Question 21
Refer to the capture output. The administrator has captured three packets in the network. Which statement regarding the captured packets is incorrect?
A. This packets represent a TCP three-way handshake process.
B. 10.0.12.1 is the telnet server, while 10.0.12.2 is the telnet client.
C. The three packets contain no application data.
D. 10.0.12.1 uses port 50190 to buid the telnet connection.
Question 22
An Ethernet frame is captured by network protocol analyzer tool and the value of Type/Length field is 0x0800.Which of the following statements about the frame are correct? (Choose two)
A. The frame structure of the frame is Ethernet_II
B. The frame structure of the frame is 802.3
C. Its upper layer protocol is IP
D. Its upper layer protocol is IPX
Question 23
Which of the following descriptions regarding the TTL field of the IP packet is correct?
A. The TTL defines how many packets the source can send.
B. The TTL defines the duration during which the source can send packets.
C. The TTL value will decrement by 1 each time the packet is routed.
D. The TTL value will increment by 1 each time the packet is routed.
Question 24
Which of the following statements are correct about TTL field in IP packet? (Choose two)
A. The maximum value of TTL is 65535.
B. Normally, it's impossible for a router to receive a packet whose TTL is zero.
C. The main purpose of TTL is to prevent IP packets from circulating endlessly in a network which can consume a lot of bandwidth.
D. TTL value will be decremented as a packet is passed through the network devices such as hub, LAN switch and router.
Question 25
In the case of Huawei router, what is the "-i" parameter in a Ping command issued on a VRP operating system used to set?
A. Interface for sending an Echo Request packet
B. Source IP address for sending an Echo Request packet
C. Interface for receiving an Echo Reply packet
D. Destination IP address for receiving an Echo Reply packet
Question 26
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?
A. Destination port
B. Source port
C. Destination IP address
D. Source IP address
Question 27
Which of the following statements regarding the verification of IP connectivity are false? (Choose three)
A. 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.
B. 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.
C. The ping command can be used to verify connectivity between the host and the local gateway.
D. The command "ipconfig /release" can be used to check connectivity problems between the host and the local gateway.
Question 28
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)
A. ICMP
B. TCP
C. ARP
D. UDP
Question 29
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)
A. The source router had shutdown the ICMP function.
B. This destination IP address does not exist.
C. The gateway cannot find a route to the destination.
D. This is a normal phenomenon.
Question 30
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?
A. The network administrator used the command ping -c 2 -s 800 10.0.0.2
B. The network administrator used the command ping -a 2 -v 800 10.0.0.2
C. The path between the source and destination is not OK.
D. The network administrator changed the default TTL value.
