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NEW QUESTION 254
As shown in the information in the figure, when learning this switch needs to forward the frame with the destination MAC address of 5489-98ec-f011, which of the following description is correct?
- A. The switch does not find a matching entry in the MAC address table, so it will discard the frame
- B. The switch needs to send a request to discover the device with the MAC address of 5489 98ec-f011
- C. The switch will send a message that the destination is unreachable to the source device
- D. The switch will flood the frame on all ports except the port that received the frame
Answer: D
NEW QUESTION 255
The function of 0SPF hello message is (). (Multiple Choice)
- A. Synchronize the LSDB of the router
- B. Maintain neighbor relations
- C. Neighbor discovery
- D. Update LSA information
Answer: B,C
NEW QUESTION 256
The switch receives a unicast data frame. If the destination MAC of the data frame can be found in the MAC table, the data frame will be forwarded from the corresponding MAC port.
- A. TRUE
- B. False
Answer: A
NEW QUESTION 257
In the switch MAC address table, which of the following entries will not age?
- A. Device MAC address table entry
- B. Dynamic MAC address table entry
- C. Static MAC address table entry
- D. Port MAC address table entry
Answer: C
NEW QUESTION 258
The bridge ID of the STP protocol in the switching network is as follows. Which of the following bridge ID switches will become the root bridge?
- A. 32768 00-01-02-03-04-CC
- B. 4096 00-01-02-03-04-DD
- C. 32768 00-01-02-03-04-AA
- D. 32768 00-01-02-03-04-BB
Answer: B
NEW QUESTION 259
Which of the following functions does the LCP protocol in the PPP protocol support?
- A. Negotiate network layer address
- B. Negotiate the maximum receiving unit MRU
- C. Detect link loops
- D. Negotiate authentication agreement
Answer: B,C
NEW QUESTION 260
What is the maximum negotiation rate supported by the IEEE 802.llg standard?
- A. 1200Mbps
- B. 300Mbps
- C. 150Mbps
- D. 54Kbps
Answer: D
NEW QUESTION 261
What elements can NAPT convert?
- A. MAC address + port number
- B. Only MAC address
- C. Only IP address
- D. IP address + port number
Answer: D
NEW QUESTION 262
As shown in the figure, if host A has the ARP cache of host B, host A can ping host B.
- A. False
- B. True
Answer: A
NEW QUESTION 263
If the Ethernet data frame Length/Type=0X0806, which of the following statement is correct? (Multiple choice)
- A. The source MAC address of the data frame must not be FFFF-FFFF-FFFF
- B. The data frame is an Ethernet II frame
- C. The data frame is an IEEE 802.3 frame
- D. The destination MAC address of the data frame may be FFFF-FFFF-FFFF
Answer: A,B
NEW QUESTION 264
Which of the following types does IPv6 address contain?
- A. Broadcast address
- B. Multicast address
- C. Anycast address
- D. Unicast address
Answer: B,C,D
NEW QUESTION 265
Which of the following attributes cannot be used as a parameter to measure Cost? (Multiple choice)
- A. Hop count
- B. Bandwidth
- C. Delay
- D. Sysname
Answer: C,D
NEW QUESTION 266
The routing table output information of a router is shown in the figure. Which of the following statements is correct? (Multiple choice)
- A. the local router to the NextHop of 10.0.0.1 is 10.0.12.2
- B. the local router to the NextHop of 10.0.2.2 is 10.0.12.2
- C. the local router to the NextHop of 10.0.2.2 is 10.0.21.2
- D. the local router to the NextHop of 10.0.2.1 is 10.0.21.2
Answer: A,C
NEW QUESTION 267
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 with low transmission reliability requirements but high transmission speed and delay requirements.
- A. True
- B. False
Answer: A
NEW QUESTION 268
Which of the following types of addresses is not included in IPv6 addresses?
- A. Broadcast address
- B. Unicast address
- C. Multicast address
- D. Anycast address
Answer: A
NEW QUESTION 269
Which of the following statement about static routing in Huawei equipment is wrong?
- A. When the priority of the static route is 0, the route will definitely be preferred.
- B. The range of the static route priority value is 1-255
- C. The cost value (Cost) of the static route cannot be modified.
- D. The default value of the static route priority is 60
Answer: B
NEW QUESTION 270
In which view can the administrator modify the device name for the router?
- A. System-view
- B. Protocol-view
- C. User-view
- D. Interface-view
Answer: A
NEW QUESTION 271
Which of the following fields is not included in the HELLO packet of the OSPF protocol?
- A. Network mask
- B. Hellointerval
- C. Neighbor
- D. Sysname
Answer: D
NEW QUESTION 272
The RSTP protocol uses the P/A mechanism to speed up the speed of the upstream port to the Forwarding state, but what is the reason why there is no temporary loop?
- A. Edge ports are introduced
- B. Shorten the time of Forward Delay
- C. Speed up port role election
- D. Through the synchronization mechanism to ensure that no temporary loop occurs
Answer: D
NEW QUESTION 273
What percentage does the DHCP client expect to send the lease renewal message for the first time?
- A. 0.5
- B. 0.875
- C. 0
- D. 0.25
Answer: A
NEW QUESTION 274
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