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NEW QUESTION 186
In the MAC address table of the switch, which of the following entries will not age?
- A. Static MAC address table entry
- B. Dynamic MAC address table entry
- C. Device MAC address table entry
- D. Port MAC address table entry
Answer: A
NEW QUESTION 187
On the broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages.
- A. False
- B. True
Answer: A
NEW QUESTION 188
Link aggregation is a common technology in enterprise networks. Which of the following descriptions are the advantages of link aggregation technology?
- A. Improve safety
- B. Improve reliability
- C. Realize load sharing
- D. Increase bandwidth
Answer: B,C,D
NEW QUESTION 189
When we search for accessible wireless networks on our laptop, what is the actual network name displayed?
- A. SSID
- B. BSS
- C. BSSID
- D. ESS
Answer: A
NEW QUESTION 190
On the switch, which VLANs can be deleted by using the undo command?
- A. vlan1024
- B. vlan2
- C. v1an1
- D. vlan4094
Answer: A,B,D
NEW QUESTION 191
The administrator finds that the two routers stay in the 2-WAY state when establishing OSP neighbors, then the following description is correct ().
- A. The router is configured with the same process ID
- B. The router is configured with the same area ID
- C. These two routers are DR0ther routers in the broadcast network
- D. The router is configured with the wrong Router ID
Answer: C
NEW QUESTION 192
As shown in the following figure, the ports of switch A and switch B connecting to the host belong to VLAN
10 and VL.AN 20, respectively. The switch interconnection port type is Trunk. PVID is 10 and 20 respectively. Which of the following statements are correct?
- A. Host A and Host B belong to different VLANs and cannot ping each other
- B. The ARP request from host A cannot be forwarded to host B
- C. Host A and Host B can be pinged
- D. Do not carry VLAN TAG when forwarding data frames sent by the host between switches
Answer: C,D
NEW QUESTION 193
Which of the following IPv6 addresses can be abbreviated as 2FFF:DAC:ABEF::CDAA:732?
- A. 2FFF:0DAC:ABEF:0000:0000:0000:CDAA:0732
- B. 2FFF:DAC0:ABEF:0000:0000:0000:CDAA:0732
- C. 2FFF: 0DAC: ABEF: 0000: 0000: CDAA: 0732
- D. 2FFF:0DAC:ABEF:0000:0000:0000:CDAA:7320
Answer: A
NEW QUESTION 194
The ACL on AR G3 series routers supports two matching sequences. Configuration order and automatic sorting.
- A. False
- B. True
Answer: B
NEW QUESTION 195
When using FTP for file transfer, how many TCP connections will be established?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 196
Which of the following fields are present in both IPv6 and IPv4 packet headers?
- A. Next Header
- B. Destination Address
- C. Version
- D. Source Address
Answer: B,C,D
NEW QUESTION 197
If the Ethernet data frame Length/Type=0x0806, which of the following statements is correct?
- A. The source MAC address of this data frame must not be FFFF-FFFF-FFFFF
- B. This data frame is EthernetII frame
- C. This data frame is an IEEE802.3 frame
- D. The destination MAC address of this data frame may be FFFF-FFFF-FFFFF
Answer: A,B,D
NEW QUESTION 198
The two switches shown in the figure below have both enabled the STP protocol. An engineer made the following conclusions on this network. Which conclusion do you think is correct?
- A. The G0/0/3 port of SWA is stable in Forwarding state
- B. Both ports of SWA are designated this port
- C. The G0/0/2 port of SWA is stable in the Forwarding state
- D. The G0/0/2 vertical port of SWB is stable in Forwarding state
Answer: A,B,C,D
NEW QUESTION 199
What does the command port trunk allow-pass vlan all do?
- A. All VLAN data frames are allowed to pass on this port
- B. The opposite port connected to the port must be configured with port trunk permit vlan all at the same time
- C. If the port default vlan 3 command is configured for the connected remote device, the VLAN 3 between the two devices cannot communicate
- D. The connected peer device can dynamically determine which VLAN IDs are allowed to pass
Answer: A
NEW QUESTION 200
As shown in the figure below, the MAC address table of SWA is as follows. The switch never learns the MAC address of host A.
Which of the following is impossible?
- A. HOSTA did not send any data frames
- B. The G0/0/1 port of the switch has disabled MAC address learning
- C. The G0/0/1 port of the switch is set to ACCESS mode
- D. SWA disables the MAC address learning function of the VLAN to which host A belongs
Answer: C
NEW QUESTION 201
Which of the following messages are used for IPv6 stateless address autoconfiguration?
- A. NS
- B. RA
- C. NA
- D. RS
Answer: B,D
NEW QUESTION 202
In the broadcast network shown in the figure, OSPF runs on four routers in the same area and on the same network segment. OSPF will automatically elect one DR and multiple BDRs to achieve a better backup effect.
- A. False
- B. True
Answer: A
NEW QUESTION 203
If the administrator wants to update the VRP version of Huawei routers, the correct method is ().
- A. The administrator configures the router as an FTP client and transfers the VRP software through FTP
- B. The administrator configures the router as a TFTP client and transmits VRP software through TFTP
- C. The administrator configures the router as a TFTP server and transmits VRP software through TFTP
- D. The administrator configures the router as an FTP server and transfers the VRP software through FTP
Answer: A,B,D
NEW QUESTION 204
Which extension headers are supported by IPv6 packets?
- A. Fragmentation extension header
- B. Hop-by-hop option extension header
- C. Destination Option Extension Header
- D. VLAN extension header
Answer: A,B,C
NEW QUESTION 205
What is correct about the dynamic MAC address table?
- A. After the device restarts, the previous dynamic entries will be lost
- B. The dynamic MAC table entries obtained through the source MAC address learning in the message will age
- C. By viewing the number of specified dynamic MAC address table entries, you can get the number of users communicating under the interface
- D. After the device restarts, the previously saved entries will not be lost
Answer: A,B,C
NEW QUESTION 206
The function of OSPF's hello message is ().
- A. Update LSA information
- B. Neighbor Discovery
- C. Maintain neighbor relations
- D. Synchronize router LSDB
Answer: B,C
NEW QUESTION 207
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