Q#1: Address mapping is used to:
(A) Translate one type of address to another (e.g., IP to MAC)
(B) Detect collisions
(C) Control flow
(D) None
Answer: (A) Translate one type of address to another (e.g., IP to MAC)
Q#2: ARP (Address Resolution Protocol) maps:
(A) IP addresses to MAC addresses
(B) MAC addresses to IP addresses
(C) Ports to IP addresses
(D) None
Answer: (A) IP addresses to MAC addresses
Q#3: RARP (Reverse ARP) maps:
(A) MAC addresses to IP addresses
(B) IP to MAC
(C) Port to IP
(D) None
Answer: (A) MAC addresses to IP addresses
Q#4: ICMP (Internet Control Message Protocol) is used for:
(A) Error reporting and diagnostics
(B) Data transfer
(C) Routing only
(D) None
Answer: (A) Error reporting and diagnostics
Q#5: ICMP messages include:
(A) Destination unreachable, Echo request/reply, Time exceeded
(B) Only routing
(C) Only TCP errors
(D) None
Answer: (A) Destination unreachable, Echo request/reply, Time exceeded
Q#6: ICMP echo request/reply is used in:
(A) Ping command
(B) Traceroute only
(C) Address mapping
(D) None
Answer: (A) Ping command
Q#7: Time Exceeded ICMP message occurs when:
(A) TTL reaches zero
(B) Packet is fragmented
(C) Destination unreachable
(D) None
Answer: (A) TTL reaches zero
Q#8: Destination Unreachable message indicates:
(A) Packet cannot reach the target host or network
(B) TTL exceeded
(C) MAC not found
(D) None
Answer: (A) Packet cannot reach the target host or network
Q#9: Source Quench message informs sender to:
(A) Slow down sending rate
(B) Stop sending
(C) Change IP
(D) None
Answer: (A) Slow down sending rate
Q#10: Multicast delivers data to:
(A) A group of hosts
(B) Single host
(C) All hosts in network
(D) None
Answer: (A) A group of hosts
Q#11: IPv4 multicast addresses range:
(A) 224.0.0.0 to 239.255.255.255
(B) 0.0.0.0 to 127.255.255.255
(C) 128.0.0.0 to 191.255.255.255
(D) None
Answer: (A) 224.0.0.0 to 239.255.255.255
Q#12: Multicast reduces:
(A) Network traffic compared to multiple unicast
(B) Collisions only
(C) Address space
(D) None
Answer: (A) Network traffic compared to multiple unicast
Q#13: IGMP (Internet Group Management Protocol) is used for:
(A) Managing multicast group membership
(B) ARP resolution
(C) Routing only
(D) None
Answer: (A) Managing multicast group membership
Q#14: Multicast MAC address mapping is used to:
(A) Deliver frames at Data Link layer
(B) Assign IP address
(C) Detect collisions
(D) None
Answer: (A) Deliver frames at Data Link layer
Q#15: IP to MAC mapping for multicast in Ethernet uses:
(A) Special MAC address derived from IP
(B) Unicast MAC
(C) Broadcast MAC
(D) None
Answer: (A) Special MAC address derived from IP
Q#16: ARP cache stores:
(A) IP-to-MAC mappings temporarily
(B) IP addresses only
(C) MAC addresses only
(D) None
Answer: (A) IP-to-MAC mappings temporarily
Q#17: ARP request is sent as:
(A) Broadcast
(B) Unicast
(C) Multicast
(D) None
Answer: (A) Broadcast
Q#18: ARP reply is sent as:
(A) Unicast
(B) Broadcast
(C) Multicast
(D) None
Answer: (A) Unicast
Q#19: RARP server provides:
(A) IP address to diskless workstations
(B) MAC address to hosts
(C) Subnet mask
(D) None
Answer: (A) IP address to diskless workstations
Q#20: ICMP Redirect message informs host to:
(A) Use a better route
(B) Stop sending
(C) Change MAC
(D) None
Answer: (A) Use a better route
Q#21: Multicast reduces network load by:
(A) Sending single copy to multiple recipients
(B) Sending multiple unicast copies
(C) Broadcasting to all hosts
(D) None
Answer: (A) Sending single copy to multiple recipients
Q#22: IP multicasting requires:
(A) Routing support for multicast
(B) Only unicast support
(C) Broadcast support
(D) None
Answer: (A) Routing support for multicast
Q#23: Multicast group membership is dynamic and managed by:
(A) IGMP
(B) ARP
(C) ICMP only
(D) None
Answer: (A) IGMP
Q#24: ICMP Type field identifies:
(A) Message type (e.g., Echo Reply, Destination Unreachable)
(B) TTL
(C) Source IP
(D) None
Answer: (A) Message type (e.g., Echo Reply, Destination Unreachable)
Q#25: ICMP Code field specifies:
(A) Reason for the message
(B) Protocol type
(C) MAC address
(D) None
Answer: (A) Reason for the message
Q#26: ICMP error messages are generated by:
(A) Routers or destination hosts
(B) Source host only
(C) Switches only
(D) None
Answer: (A) Routers or destination hosts
Q#27: ARP spoofing is a type of:
(A) Network attack
(B) Error detection
(C) Multicast
(D) None
Answer: (A) Network attack
Q#28: ICMP unreachable types include:
(A) Network unreachable, host unreachable, port unreachable
(B) TTL expired
(C) Only routing errors
(D) None
Answer: (A) Network unreachable, host unreachable, port unreachable
Q#29: TTL exceeded message helps in:
(A) Traceroute
(B) Ping
(C) ARP
(D) None
Answer: (A) Traceroute
Q#30: Multicast IP allows:
(A) Efficient one-to-many communication
(B) One-to-one only
(C) Broadcast only
(D) None
Answer: (A) Efficient one-to-many communication
Q#31: IGMPv2 added:
(A) Leave messages for hosts to leave a multicast group
(B) Basic join only
(C) Routing
(D) None
Answer: (A) Leave messages for hosts to leave a multicast group
Q#32: Multicast routing protocols include:
(A) DVMRP, PIM, MOSPF
(B) RIP only
(C) OSPF only
(D) None
Answer: (A) DVMRP, PIM, MOSPF
Q#33: DVMRP stands for:
(A) Distance Vector Multicast Routing Protocol
(B) Dynamic Vector Multicast Routing Protocol
(C) Direct Vector Multicast Routing
(D) None
Answer: (A) Distance Vector Multicast Routing Protocol
Q#34: PIM stands for:
(A) Protocol Independent Multicast
(B) Protocol Integrated Multicast
(C) Private Internet Multicast
(D) None
Answer: (A) Protocol Independent Multicast
Q#35: Multicast MAC address for IPv4 starts with:
(A) 01-00-5E
(B) FF-FF-FF
(C) 00-00-00
(D) None
Answer: (A) 01-00-5E
Q#36: ICMP messages are encapsulated in:
(A) IP packets
(B) Ethernet frames only
(C) TCP segments
(D) None
Answer: (A) IP packets
Q#37: ARP cache timeout ensures:
(A) Old mappings are removed periodically
(B) IP addresses never change
(C) MAC addresses remain fixed
(D) None
Answer: (A) Old mappings are removed periodically
Q#38: ICMP does not carry:
(A) User data
(B) Error reports
(C) Echo messages
(D) None
Answer: (A) User data
Q#39: Multicast tree types include:
(A) Source-based and shared tree
(B) Only source-based
(C) Only shared tree
(D) None
Answer: (A) Source-based and shared tree
Q#40: ARP reply includes:
(A) MAC address corresponding to requested IP
(B) IP only
(C) TTL
(D) None
Answer: (A) MAC address corresponding to requested IP
Q#41: ICMP Redirect message informs:
(A) Host to use a better router
(B) Host to stop sending
(C) Switch to forward
(D) None
Answer: (A) Host to use a better router
Q#42: IPv6 multicast uses addresses starting with:
(A) FF00::/8
(B) 2000::/3
(C) FE80::/10
(D) None
Answer: (A) FF00::/8
Q#43: IPv6 does not use:
(A) Broadcast
(B) Multicast
(C) Anycast
(D) None
Answer: (A) Broadcast
Q#44: Multicast helps in:
(A) Efficient video conferencing
(B) One-to-one communication
(C) MAC addressing
(D) None
Answer: (A) Efficient video conferencing
Q#45: IGMP Snooping is done by:
(A) Switches to optimize multicast delivery
(B) Routers only
(C) Hosts only
(D) None
Answer: (A) Switches to optimize multicast delivery
Q#46: IP to MAC mapping is crucial for:
(A) Delivering IP packets at Data Link layer
(B) IP routing
(C) Port forwarding
(D) None
Answer: (A) Delivering IP packets at Data Link layer
Q#47: ICMP messages do not:
(A) Correct data errors
(B) Report errors
(C) Diagnose network
(D) None
Answer: (A) Correct data errors
Q#48: Multicast efficiency increases when:
(A) Single copy is delivered to multiple recipients
(B) Multiple unicast copies are sent
(C) Broadcast is used
(D) None
Answer: (A) Single copy is delivered to multiple recipients
Q#49: RARP is mostly used in:
(A) Diskless workstations
(B) Routers only
(C) Multicast
(D) None
Answer: (A) Diskless workstations
Q#50: Primary purpose of address mapping and ICMP:
(A) Ensure correct delivery, error reporting, and efficient multicast
(B) Detect collisions
(C) Assign ports
(D) None
Answer: (A) Ensure correct delivery, error reporting, and efficient multicast