NEW QUESTION 1

Which statement about the dynamic AC. address table is correct?

• A. The dynamic MAC obtained through the source A
• B. Address learning in the messag
• C. The table entries will age
• D. By viewing the number of specified dynamic MA
• E. address table entries, you can get the number of users communicating under the interfac
• F. After the device restarts, the previous dynamic table entries will be lost
• G. After the device restarts, the previous dynamic entries will be lost
• H. After the device restarts, the previously saved entries will not be lost

Answer: AC

NEW QUESTION 2

As shown in the figure below. Which network device can host A and host B use to achieve communication? () (Single-choice question)

• A. HUB
• B. Hub
• C. Layer 2 switch
• D. router

Answer: D

NEW QUESTION 3

The configuration of the country code will affect the actual frequency used for transmission and the maximum transmission power ()

• A. True
• B. False

Answer: A

NEW QUESTION 4

In the network shown in the figure below, the switch uses VLANIF interfaces to connect with the router sub-interfaces. Which of the following configurations can achieve this requirement? () (Single-choice question)

• A. interface Vlanif10Ip address10.0.12.1255.255.255.0#Interface GigabitEthernet 0/0/2Port link-type trunk Port trunk pvid 10Port trunk allow-pass vlan 10#
• B. interface Vlanif10Ip address10.0.12.1255.255.255.0#Interface GigabitEthernet 0/0/2 Port link-type trunkPort trunk allow-pass vlan 10#
• C. interface Vlanif10Ip address10.0.12.1255.255.255.0#Interface GigabitEthernet 0/0/267 Port link-type hybridPort hybrid untag vlan 10#
• D. interface Vlanif10Ip address10.0.12.1255.255.255.0#Interface GigabitEthernet 0/0/2 Port link-type accessPort default vlan 10

Answer: B

NEW QUESTION 5

Which category does the IPv6 address FE80:2E0:FCFF:FE6F:4F36 belong to? ()

• A. Link local address
• B. Global semicast address
• C. Anycast address

Answer: B

NEW QUESTION 6

When the Access type port sends a message, it will ().

• A. Add the VLAN information of the message, and then send it out
• B. Send tagged messages
• C. Strip the VLAN information of the message, and then send it out
• D. Type the PVI
• E. information of this port, and then send it out

Answer: C

NEW QUESTION 7

In order to distinguish between different users and provide different network services on the AP. Which of the following can be configured through configuration? ()

• A. VT
• B. VAP
• C. VAC
• D. WAP

Answer: A

NEW QUESTION 8

What are the advantages of using dynamic host configuration protocol DHCP to assign IP addresses? ()*

• A. Heavy workload and difficult to manage
• B. can be realized IP address reuse
• C. avoid IP address conflict
• D. When the configuration information changes (such as DNS), only the administrator needs to modify it on the DHCP server, which is convenient for unified management

Answer: BC

NEW QUESTION 9

After the network administrator uses the Tracer tRoute function on the router device, in the data packet sent by the router, the value of the Protoco1 field in the IPv4 header is?

• A. 17
• B. 2
• C. 1
• D. 6

Answer: A

NEW QUESTION 10

The configuration information of a certain interface of the router is shown in the figure. Which VILAN data packet can this port receive? ()
interface Gigabit Ethernet 0/0/2.30 dotlq terainatlon viD.100 ip address 10.0.21.1 255.255.255.0 arp broadcast enable

• A. 100
• B. 30
• C. 20

Answer: B

NEW QUESTION 11

UDP cannot guarantee the reliability of data transmission, and does not provide functions such as message sequencing and flow control. It is suitable for flows that do not require high transmission reliability, but require high transmission speed and delay ().

• A. True
• B. False

Answer: A

NEW QUESTION 12

Which of the following fields is not included in the He1lo packet of the OSPF protocol? ()

• A. sysname
• B. HelloInterval
• C. Neighbor

Answer: B

NEW QUESTION 13

Using a traditional landline to make a call is a way of network communication. ()

• A. True
• B. False

Answer: A

NEW QUESTION 14

To ensure that the same data stream is forwarded on the same physical link, which load sharing method does Eth Trunk use?

• A. Load sharing based on data packet inbound interface
• B. Packet-based load sharing
• C. Load sharing based on application layer information
• D. Flow-based load sharing

Answer: D

NEW QUESTION 15

If the Ethernet data frame Length/Type=0X0806, which statement is correct ()*

• A. The source MAC of the secondary data fram
• B. The address must not be FFFF-FFFF-FFFF
• C. This data frame is an IEEE802.3 frame
• D. The secondary data frame is Ethernet frame
• E. The destination MAC of this data fram
• F. The address may be FFFF-FFFF-FFFF

Answer: AC

NEW QUESTION 16

In the RSTP protocol, when the edge port receives the configuration BPDU message, it loses the edge port attribute. ()

• A. True
• B. False

Answer: A

NEW QUESTION 17

Which of the following statements about the default route are correct?

• A. If the destination address of the message cannot match any other routing entries in the routing table, the router will forward the message according to the default route
• B. The default route can only be manually configured by the administrator
• C. There must be a default route in the routing table of any router
• D. In the routing table, the default route appears in the form of a route to the network 0.0.0.0 (the mask is also 0.0.0.0)

Answer: AD

NEW QUESTION 18
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