Q.1 What does IP stand for in computer networks?
Internet Protocol
Internal Processing
Information Pathway
Integrated Program
Explanation - IP stands for Internet Protocol, which is used to deliver data packets from source to destination across networks.
Correct answer is: Internet Protocol
Q.2 Which device is primarily used to connect different networks together?
Switch
Hub
Router
Repeater
Explanation - A router is used to connect different networks and direct data packets between them.
Correct answer is: Router
Q.3 What is the main purpose of DNS in networking?
Encrypt data
Translate domain names to IP addresses
Store emails
Provide firewall protection
Explanation - DNS (Domain Name System) converts human-readable domain names into machine-readable IP addresses.
Correct answer is: Translate domain names to IP addresses
Q.4 Which layer of the OSI model deals with data encryption?
Application Layer
Presentation Layer
Network Layer
Session Layer
Explanation - The Presentation Layer handles data translation, encryption, and compression.
Correct answer is: Presentation Layer
Q.5 What is the default port number for HTTP?
25
53
80
443
Explanation - Port 80 is the default port used by HTTP (HyperText Transfer Protocol).
Correct answer is: 80
Q.6 Which of the following is a private IP address?
192.168.1.1
8.8.8.8
172.217.3.110
142.250.190.78
Explanation - Private IP ranges include 192.168.x.x, 10.x.x.x, and 172.16.x.x to 172.31.x.x.
Correct answer is: 192.168.1.1
Q.7 Which protocol is used for sending emails?
SMTP
FTP
HTTP
SNMP
Explanation - SMTP (Simple Mail Transfer Protocol) is used to send emails.
Correct answer is: SMTP
Q.8 What does LAN stand for?
Local Area Network
Large Access Node
Logical Application Network
Linked Access Network
Explanation - LAN stands for Local Area Network, typically covering a small geographical area like a home or office.
Correct answer is: Local Area Network
Q.9 Which device operates at the Data Link Layer of the OSI model?
Hub
Router
Switch
Firewall
Explanation - Switches work at the Data Link Layer (Layer 2) to forward frames based on MAC addresses.
Correct answer is: Switch
Q.10 What is the maximum length of a MAC address?
32 bits
48 bits
64 bits
128 bits
Explanation - A MAC address is 48 bits long, usually written as 12 hexadecimal characters.
Correct answer is: 48 bits
Q.11 Which protocol is used to securely transfer files?
FTP
SFTP
Telnet
SMTP
Explanation - SFTP (Secure File Transfer Protocol) is used for secure file transfers.
Correct answer is: SFTP
Q.12 Which topology connects all devices to a single central hub?
Bus
Ring
Star
Mesh
Explanation - In a Star topology, each device connects to a central hub or switch.
Correct answer is: Star
Q.13 What is the default subnet mask for a Class C IP address?
255.0.0.0
255.255.0.0
255.255.255.0
255.255.255.255
Explanation - Class C IP addresses use the subnet mask 255.255.255.0 by default.
Correct answer is: 255.255.255.0
Q.14 Which protocol is connection-oriented?
UDP
TCP
IP
ICMP
Explanation - TCP (Transmission Control Protocol) is connection-oriented, ensuring reliable delivery of data.
Correct answer is: TCP
Q.15 What is the purpose of a firewall?
Increase internet speed
Filter network traffic
Translate IP addresses
Store user data
Explanation - A firewall filters incoming and outgoing network traffic to protect networks from unauthorized access.
Correct answer is: Filter network traffic
Q.16 Which protocol is used for secure web browsing?
HTTP
HTTPS
FTP
DNS
Explanation - HTTPS (HyperText Transfer Protocol Secure) provides encryption for secure communication over the web.
Correct answer is: HTTPS
Q.17 Which of these is an example of a transport layer protocol?
IP
TCP
Ethernet
ARP
Explanation - TCP and UDP are the main protocols operating at the Transport Layer of the OSI model.
Correct answer is: TCP
Q.18 What does VPN stand for?
Virtual Protocol Network
Virtual Private Network
Verified Public Network
Variable Path Node
Explanation - VPN stands for Virtual Private Network, used to create secure connections over public networks.
Correct answer is: Virtual Private Network
Q.19 Which command is used to test connectivity between two computers?
ping
traceroute
ftp
netstat
Explanation - The ping command checks connectivity by sending ICMP echo requests to another device.
Correct answer is: ping
Q.20 In networking, what does bandwidth refer to?
Network security level
Data transfer rate
IP address range
Signal strength
Explanation - Bandwidth is the maximum rate at which data can be transferred over a network.
Correct answer is: Data transfer rate
Q.21 Which protocol translates IP addresses to MAC addresses?
DNS
ARP
ICMP
DHCP
Explanation - ARP (Address Resolution Protocol) maps IP addresses to MAC addresses in a network.
Correct answer is: ARP
Q.22 Which is the first layer of the OSI model?
Application
Network
Data Link
Physical
Explanation - The Physical Layer deals with the hardware transmission of raw data such as cables and signals.
Correct answer is: Physical
Q.23 What does DHCP stand for?
Dynamic Host Configuration Protocol
Data Handling Communication Protocol
Domain Host Control Process
Direct Hardware Connection Protocol
Explanation - DHCP automatically assigns IP addresses to devices on a network.
Correct answer is: Dynamic Host Configuration Protocol
Q.24 Which protocol is used to retrieve emails from a server?
SMTP
IMAP
DHCP
SNMP
Explanation - IMAP (Internet Message Access Protocol) is used by email clients to retrieve and manage emails from servers.
Correct answer is: IMAP
Q.25 Which type of IP address is unique globally?
Private IP
Public IP
Loopback IP
Static IP
Explanation - A Public IP address is globally unique and accessible over the internet.
Correct answer is: Public IP