H12-211 : HCIA Routing & Switching : Part 02

H12-211 : HCIA Routing & Switching : Part 02

1. Refer to the capture output. The administrator has captured three packets in the network. Which statement regarding the captured packets is incorrect?

   

   • This packets represent a TCP three-way handshake process.
   • 10.0.12.1 is the telnet server, while 10.0.12.2 is the telnet client.
   • The three packets contain no application data.
   • 10.0.12.1 uses port 50190 to buid the telnet connection.

2. An Ethernet frame is captured by wireshark and the value of Type/Length field is 0x0800.

   Which of the following statements about the frame are correct? (Choose two)

   • The frame format is Ethernet_II
   • The frame format is IEEE802.3
   • Its upper layer protocol is IP
   • Its upper layer protocol is IPX

3. Which of the following descriptions regarding the TTL field of the IP packet is correct?

   • The TTL defines how many packets the source can send.
   • The TTL defines the duration during which the source can send packets.
   • The TTL value will decrement by 1 each time the packet is routed.
   • The TTL value will increment by 1 each time the packet is routed.

4. Which of the following statements are correct about TTL field in IP packet? (Choose two)

   • The maximum value of TTL is 65535.
   • Normally, it’s impossible for a router to receive a packet whose TTL is zero.
   • The main purpose of TTL is to prevent IP packets from circulating endlessly in a network which can consume a lot of bandwidth.
   • TTL value will be decremented as a packet is passed through the network devices such as hub, LAN switch and router.

5. In the case of Huawei router, what is the “-i” parameter in a Ping command issued on a VRP operating system used to set?

   • Interface for sending an Echo Request packet
   • Source IP address for sending an Echo Request packet
   • Interface for receiving an Echo Reply packet
   • Destination IP address for receiving an Echo Reply packet

6. To provide the information about the IP addresses that a user packet traverses along the path to the destination, which of the following does Tracert record in each expired ICMP TTL packet?

   • Destination port
   • Source port
   • Destination IP address
   • Source IP address

7. Which of the following statements regarding the verification of IP connectivity are false? (Choose three)

   • The ping 127.0.0.1 command can be used to check whether the network cable is correctly inserted into the host’s Ethernet port.
   • The ping command with the host IP address as the destination can be used to verify that the TCP/IP protocol suite is functioning correctly.
   • The ping command can be used to verify connectivity between the host and the local gateway.
   • The command “ipconfig /release” can be used to check connectivity problems between the host and the local gateway.

8. A network administrator uses the ping command to check for points of failure in the network.

   Which protocols will be used during this process? (Choose two)

   • ICMP
   • TCP
   • ARP
   • UDP

9. A network administrator recently used tracert to trace the path to the destination IP address of an external website, however the trace path displayed only a timeout result.

   Which of the following statements correctly explains the reason for this? (Choose two)

   • The source router had shutdown the ICMP function.
   • This destination IP address does not exist.
   • The gateway cannot find a route to the destination.
   • This is a normal phenomenon.

10. A network administrator uses the ping command to test connectivity to the destination 10.0.0.2 on a Huawei AR series router.

    

    Which statement regarding the output is correct?

    •  The network administrator used the command ping -c 2 -s 800 10.0.0.2
    • The network administrator used the command ping -a 2 -v 800 10.0.0.2
    • The path between the source and destination is not OK.
    • The network administrator changed the default TTL value.

11. Which of the following statements explains the behavior of the ICMP redirect function? (Choose two)

    • When a router receives data on the interface via which the same data needs to be forwarded, and the source is on the same segment as the next hop, an ICMP redirect message will be sent by the router to the source.
    • When a router receives data on an interface, and the router’s IP address matches the destination IP of the data, an ICMP redirect message will be sent by the router to the source.
    • When a router receives data on the interface via which the same data needs to be forwarded, and the source is on the same segment as the next hop, an ICMP Redirect message will be sent by the source to the router.
    • When a router receives data on the interface via which the same data needs to be forwarded, and the source is on a different segment from the next hop, an ICMP redirect message will be sent by the router to the source

12. Host A wishes to send data to host C, and generates an ARP request to obtain the destination MAC address.

    

    Which statement is true?

    • The destination IP address of the ARP request is Host C.
    • The destination MAC address of this ARP request is Host C.
    • The destination IP address for the ARP request is a broadcast IP address.
    • The destination MAC address of this frame is the MAC address of G0/0/0 on RTA.

13. An ARP request is sent by host A to obtain the destination MAC address of host D.

    Which statement is true about regarding the ARP reply?

    • The destination MAC address of this frame is the MAC address of Switch A.
    • The destination IP address of this packet is the VLANIF1 IP address of Switch A.
    • The destination MAC address of this frame is the MAC address of Host A.
    • The destination IP address of this packet is a broadcast IP address.

14. Which of the following applications can be used to detect the path along which the data packets are transmitted from the source to the destination?

    • Route
    • Netstat
    • Tracert
    • Send

15. How many probe packets are sent for each TTL value by default when “tracert” is used to detect the path along which packet is sent from source to destination?

    • 3
    • 4
    • 6
    • 8

16. Which of the following types can ICMP packets be classified into? (Choose two)

    • ICMP transport packet
    • ICMP error reporting packet
    • ICMP query packet
    • ICMP application packet

17. On VRP platform, which of the following parameters can be used together with the “ping” command to specify the source address of an echo request message?

    • -a
    • -s
    • -d
    • -n

18. A router functioning as a Proxy receives an ARP request packet, but finds that the destination address in the packet is not intended for itself. In this case, what will the router do? (Choose two)

    • Discard the packet.
    • Check for a route that matches the destination address.
    • Forward its MAC address to the ARP request sender after finding that a route to the destination address is available.
    • Broadcast the ARP request packet.

19. Two end stations in a point-to-point network perform address resolution.

    Which of the following statements is correct?

    • The destination address of an ARP request from each station will be a unicast MAC address.
    • The destination address of an ARP request from each station will be a broadcast IP address.
    • The destination address of an ARP reply from each station will be a unicast MAC address.
    • The destination address of an ARP reply from each station will be a broadcast MAC address.

20. What will the destination MAC address be at the moment a frame is transmitted by the host, when the router is the IP destination?

    • The MAC address of the switch.
    • The MAC address of the router interface G0/0/0.
    • The MAC address of the host.
    • The destination MAC address will be a broadcast MAC address.