Estudo para Certificação 4

The CAPWAP protocol specifies the communication standard between the AC and the AP. Which of the following statements about the CAPWAP protocol is correct?. CAPWAP is an application layer protocol based on TCP transmission. In order to reduce the burden on the AP, CAPWAP uses a tunnel to transmit control messages and data messages at the same time. The AP can encapsulate the user's data packet in CAPWAP and hand it over to the AC for forwarding. In order to establish a CAPWAP tunnel, the Fit AP can only discover the AC through broadcast packets.

The FIT AP can obtain the IP address of the AC through the DHCP Option to establish a CAPWAP tunnel. Which Option should be configured on the DHCP server?. Option 10. Option 55. Option 43. Option 82.

How many types of data flows with different service levels can be marked at most based on MPLS labels?. 8. 2. 4. 16.

An explicit path can be easily defined through SR (Segment Routing). Nodes in the network only need to maintain Segment Routing information to cope with real-time and rapid business development. What are the following characteristics of Segment Routing? (Multiple choice). SR (Segment Routing) uses IP forwarding, and does not need to maintain another label forwarding table. Support the centralized control mode of the controller and the distributed control mode of the transponder at the same time, providing a balance between centralized control and distributed control. By extending existing protocols (such as IGP), the existing network can evolve smoothly. Using source routing technology to provide the ability to quickly interact between the network and upper-layer applications.

Which of the following port numbers is used by network devices running SNMPv2c protocol to send Trap messages to the network management system by default?. 161. 6. 162. 17.

In the STP protocol, the Message Age in the configuration BPDU sent by the root bridge is 0. True. False.

Which of the following protocols does the RA packet used by IPv6 stateless autoconfiguration belong to?. UDPv6. ICMPv6. IGMPv6. TCPv6.

Which of the following IPv6 addresses is a global unicast address?. 2001::12:1. FE80::2E0:FCFF:FEEF:FEC. FF02::2E0:FCFF:FEEF:FEC. FF02::1.

The origin of SDN is the separation of transfer and control. Separation of control and control is a method but not the essence of realizing SDN. True. False.

How many more bytes are there in the packet using MPLS label double nesting technology than the original IP packet?. 8. 32. 16. 4.

Use the command mkdir test on the VRP operating platform, and the system will create a directory named test. True. False.

Both the pwd and dir commands in the VRP operating platform can view the file information in the current directory. True. False.

How many types of OSPF packets are there?. 3. 5. 2. 4.

The Router ID of 0SPF must be the same as an interface IP address of the router. True. False.

Which of the following commands can be used to check whether OSPR has correctly established a neighbor relationship?. display ospf interface. display ospf peer. display ospf neighbor. display ospf brief.

Which of the following routing protocols has the highest priority?. Static. OSPF. Direct. RIP.

A host can directly use which of the following IPv4 addresses to directly access the Internet?. 172.16.255.254/24. 10.255.255.254/24. 192.168.1.1/24. 172.32.1.1/24.

The priority of static routing protocols cannot be manually specified. True. False.

The output information of a certain router is shown in the figure, which of the following statements is correct? (Multiple choice) <R1>display ospf interface verbose OSPF Process 1 with Router ID 10.0.1.1 Interfaces Area: 0.0.0.0 (MPLS TE not enabled) Interface: 10.0.12.1 (GigabitEthernet0/0/0) Cost: 1 State: BDR Type: Broadcast MTU:1500 Priority: 1 Designated Router: 10.0.12.2 Backup Designated Router: 10.0.12.1 Timers: Hello 10 , Dead 40 , Poll 120 , Retransmit 5 , Transmit Delay 1 IO Statistics Type Input Output Hello 66 65 DB Description 2 3 Link-State Req 0 1 Link-State Update 3 2 Link-State Ack 2 2 ALLSPF GROUP ALLDR GROUP OpaqueId: 0 PrevState: Waiting Effective cost: 1, enabled by OSPF Protocol. The DR priority of this routing interface is 10. The cost value of this interface is 1. This router is BDR. Router ID is 10.0.1.1.

If the Proto of a certain routing information in the routing table is OSPF, then the priority of this routing must be 10. True. False.

Which of the following statements about static routing in Huawei equipment is wrong?. When the priority of a static route is 0, the route will definitely be preferred. The cost value (Cost) of the static route cannot be modified. The default value of static route priority is 60. The range of static route priority value is 1-255.

On a broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages. True. False.

Which state does the OSPF protocol use to indicate that the adjacency relationship has been established?. 2-way. Full. Down. Attempt.

On the VRP platform, what is the order of the default protocol priorities of direct routes, static routes, RIP, and OSPF intra-area routes from high to low?. Direct routing, OSPF, RIP, static routing. Direct routing, static routing, RIP, OSPF. Direct routing, OSPF, static routing, RIP. Direct routing, RIP, static routing, OSPF.

How to deal with when the Access port sends data frames?. Mark PVID forwarding. Send a message with TAG. Replace VLAN TAG forwarding. Strip TAG forwarding.

Trunk ports can send both labeled data frames and unlabeled data frames. True. False.

In the network shown in the figure below, in the MAC address tables of SWA and SWB, which of the MAC address, VLAN, and port correspondences are correct? (Multiple choice) SWA SWB [ Switch ] [ Switch ] | G0/0/3 ------------------- G0/0/3 | | ----------+---------- | | G0/0/1 (PVID 10) G0/0/2 (PVID 20) | | HOST A HOST B IP: 10.1.12.1/24 IP: 10.1.12.2/24 MAC: MAC-A MAC: MAC-B | G0/0/1 (PVID 100) | HOST C IP: 10.1.12.3/24 MAC: MAC-C SWA: interface GigabitEthernet 0/0/1 port hybrid pvid vlan 10 port hybrid untagged vlan 10 100 # interface GigabitEthernet 0/0/2 port hybrid pvid vlan 20 port hybrid untagged vlan 20 100 # interface GigabitEthernet 0/0/3 port hybrid tagged vlan 10 20 100 # SWB: interface GigabitEthernet 0/0/1 port hybrid pvid vlan 100 port hybrid untagged vlan 10 20 100 # interface GigabitEthernet 0/0/3 port hybrid tagged vlan 10 20 100 #. SWB: MAC Address VLAN Port MAC-A 100 GE0/0/3 MAC-B 200 GE0/0/3 MAC-C 100 GE0/0/1. SWA: MAC Address VLAN Port MAC-A 10 GE0/0/1 MAC-B 20 GE0/0/2 MAC-C 100 GE0/0/3. SWB: MAC Address VLAN Port MAC-A 10 GE0/0/3 MAC-B 20 GE0/0/3 MAC-C 100 GE0/0/1. SWA: MAC Address VLAN Port MAC-A 10 GE0/0/3 MAC-B 20 GE0/0/3 MAC-C 100 GE0/0/3.

In the STP protocol, assuming that all switches are configured with the same priority, the MAC address of switch 1 is 00-e0-fc-00-00-40, and the MAC address of switch 2 is 00-e0-fc-00-00 -10 The MAC address of switch 3 is 00-e0-fc-00-00-20, and the MAC address of switch 4 is 00-e0-fc-00-00-80, so the root switch should be?. Switch 3. Switch 4. Switch 2. Switch 1.

When the port of the switch receives a data frame without VLAN TAG, it must add PVID. True. False.

In the RSTP protocol, when an edge port receives a configuration BPDU message, it loses the edge port attribute. True. False.

The LACP mode of link aggregation uses LACPDU to elect the active end. What information in the LACPDU is the basis for electing the LACP active end? (Multiple choice). Interface number. Interface priority. Device priority. MAC address.

In which working state of the port in the STP protocol can it be transferred to the Forwarding state without going through other states?. Listening. Learning. Disabled. Blocking.

Hybrid ports can be connected to both user hosts and other switches. True. False.

The configuration information of the switch G0/0/1 port is shown in the figure, which VLAN data frame does not carry the VLAN TAG when the switch forwards? # interface GigabitEthernet0/0/1 port link-type trunk port trunk pvid vlan 10 port trunk allow-pass vlan 10 20 30 40 #. 10. 30. 20. 40.

On the switch, which VLANs can be deleted by using the undo command? (Multiple choice). Vlan 1. Vlan 2. Vlan 1024. Vlan 4094.

Which of the following is not the reason why RSTP can improve the convergence speed?. Fast switchover of the root port. Introduction of edge ports. Cancel Forward Delay. P/A Mechanism.

A company has 50 private IP addresses. The administrator uses NAT technology to connect the company network to the public network, but the company only has one public network address and it is not fixed. Which of the following LNAT conversion methods meets the requirements?. NAPT. Basic NAT. Static NAT. easy-ip.

Which of the following parameters cannot be used in advanced access control lists?. Time frame. Destination port number. Physical interface. Agreement number.

An ACL rule is as follows: Which of the following IP addresses can be matched by the permit rule rule 5 permit ip source 10.0.2.0 0.0.254.255? (Multiple choice). 7.1.2.1. 9.1.1.1. 8.2.2.1. 6.1.3.1.

Among the following options, what is the necessary technology to enable a host with an IP address of 10.0.0.1 to access the Internet?. Static routing. Dynamic Routing. NAT. Route import.

The following rules exist in an ACL of a router: rule deny tcp source 192.168.2.0 0.0.0.255 destination 172.16.10.2 0.0.0.0 Which of the following statements is correct?. All TCP packets with source IP 192.168.2.1 and destination IP 172.16.10.1 match this rule. All TCP packets with source IP 192.168.2.1 and destination IP 172.16.10.2 match this rule. All TCP packets whose source IP is 172.16.10.2 and destination IP is 192.168.2.1 match this rule. All TCP packets whose source IP is 172.16.10.2 and destination IP is 192.168.2.0 match this rule.

Which of the following applications is based on the TCP protocol? (Multiple choice). TFTP. FTP. HTTP. Ping.

What is the port number used by the FTP protocol control plane?. 23. 21. 22. 24.

When using FTP for file transfer, how many TCP connections will be established?. 1. 2. 3. 4.

How to add AP on AC? (Multiple choice). Import AP offline. Manually confirm the AP in the unauthenticated list. Automatically discover APs. Add online.

In order to join a wireless network, TA needs to obtain wireless network information first. Which of the following messages does STA use to actively obtain SSID information?. Join. Discovery. Beacon. Probe.

In order for the STA to obtain SSID-related information on the AP, which of the following messages does the AP use to actively declare the wireless network SSID information?. Join. Beacon. Discovery. Probe.

After the link authentication is completed, the STA will continue to initiate link service negotiation. The specific negotiation is realized through which of the following messages?. Association. Negotiate. Handshake. Join.

Which field is added to the IPv6 header compared to the IPv4 header?. Destination Address. Source Address. Flow Label. Version.

User cannot configure VLAN ID as 0. True. False.