IP Routing Questions and Answers

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Showing 10 of 41 questions
Q31
A router uses ARP to
  • A Find IP address from hostname
  • B Find MAC address from IP
  • C Find DNS address
  • D Encrypt packets
Answer: Option B
Explanation: ARP maps IP addresses to MAC addresses for forwarding on LAN.
Q32
Which term refers to sending packets to all interfaces except the one they arrive on?
  • A Flooding
  • B Filtering
  • C Switching
  • D Tunneling
Answer: Option A
Explanation: Flooding forwards packets out all ports except the incoming port.
Q33
BGP is primarily used for
  • A Home networks
  • B Inter-AS routing on the Internet
  • C Bluetooth communication
  • D Wi-Fi authentication
Answer: Option B
Explanation: BGP is the main routing protocol between autonomous systems.
Q34
What is convergence in routing?
  • A Router shutting down
  • B All routers agreeing on routes
  • C Adding new cables
  • D Backup power restoring
Answer: Option B
Explanation: Convergence means all routers have updated and consistent routing tables.
Q35
Which device separates broadcast domains?
  • A Hub
  • B Switch
  • C Router
  • D Repeater
Answer: Option C
Explanation: Routers separate broadcast domains and route packets between networks.
Q36
In IP routing, TTL stands for
  • A Time to Login
  • B Time to Live
  • C Transfer to Local
  • D Terminal Link Layer
Answer: Option B
Explanation: TTL limits the lifetime of a packet to avoid endless looping.
Q37
Which routing type reduces router CPU usage?
  • A Dynamic routing
  • B Static routing
  • C Flood routing
  • D Random routing
Answer: Option B
Explanation: Static routing does not require CPU processing for route updates.
Q38
Administrative distance determines
  • A Packet size
  • B Reliable route source
  • C IP version
  • D Throughput
Answer: Option B
Explanation: AD shows the trustworthiness of a routing information source.
Q39
A routing loop occurs when
  • A Packet encryption fails
  • B Packet keeps circulating endlessly
  • C ARP fails
  • D DNS fails
Answer: Option B
Explanation: Routing loop means packet goes round multiple routers repeatedly.
Q40
Metric in routing refers to
  • A Physical cable length
  • B Value used to choose best route
  • C IP version
  • D Port number
Answer: Option B
Explanation: Metrics help determine the optimal path among alternatives.

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