QUESTION 61
A network administrator uses the ping command to check for points of failure in the network. Which protocols will be used during this process?

A. ICMP.
B. TCP.
C. ARP.
D. UDP.
Correct Answer: AC

QUESTION 62
If a router does not match a specific route when forwarding a packet and there is no default route, the router discards the packet directly.
A. TRUE
B. FALSE
Correct Answer: A

QUESTION 63
Which of the following network types are supported by OSPF?
A. Point-to-multipoint(P2MP)
B. Broadcast
C. Point-to-point (P2P)
D. NBMA
Correct Answer: ABCD

QUESTION 64
Which of the following statements is true about direct routes?
A. The priority of the direct route is lower than that of the dynamic route.
B. The administrator needs to manually configure the destination network and next-hop address for the direct route.
C. The priority of the direct route is lower than that of the static route.
D. The direct route has the highest priority.
Correct Answer: D

QUESTION 65
Assume that an OSPF-enabled router has no loopback interface configured. What would be used as the router ID?
A. The biggest IP address of a physical interface on the router (if configured)
B. The preference of the router
C. The IP address of the router’s management interface (if configured)
D. The smallest Ip address of a physical interface on the router (if configured)
Correct Answer: A

QUESTION 66
The last option field (option) of an IPv4 packet is a length-variable and optional field. What is the maximum length of this field?
A. 40B
B. 10B
C. 20B
D. 60B

Correct Answer: A

QUESTION 67
In STP, the bridge ID on the switching network is as follows. With which of the following bridge IDs is the switch selected as the root bridge?
A. 32768 00-01-02-03-04-AA
B. 32768 00-01-02-03-04-BB
C. 4096 00-01-02-03-04-DD
D. 32768 00-01-02-03-04-CC
Correct Answer: C

QUESTION 68
Which of the following statements is true about the Forward Delay timer of STP?
A. Improve the configuration BPDU lifetime, ensuring that the configuration BPDUs can be forwarded to more switches.
B. Delay is required when a port transitions between Blocking and Disabled.
C. Prevent temporary loops.
D. Reduce the interval for sending BPDUs.
E. Improve the STP convergence speed.
Correct Answer: C

QUESTION 69
When a switch port receives a frame that does not carry a VLAN tag, it must add a PVID to the frame.
A. TRUE
B. FALSE
Correct Answer: A

QUESTION 70
Which of the following statements is true about root bridge election of STP?
A. The device with the smallest bridge priority becomes the root bridge.
B. The device with the largest bridge priority becomes the root bridge.
C. If the bridge priorities are the same, the device with the largest number of ports becomes the root bridge.
D. If the bridge priorities of devices are the same, the device with the largest MAC address becomes the root bridge.
Correct Answer: A

QUESTION 71
A switch receives a unicast data frame with a VLAN tag, but cannot find the destination MAC address of the data frame in its MAC address table. In this case, which action will the switch take?
A. The switch discards the data frame.
B. The switch broadcasts the data frame on all interfaces.
C. The switch broadcasts the data frame on all access interfaces.
D. The switch broadcasts the data frame on all interfaces (except that on which it was received) in the VLAN to which the data frame belongs.
Correct Answer: D

QUESTION 72
Which of the following parameters is not contained in STP configuration BPDUs?
A. Bridge ID
B. Root ID
C. VLAN ID
D. Port ID
Correct Answer: C

QUESTION 73
The VLAN ID cannot be set to 0.
A. TRUE
B. FALSE
Correct Answer: A

QUESTION 74
When a host moves frequently, which of the following VLAN assignment modes is the most appropriate?

A. Port-based VLAN assignment
B. Policy-based VLAN assignment
C. MAC address-based VLAN assignment
D. IP subnet-based VLAN assignment
Correct Answer: C

QUESTION 75
After a switch restarts, static MAC address entries saved on the switch remain in the MAC address table.

A. TRUE
B. FALSE

Correct Answer: A

QUESTION 76
Which of the following parameters is not used by Advanced ACL?
A. Time-range.
B. Source interface.
C. Destination port number.
D. Protocol number.
Correct Answer: B

QUESTION 77
What is the default least time of the IP address allocated by the DHCP server?

A. 12 hours
B. 24 hours
C. 18 hours
D. 1 hour

Correct Answer: B

QUESTION 78
An administrator wishes to manage the router in the remote branch office, which method can be used?

A. Telnet.
B. FTP.
C. Console Connection.
D. DHCP.
Correct Answer: C

QUESTION 79
Which of the following protocols is not a file transfer protocol?
A. HTTP packet
B. SFTP
C. TFTP
D. FTP
Correct Answer: A

QUESTION 80
An AC is a unified management and control device in the AC + Fit AP architecture. Which of the following functions is not supported by the AC?
A. User access authentication
B. User access control
C. AP configuration delivery
D. User data packet forwarding regardless of the data forwarding mode
Correct Answer: D