BitTorrent
Q.17 Which type of signal does fiber optic cable transmit?
Radio waves
Electrical signals
Light signals
Infrared
Explanation - Fiber optic cables transmit data as pulses of light.
Correct answer is: Light signals
Q.18 What does SMTP stand for?
Simple Mail Transfer Protocol
Secure Messaging Transport Protocol
System Mail Transmission Protocol
Standard Messaging Text Protocol
Explanation - SMTP is a protocol for sending emails across networks.
Correct answer is: Simple Mail Transfer Protocol
Q.19 Which device breaks up collision domains in Ethernet networks?
Hub
Switch
Repeater
Bridge
Explanation - A switch breaks up collision domains by creating a separate domain for each port.
Correct answer is: Switch
Q.20 Which layer of the OSI model is responsible for encryption and compression?
Application
Presentation
Transport
Session
Explanation - The Presentation layer handles data translation, encryption, and compression.
Correct answer is: Presentation
Q.21 Which protocol is used to transfer files between computers?
HTTP
FTP
SMTP
SNMP
Explanation - FTP (File Transfer Protocol) is used for transferring files over a network.
Correct answer is: FTP
Q.22 Which addressing scheme uses 32-bit addresses?
IPv6
IPv4
MAC
DNS
Explanation - IPv4 addresses are 32-bit in length, providing around 4.3 billion unique addresses.
Correct answer is: IPv4
Q.23 What is the full form of URL?
Universal Routing Link
Uniform Resource Locator
Unified Resource Link
Universal Resource Locator
Explanation - URL stands for Uniform Resource Locator, which specifies addresses on the web.
Correct answer is: Uniform Resource Locator
Q.24 Which network topology has the highest fault tolerance?
Bus
Star
Mesh
Ring
Explanation - Mesh topology connects every device to every other device, providing high redundancy and fault tolerance.
Correct answer is: Mesh
Q.25 Which of the following IP addresses is reserved for loopback testing?
192.168.0.1
127.0.0.1
255.255.255.0
0.0.0.0
Explanation - 127.0.0.1 is the standard loopback address used for testing TCP/IP configurations.
Correct answer is: 127.0.0.1