Vaidikalaya

MCQ On IP Address

Q1. What is an IP address?.
  1. A hardware component
  2. A unique identifier given to devices in a network
  3. A type of router
  4. A type of server

Answer: b, A unique identifier given to devices in a network

Solution: Identifies devices on a network.

Q2. Who assigns an IP address when a device connects to the internet?.
  1. Firewall
  2. DNS
  3. ISP or Router
  4. Switch

Answer: c, ISP or Router

Solution: ISPs/routers allocate IPs to devices.

Q3. What is the purpose of an IP address?.
  1. To store files
  2. To identify and communicate with devices
  3. To increase internet speed
  4. To encrypt data

Answer: b, To identify and communicate with devices

Solution: Used to identify and communicate with devices.

Q4. Which version of IP uses a 32-bit address?.
  1. IPv2
  2. IPv4
  3. IPv6
  4. IPv8

Answer: b, IPv4

Solution: IPv4 uses 32-bit addressing.

Q5. What does NAT stand for?.
  1. Network Access Technology
  2. Network Address Translation
  3. Node Allocation Table
  4. Network Authentication Tool

Answer: b, Network Address Translation

Solution: NAT translates private IPs to public IPs.

Q6. What does NAT do?.
  1. Converts private IP to public IP
  2. Converts data to audio
  3. Blocks all connections
  4. Stores IP addresses

Answer: a, Converts private IP to public IP

Solution: NAT maps private IPs to a public IP.

Q7. Multiple devices using same WiFi appear with same public IP because of:.
  1. DHCP
  2. DNS
  3. NAT
  4. ARP

Answer: c, NAT

Solution: NAT makes all devices appear under one public IP.

Q8. What does DHCP do?.
  1. Converts domains to IP
  2. Automatically assigns IP addresses
  3. Encrypts data packets
  4. Filters malicious traffic

Answer: b, Automatically assigns IP addresses

Solution: DHCP auto-assigns IPs to devices.

Q9. An IP address contains which two parts?.
  1. Server and Client
  2. Source and Destination
  3. Network and Host
  4. Input and Output

Answer: c, Network and Host

Solution: IP has network part + host part.

Q10. A public IP address is:.
  1. Used only in LAN
  2. Used by devices inside network
  3. Internet-facing address
  4. Used only by DNS servers

Answer: c, Internet-facing address

Solution: Public IP is visible on the internet.

Q11. A dynamic IP address:.
  1. Never changes
  2. Changes automatically
  3. Is used only in servers
  4. Requires manual configuration

Answer: b, Changes automatically

Solution: Dynamic IP updates automatically.

Q12. Restarting a router may change which type of IP?.
  1. Static IP
  2. Dynamic IP
  3. IPv6 only
  4. DNS IP

Answer: b, Dynamic IP

Solution: Dynamic IPs often change on reconnect.

Q13. Which protocol helps route data packets over internet?.
  1. FTP
  2. DNS
  3. IP
  4. SMTP

Answer: c, IP

Solution: IP is responsible for routing packets.

Q14. NAT allows multiple devices to share:.
  1. Multiple private IPs
  2. One public IP
  3. Unlimited MAC addresses
  4. Static IP addresses

Answer: b, One public IP

Solution: NAT lets many devices use one public IP.

Q15. Switching from Wi-Fi to mobile data changes IP because:.
  1. Device reboots
  2. NAT stops working
  3. Network changes
  4. DHCP is disabled

Answer: c, Network changes

Solution: Different network = different IP.

Q16. IP addresses are essential for:.
  1. Running antivirus
  2. Sending and receiving data
  3. Charging devices
  4. Formatting storage

Answer: b, Sending and receiving data

Solution: IP enables communication on networks.