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NEW QUESTION 71
What is correct about the dynamic MAC address table?
- A. By viewing the number of specified dynamic MAC address table entries, you can get the number of users communicating under the interface
- B. After the device restarts, the previous dynamic entries will be lost
- C. The dynamic MAC table entries obtained through the source MAC address learning in the message will age
- D. After the device restarts, the previously saved entries will not be lost
Answer: A,B,C
NEW QUESTION 72
The controller is the core component of SDN. The controller connects to the device through the southbound interface. Which of the following belong to the controller southbound protocol?
- A. NETCONF
- B. SNMP
- C. OpenFlow
- D. PCEP
Answer: A,B,C,D
NEW QUESTION 73
In the RSTP protocol, when the root port fails, () will quickly convert to the new root port and immediately enter the forwarding state.
- A. Alternate port
- B. Backup port
- C. Forwarding port
- D. Edge port
Answer: A
NEW QUESTION 74
The DHCP OFFER message can carry a DNS address, but it can only carry one DNS address.
- A. False
- B. True
Answer: A
NEW QUESTION 75
What is the role of link aggregation?
- A. Improve network reliability
- B. Realize load sharing
- C. Facilitate analysis of data
- D. Increase bandwidth
Answer: A,B,D
NEW QUESTION 76
Which version of the SNMP protocol below supports encryption features?
- A. SNMPv3
- B. SNMPv1
- C. SNMPv2c
- D. SNMPv2
Answer: A
NEW QUESTION 77
What is the number range of Layer 2 ACLs?
- A. 3000-3999
- B. 4000~4999
- C. 6000~6031
- D. 2000-2999
Answer: B
NEW QUESTION 78
What is the IEEE802.11 standard corresponding to Wi-Fi6?
- A. 802.1lac
- B. 802. llau
- C. 802. 1lat
- D. 802.1lax
Answer: D
NEW QUESTION 79
The FIT AP can obtain the IP address of the AC through the DHCP option to establish a CAPWAP tunnel.
Which option needs to be configured on the DHCP server for this?
- A. Option 43
- B. Option 82
- C. Option 55
- D. Option 10
Answer: A
NEW QUESTION 80
Which of the configurations in the following options belong to a Layer 2 ACL?
- A. rule 25 permit source 192.168.1.1 0.0.0.0
- B. rule 10 permit 12-protocol arp
- C. rule 20 permit source-mac 0203-0405-0607B
- D. rule 15 permit vlan-id 100
Answer: B,C,D
NEW QUESTION 81
Telnetlib is a module that implements the Telnet protocol that comes with Python.
- A. True
- B. False
Answer: A
NEW QUESTION 82
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 83
About the correct description of the information as shown in the figure is.
- A. The GigabitEthernet 0/0/0 interface is not configured with an IP address
- B. The dynamic routing protocol is not enabled on the GigabitEthernet 0/0/0 interface
- C. The wrong cable is connected to the GigabitEthernet 0/0/0 interface
- D. The GigabitEthernet 0/0/0 interface was manually closed by the administrator
Answer: D
NEW QUESTION 84
The link aggregation interface can only be used as a Layer 2 interface.
- A. False
- B. True
Answer: A
NEW QUESTION 85
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 86
The network administrator hopes to be able to effectively use the IP address in the same segment of
192.168.176.0/25. Now the company's marketing department has 20 mainframes. Which of the following address segments is best allocated to the marketing department?
- A. 192.168.176.160/27
- B. 192.168.176.96/27
- C. 192.168.176.0/25
- D. 192.168.176.48/29
Answer: B
NEW QUESTION 87
The wireless access controller (AC, Access Controller) is the overall management and control device in the FIT AP architecture. What is wrong about the role of AC in the following description?
- A. AP configuration delivery
- B. Regardless of the data forwarding method, the user's data packets are forwarded by the AC
- C. User access authentication
- D. User access control
Answer: B
NEW QUESTION 88
Network administrators use Ping to test the connectivity of the network. Which of the following protocols may be used in this process?
- A. UDP
- B. TCP
- C. ICMP
- D. ARP
Answer: C,D
NEW QUESTION 89
What command line views exist on the VRP operating platform?
- A. Interface view
- B. Agreement view
- C. User view
- D. System view
Answer: C
NEW QUESTION 90
The administrator configures OSPF on a router, but the loopback interface is not configured on the router. The following correct description of the Router ID is.
- A. The priority of the router will become the Router ID
- B. The IP address of the router's management interface will become the Router ID
- C. The largest IP address of the physical interface of the router will become the Router ID
- D. The smallest IP address of the router's physical interface will become the Router ID
Answer: C
NEW QUESTION 91
Which of the following IPv6 addresses is a link local address?
- A. FE80::2E0:FCFF:FEEF:FEC
- B. FC00::2E0:FCFF:FEEF:FEC
- C. 2000::2E0:FCFF:FEEF:FEC
- D. FF02::2E0:FCFF:FEEF:FEC
Answer: A
NEW QUESTION 92
The three layer switches are interconnected with one machine core, and all switches enable the STP function.
Please refer to the figure below for the bridge ID setting of the switch STP. Others are the default configuration. The following statement is.
- A. SWA is the root bridge in the simple network
- B. Both ports of SWA are designated ports and are in the forwarding state
- C. The G0/0/1 port of SWC is an alternative port and is in a blocking state
- D. The G0/0/2 port of SWA is blocked
Answer: B
NEW QUESTION 93
When planning a campus network, you can plan VLANs according to business types.
- A. True
- B. False
Answer: A
NEW QUESTION 94
Which information of the data frame is used by the VLANIF interface to determine whether to forward Layer
2 or Layer 3 forwarding?
- A. purpose MAC
- B. source IP
- C. source MAC
- D. destination port
Answer: A
NEW QUESTION 95
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