NEW QUESTION 1

By default, what is the ForwarD.Delay time of the STP protocol in seconds? ()

• A. 10
• B. 15
• C. 20

Answer: C

NEW QUESTION 2

As shown in the figure, if the command ping 10.1.1.2 is executed on R1, the data frame of VLAN 10 received from LSW2 by LSW1 is tagged. ()(True or False)

• A. True
• B. False

Answer: A

NEW QUESTION 3

In a Layer 2 network with redundant links, which of the following protocols can be used to avoid loops?

• A. STP
• B. UDP
• C. ARP
• D. VRRP

Answer: A

NEW QUESTION 4

What is the role of link aggregation? ()*

• A. Improve network reliability
• B. Increase bandwidth
• C. Facilitate analysis of data
• D. Achieve load sharing

Answer: ABD

NEW QUESTION 5

NAPT allows multiple private IP addresses to be mapped to the same public P address through different port numbers. The following description of the port number in NAPT is correct ().

• A. The correspondence between port numbers and private addresses must be manually configured
• B. No need to do any configuration about port number
• C. Only need to configure the range of port numbers
• D. Need to use ACL to assign port numbers

Answer: B

NEW QUESTION 6

For switches running the STP protocol, the port needs to wait for the forwarding delay in the Learning state to transform into the Forwarding state. ()

• A. True
• B. False

Answer: B

NEW QUESTION 7

Which statement about the 0SPF protocol DR is correct? ()

• A. DR must be the highest priority device in the network
• B. Router ID, the larger the value, the more preferred it is to be elected as DR
• C. DR election is preemptive
• D. An interface priority is 0, then the interface cannot be a DR

Answer: D

NEW QUESTION 8

What is the length of the Ethernet II frame containing the Ethernet header?

• A. 64-1518B
• B. 60-1560B
• C. 46-1500B
• D. 64-1500B

Answer: A

NEW QUESTION 9

All ports on the root bridge exchange machine are designated ends ()

• A. True
• B. False

Answer: A

NEW QUESTION 10

The IPv6 address 2001: ABEF:224E:FFE2:BCC0:CD00:DDBE:8D58 cannot be abbreviated. ()

• A. True
• B. False

Answer: A

NEW QUESTION 11

All four switches run STP, and various parameters adopt default values. If the G0/0/2 port of switch C is blocked and the configuration BPDU cannot be sent through this port, how long will the blocked port in the network enter the forwarding state ()

• A. About 50 seconds
• B. About 30 seconds
• C. About 15 seconds

Answer: B

NEW QUESTION 12

If host A. has the ARP cache of host B., host A. can ping host B. ()

• A. True
• B. False

Answer: B

NEW QUESTION 13

The network is shown in the figure below. The following statementcorrectIs there? () (Multiple Choice Questions)

• A. Host A and Host c can ping through
• B. All hosts can ping each other
• C. Host B and Host C can ping through
• D. Host A and Host B cannot ping through

Answer: ACD

NEW QUESTION 14

When using the SNMPv1 protocol to manage network devices, which of the following commands is used by the network management system to complete the configuration of the network devices? ()

• A. Response
• B. Set Request
• C. Get-Request

Answer: C

NEW QUESTION 15

The output information of the routing table of a certain router is shown in the figure. Which of the following statements is correct? () (Multiple Choice Questions)
R1display ip routing-table
Route Flags: R-relay, D-download to fib

• A. The NextHop for this router to reach 10.0.2.2 is 10.0.12.2
• B. The NextHop for this router to reach 10.0.0.1 is 10.0.12.2
• C. The NextHop for this router to reach 10.0.2.2 is 10.0.21.2
• D. The NextHop for this router to reach 10.0.0.1 is 10.0.21.2

Answer: BC

NEW QUESTION 16
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