QUESTION 121
Which extension headers is/are supported by IPv6 packets?
A. Fragment extension header
B. Hop-by-Hop Options header
C. VLAN extension header
D. Destination Options header
Correct Answer: D

QUESTION 122
telnetlib is a module provided by Python to implement the Telnet protocol.
A. TRUE
B. FALSE
Correct Answer: A

QUESTION 123
When the “delete vrpcfg.zip” command is run on the user interface of the Versatile Routing Platform (VRP), the file can be permanently deleted only after it is cleared from the recycle bin.
A. TRUE
B. FALSE
Correct Answer: B

QUESTION 124
According to OSI reference model, which layer is responsible for end to end error checking and flow control?
A. Data link layer.
B. Network layer.
C. Physical layer.
D. Transport layer.
Correct Answer: D

QUESTION 125
On Huawei routers, which of the following is the default internal preference of OSPF?
A. 10
B. 30
C. 0
D. 20
Correct Answer: A

QUESTION 126
If a network’s address is 192.168.1.0, the broadcast address of the network is 192.168.1.255.
A. TRUE
B. FALSE
Correct Answer: B

QUESTION 127
or multiple paths to the same destination network, the router needs to compare the preference values of the paths. If the preference values are the same, the router selects the paths based on the cost value.
A. TRUE
B. FALSE

Correct Answer: B
QUESTION 128
If Proto of a route displayed in the routing table is OSPF, the preference of the route must be 10.
A. TRUE
B. FALSE
Correct Answer: B

QUESTION 129
Which of the following is a valid default route configuration?
A. [Huawei] lip route-static 0.0.0.0 255.255.255.255 192.168.1.1
B. [Huawei-Serial0] lip route-static 0.0.0.0 0.0.0.0 0.0.0.0
C. [Huawei] ip route-static 0.0.0.0 0.0.0.0 0.0.0.0
D. [Huawei] ip route-static 0.0.0.0 0.0.0.0 192.168.1.1
Correct Answer: D

QUESTION 130
Which of the following statements are true about the OSPF neighbor status?
A. After LSDB synchronization is completed, the router state changes to Full.
B. The sequence number of DD packets is determined in the Exchange state.
C. The master/slave relationship of OSPF is formed in the ExStart state.
D. In the Exchange state, routers send DD packets that briefly describe link state information to each other to describe the content of the local link state database (LSDB).
Correct Answer: ACD

QUESTION 131
In a broadcast address, all host bits are set to 1 and a broadcast address can be used as a host address.
A. TRUE
B. FALSE
Correct Answer: B

QUESTION 132
Which of the following statements regarding single area OSPF are correct?
A. An IP address needs to be configured on a loopback interface of each router before configuring an OSPF area.
B. A single area can be configured using any supported area number.
C. All of the links of the network need to be advertised in Area 0.
D. The value of an area can be from 0.0.0.0 to 255.255.255.255.
Correct Answer: BD

QUESTION 133
Assuming all STP enabled switches have the same bridge priority. The MAC address of switch A is 00-e0-fc-00-00-40, the MAC address of switch B is 00-e0-fc-00-00-10, the MAC address of switch C is 00-e0-fc-00-00-20, and the MAC address of switch D is 00-e0-fc-00-00-80. Which switch will be elected as the root switch?
A. Switch A.
B. Switch B.
C. Switch C.
D. Switch D.
Correct Answer: B

QUESTION 134
Which of the following information is relevant to the data transmission rate of an Eth-Trunk in manual mode?
A. Quantity of member interfaces
B. Whether IP addresses are configured for its member interfaces
C. Whether its member interfaces reside on a public or private network
D. Bandwidth of its member interfaces
Correct Answer: AD
QUESTION 135
As specified by the RSTP protocol, when a root port fails, which type of port will function as a new root port and enters the forwarding state without any delay?
A. Edge Port.
B. Forwarding Port.
C. Backup Port.
D. Alternate Port.
Correct Answer: A
QUESTION 136
On an STP-enabled switch, a port in Learning state can transition to the Forwarding state only after the Forward Delay timer expires.
A. TRUE
B. FALSE
Correct Answer: A
QUESTION 137
When a switch port sends a data frame with the same VLAN tag and PVID, the switch port removes the VLAN tag and forwards the frame.
A. TRUE
B. FALSE
Correct Answer: B

QUESTION 138
Which of the following port states are Included in Rapid Spanning Tree Protocol (RSTP)?
A. Learning
B. Discarding
C. Forwarding
D. Listening
Correct Answer: BCD

QUESTION 139
Which of the following BIDs cannot be contained in a configuration BPDU sent by a switch?
A. 0 10-01-02-03-04-05
B. 32768 06-01-02-03-04-05
C. 0 00-01-02-03-04-05
D. 4096 01-01-02-03-04-05
Correct Answer: D
QUESTION 140
On a network running STP, the root switch is elected only by comparing switch priorities. On a network running RSTP, both the priorities and MAC addresses of switches will be compared for electing the root switch.
A. TRUE
B. FALSE
Correct Answer: B