Estudos HCIA BRBR2

Which fields in the IPv4 header are related to fragmentation? (Multiple Choice). TTL. Fragment Offset. Identification. Flags.

As shown in the figure below, which of the following statements are correct?. Host A can ping host B. Host A and Host B cannot obtain each other's MAC address. The following entry 10.0.12.5 MAC-B exists in the ARP cache of host A. The broadcast address of host A and host B are the same.

As the figure shown: (Multiple Choice). Client3 belongs to VLAN30, and the command for dividing VLAN on the switch is correct. Client4 belongs to VLAN40, and the command for dividing VLAN on the switch is correct. Client2 belongs to VLAN20, and the switch based on the MAC address division command is correct. Client1 belongs to VLAN10, and the command for dividing VLAN on the switch is correct.

The load sharing mode at both ends of the Eth-Trunk can be inconsistent. True. False.

When Huawei switches allow STP, the priority of the switch is by default: 32768. 8192. 16384. 4096.

As shown in the figure, the switch runs STP with default parameters, which of the following ports will be elected as the designated port?. G0/0/1 port of switch A. Port G0/0/2 of switch A. HUB's G0/0/1 port. HUB's G0/0/2 port.

What is the Solicited-node multicast address corresponding to IPv6 address 2019:: 8:AB?. FF02：：1：：FF08：AB. FF02：：FF08：AB. FF02：：1：：FF20：19. FF02：：1：：FE08：AB.

For the description of the PPP link establishment process, which of the following statement is wrong?. In the Establish phase, the PPP link performs LCP parameter negotiation. The negotiation content includes the maximum receiving unit MRU, authentication method, magic word and other options. After the NCP negotiation is successful, the PPP link will maintain the communication state and enter the Terminate phase. The Dead phase is also called the physical layer unavailable phase. When the two ends of the communication detect that the physical line is activated, they will migrate from the Dead phase to the Establish phase, which is the link establishment phase. In the Network phase, the PPP link performs NCP negotiation. Select and configure a network layer protocol through NCP negotiation, and negotiate network layer parameters. PPP link supports half-duplex and full-duplex modes.

Which statement about SNMP protocol is correct?. SNMP uses UDP as the transport layer protocol. SNMP uses ICMP as the network layer protocol. SNMP protocol uses multicast to send management messages. The SNMP protocol only supports the sending of flash management messages on the Ethernet link.

Which of the following commands can be used to view the router's CPU usage?. display cpu-state. display interface. display memory. display cpu-usage.

Which of the following messages are used for IPv6 stateless address autoconfiguration? (Multiple Choice). NS. RA. NA. RS.

Which of the following IPv6 addresses is a multicast address?. FE80：：2E0：FCFF：FEEF：FEC. FC00：：2E0：FCFF：FEEF：FEC. FF02：：2E0：FCFF：FEEF：FEC. 2000：：2E0：FCFF：FEEF：FEC.

Which of the following statements about IPv6 address configuration are correct? (Multiple Choice). IPv6 supports stateless automatic configuration. IPv6 address supports automatic configuration in multiple ways. IPv6 supports DHCPv6 for address configuration. IPv6 address can only be configured manually.

A device has been configured to complete the Telnet configuration. The device login address is 10.1.1.10. The Telnet user name is admin and the password is Huawei@123. Which of the following is the correct way to log in to this device using telnetlib?. telnetlib.Telnet（10.1.1.0,23,admin,Huawei@123）. telnetlib.Telnet（10.1.1.0）. telnetlib.Telnet（10.1.1.0,23, Huawei@123）. telnetlib.Telnet（10.1.1.0,admin）.

The classic network forwarding method is based on router routing table forwarding. The forwarding method of OpenFlow switches is based on flow table forwarding. Which of these two forwarding methods are correct? (Multiple Choice). The routing table is of fixed length. A device can only have one public routing table. The flow table is variable length. A network device can only have one flow table. The matching method of the flow table is to match the MAC address and IP address of the traffic at the same time. The matching method of the address table is to match the route of the destination network segment with the longest mask.

The router running OSPF can reach the FULL state after LSDB synchronization is completed. True. False.

In the OSPF broadcast network, which routers will a Dothter router exchange link state information with? (Multiple Choice). BDR. All OSPF neighbors. DR Other. DR.

Which of the following IPv4 addresses the host uses cannot directly access the Internet?. 100.1.1.1. 50.1.1.1. 10.1.1.1. 200.1.1.1.

What kind of message does the OSPF protocol use to confirm the received LSU message?. LSU. LSR. LSACK. LSA.

The link aggregation interface can only be used as a Layer 2 interface. True. False.

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?. Speed up port role election. Through the synchronization mechanism to ensure that no temporary loop occurs. Edge ports are introduced. Shorten the time of Forward Delay.

Which of the following statements about router-on-a-stick are correct? (Multiple Choice). Use only one physical link connection between the switch and the router. Need to create a sub-interface on the router. One physical connection per VLAN. On the switch, configure the port connected to the router as a Trunk port, and allow frames of the relevant VLAN to pass.

After the system restarts the static MAC address table, the saved entries will not be lost. True. False.

As shown in the figure below, the MAC address table of SWA is as follows. The switch can't learn the MAC address of HOST A all the time. Which of the following is impossible?. The G0/0/1 port of the switch has disabled MAC address learning. SWA turns off the MAC address learning function of the VLAN to which host A belongs. HOST A did not send any data frames. The G0/0/1 port of the switch is set to ACCESS mode.

As shown in the network below, all switches enable STP protocol. Disable SWA's G0/0/2 port configuration BPDU sending function, SWC G0/0/1 re-converges to become the root port, about this process, which of the following statements are correct? (Multiple Choice). SWC sends TCN BPDU message to SWB. SWB forwards TCN BPDU to SWA. SWB sends configuration BPDU with TCA set to SWC. SWA sends configuration BPDU with TC set.

In standard STP mode, which of the following non-root switches will forward the TC set BPDU generated by the root switch?. Designated port. Root port. Backup port. Preparation port.

The router Radius information configuration is shown in the figure. Which of the following statement is correct? (Multiple Choice). The source IP source address of the Radius packet sent by the router is 200.0.12.2. The IP address of the accounting server is 200.0.12.1. The IP address of the authorization server is 200.0.12.1. The IP address of the authentication server is 200.0.12.1.

If a windows host is started for the first time, if the IP address is obtained by DHCP, then what is the source IP address of the first packet sent by this host?. 127.0.0.1. 169.254.2.33. 0.0.0.0. 255.255.255.255.

In order to implement the FIT AP online, the FIT AP first needs to obtain the IP address of the AC. Which of the following is not included in the method of obtaining the IP address of the AC by the FIT AP?. Broadcasting method. Static designation method on AP. Multicast mode. DHCP Option mode.

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

Which of the following messages is used by AP to request software version from AC. VRP System Request. Software Request. Image Data Request. Image package Request.

The IEEE 802.11ac standard only supports the 5GHz frequency band. True. False.

To query the configuration information of the device's OSPF protocol, which of the following commands can be used? (Multiple Choice). display ospf peer. Enter the command "display this" in the OSPF protocol view. display current-configuration. dis ip routing-table.

Which of the following does not include in VRP system login method?. Telnet. Netstream. SSH. web.

In which view can the administrator modify the device name for the router?. User-view. Protocol-view. System-view. Interface-view.

If the transport layer protocol is UDP, the value of the network layer Protocol field is 6. True. False.

If the application layer protocol is Te1net, what is the value of the Protoco1 field in the IPv4 header?. 23. 17. 6. 67.

In the network shown in the figure below, host A is not configured with a gateway, and host B has the ARP cache of the gateway. Use the command ping 11.0.12.1 on host A. Which of the following statements are correct?. No data packets will be sent from host A. The IP address of the data packet sent by host A is 11.0.12.1. The destination MAC address of the data frame sent by host A is MAC-C. The destination MAC address of the data frame sent by host A is MAC-B.

Which layer of the OSI reference model does the router work at?. Data link layer. Transport layer. Application layer. Network layer.

VRP operating platform, which of the following commands can only view static routes?. display ip routing-table statistics. display ip routing-table verbose. display ip routing-table. display ip routing-table protocol static.

Which OSPF version below is suitable for IPv6?. OSPFv1. OSPFv2. OSPFv3. OSPFv4.

ip route-static 10.0.2.2 255.255.255.255 10.0.12.2 preference 20. Which is correct about this command? (Multiple Choice). The NextHop of this route is 10.0.12.2. The priority of this route is 20. This route can guide the forwarding of packets with the destination IP address 10.0.2.2. This route can guide the forwarding of packets with the destination IP address 10.0.12.2.

What are the following characteristics of the default VLAN in the Layer 2 Ethernet switch? (Multiple Choice). The default VLAN cannot be deleted manually. By default, all ports of the switch are member ports of the default VLAN. A default VLAN must be created before it can be assigned a port. The IP address configured on the switch will only be applied to the member ports of the default VLAN.

Switch stacking supports more than two devices. Through stacking, multiple switches can be grouped into one logical device. True. False.

On which layer of the OSI reference model does the Ethernet switch work?. Network layer. Data link layer. Physical layer. Transport layer.

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?. 4096 00-01-02-03-04-DD. 32768 00-01-02-03-04-AA. 32768 00-01-02-03-04-CC. 32768 00-01-02-03-04-BB.

Refer to the route-in-a-stick configuration in the figure below, it can be judged that the administrative department and the financial department can communicate with each other even if the ARP proxy is not enabled on the R1 sub-interface. True. False.

Link aggregation is a common technology in enterprise networks. Which of the following descriptions are the advantages of link aggregation technology? (Multiple Choice). Improve safety. Realize load sharing. Increase bandwidth. Improve reliability.

The network administrator configures the Huawei router RTA as shown in the figure. If a user needs to be authenticated in the authentication domain "huawei", the correct description below is (). [RTA]aaa [RTA-aaa]domain Huawei RTA-aaa-domain-huawei]authentication-s cheme aul [RTA-aaa-domain-huawei]authentication-scheme au2. "authentication-scheme aul" authentication will be used, if "au1" is deleted, "au2" authentication will be used. Will use "au2" authentication and will use "authentication-scheme au1" authentication. Will use "authentication-scheme au2" authentication. "authentication-scheme au2" authentication will be used, if "au2" is registered, "aul" authentication will be used.

In the network shown in the figure, which of the following configurations can realize that host A can access the Internet, but host B can not? (Multiple Choice). acl number 2000 rule 5 deny source 100.0.12.0 0.0.0.255 rule 10 permit source 100.0.13.0 0.0.0.255 # Interface GigabitEthernet0/0/3 traffic-filter outbound ac1 2000 #. acl number 2000 rule 5 deny source 100.0.12.0 0.0.0.255 rule 10 permit # Interface GigabitEthernet0/0/3 traffic-filter outbound ac1 2000 #. acl number 2000 rule 5 permit source 100.0.12.0 0.0.0.255 rule 10 deny source 100.0.13.0 0.0.0.255 # Interface GigabitEthernet0/0/3 traffic-filter outbound ac1 2000 #. acl number 2000 rule 5 permit source 100.0.12.0 0.0.0.255 rule 10 deny # Interface GigabitEthernet0/0/3 traffic-filter outbound ac1 2000 #.

As shown in the figure, RTA uses NAT technology and realizes multiple-to-multiple NAPT address translation by defining an address pool, so that hosts in the private network can access the public network. Suppose that there are only two public IP addresses in the address pool, and they have been assigned to hosts A and B for address conversion, and if host C also wants to access the public network, which of the following description is correct?. Host C cannot be assigned a public network address and cannot access the public network. All hosts can access the public network by using the public network address in turn. RTA converts the source port of host C, and host C can access the public network. RTA assigns the interface address (200.10.10.3) to host C, host C can access the public network.

The correct description of the information as shown in the figure is (). [R1]display interface go/0/o GigabitEthernet0/0/0 current state: Administratively DOWN Line protocol current state: DOWN. The GigabitEthernet 0/0/0 interface was manually closed by the administrator. GigabitEthernet 0/0/0 interface does not enable dynamic routing protocol. The GigabitEthernet 0/0/0 interface is not configured with an IP address. GigabitEthernet 0/0/0 interface is connected to a wrong cable.

As shown in the figure below, all switches enable the STP protocol and keep other configurations in their default state. When the network is stable, which of the following statements are correct? (Multiple Choice). Both ports of SWB are in Forwarding state. SWB is the root bridge in this network. SWA is the root bridge in this network. Both ports of SWC are in Forwarding state.

What is the total length of the IPv6 address in bits?. 96. 64. 32. 128.

The IPv4 address assigned by the network administrator to a host in the network is 192.168.1.1/28. How many hosts can be added to the network where this host is located?. 12. 15. 13. 14.

All ports on the root bridge switch are designated ports. True. False.

As shown in the figure below, host A and host B cannot communicate. True. False.

Which of the following statements about IPv6 multicast addresses are correct? (Multiple Choice). Provide redundant functions for services. Realize load sharing of services. The packet whose destination address is a multicast address will be sent to the nearest network interface in the sense of routing. Multicast addresses and unicast addresses use the same address space.

What is the number range of advanced ACL?. 3000-3999. 2000-2999. 4000~4999. 6000~6031.

The basic header length of IPv6 packets is a fixed value. True. False.

In which of the following network types does the OSPF protocol need to elect DR and BDR? (Multiple choice). Point to multipoint. NBMA. Point-to-point type. Broadcast type.

By default, how long is the lease period of the IP address assigned by the DHCP server?. 12h. 1h. 24h. 18h.

When deploying ACL on Huawei devices, which of the following description is correct? (Multiple choice). ACL can match the TCP/UDP port number of the message, and can specify the range of port numbers. The same ACL can be called under multiple interfaces. When ACL defines rules, it can only proceed in the order of 10, 20, and 30. ACL cannot be used to filter OSPF traffic, because OSPF traffic does not use UDP protocol encapsulation. When calling ACL under the interface, it can only be applied to the outbound direction.

In the network shown in the figure below, when the OSPF neighbor status is stable, what is the neighbor status of Router B and Router C?. Attempt. 2-way. Fu11. Down.

Which parameter is used in the spanning tree protocol for root bridge election?. Port ID. Bridge priority. Root path cost. Bridge ID.

MIB (Management Information Base) is a virtual database that exists only in NMS. True. False.

Now it is necessary to implement a Python automation script Te1net to the device to view the device running configuration. Which of the following statements is wrong?. Telnetlib can achieve this function. Use telnet.Telnet (host) to connect to the Telnet server. can use telnet.write(b"display current-configuration \n") to input the command to view the current configuration of the device. telnet.c1ose() is used after a command entered every time, the function is that the user waits for the switch to return information.

The network administrator of a certain company wants to uniformly divide the users who often access the company network from different switches into VLAN 10 when they frequently change office locations. Which of the following methods should be used to divide VLANs?. Divide VLAN based on protocol. Divide VLAN based on MAC address. Divide VLAN based on port. Divide VLAN based on subnet.

The picture shows the display startup information of AR2200 router. Regarding these information, which of the following statement iswrong?. next system startup file system can use the command "startup system software <startup-software-name>" to modify. The running configuration file is not saved. The system file used by the device this time is ar2220-v200r003c00spc00.cc. The system file cannot be modified when the device is started next time.

The administrator plans to implement route backup by configuring static floating routes, what is the correct way to achieve this?. The administrator needs to configure different metric values for the main static route and the standby static route. The administrator needs to configure different TAGs for the main static route and the standby static route. The administrator only needs to configure two static routes. The administrator needs to configure different protocol priority values for the main static route and the standby static route.

There are hosts in a private network that need to access the Internet. In order to achieve this requirement, which of the following configurations should the administrator do on the edge router of the network? (Multiple Choice). Default route. STP. DHCP. NAT.

Which of the following descriptions about Trunk port and Access port is correct?. Trunk port can only send untagged frames. Access port can only send untagged frames. Access port can only send tagged frames. Trunk port can only send tagged frames.

Which of the following statements about the division of OSPF protocol area is wrong?. Area 0 is the backbone area, and other areas must be connected to this area. The LSDBs in the routers in the same OSPF area are completely consistent. Dividing OSPF areas can reduce the LSDB scale of some routers. Only ABR can be used as ASBR.

NFV (Network Functional Virtualization), network function virtualization realizes the deployment of network applications in a software-based way. True. False.

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. True. False.

The administrator cannot log in to the Huawei router through Telnett, but other administrators can log in normally, so which of the following are the possible reasons? (Multiple Choice). The authority level of the administrator user account has been modified to 0. The administrator user account has been disabled. The Te1net service of the AR2200 router has been disabled. The administrator user account has been deleted.

VRP operating system commands are divided into 4 levels: access level, Monitoring level, Configuration level, and Management level. Which level can run various business configuration commands but cannot operate the file system?. Configuration level. Monitoring level. Access level. Management level.

In the VRP interface, use the command delete vrpcfg.zip to delete a file, which must be emptied in the recycle bin to completely delete the file. True. False.

Using a traditional landline to make calls is a way of network communication. True. False.

In what state does the OSPF protocol determine the master-slave relationship of DD packets?. ExStart. Full. 2-way. Exchange.

The following two configuration commands can realize the router RTA to the same destination 10.1.1.0 routing master and backup backup. 【RTA】ip route-static 10.1.1.0 24 12.1.1.1 permanent 【RTA】ip route-static 10.2.2.0 24 13.1.1.1. True. False.

In the network shown in the figure below, the bridge ID of the switch has been marked. Enter the command stp root secondary on the SWD switch, and which of the following switch will become the root bridge of this network?. SWC. SWA. SWB. SWD.

If the Length/Type of an Ethernet data frame = 0x8100, which of the following statements is correct?. There must be an IP header in the upper layer of this data frame. This data frame must carry VLAN TAG. There must be a UDP header in the upper layer of this data frame. There must be a TCP header in the upper layer of this data frame.

FAT AP can independently complete wireless user access, wireless user authentication, and business data forwarding without AC. True. False.

There is no channel overlap in the 14 available frame segments in the 185.2.4 GHz frame segment. True. False.

In the WLAN network architecture, what is terminal equipment that supports the 802.11 standard called?. Client. AC. STA. AP.

Which of the following characteristics does the OSPF protocol have? (Multiple Choice). Easy to produce routing loops. Calculate the shortest path by number. Support the division of areas. Trigger an update.

Which of the following statement about static routing is wrong?. Cannot automatically adapt to changes in network topology. Manual configuration by the network administrator. Low system performance requirements. Routers need to exchange routing information.

In the network shown in the figure below, which of the following commands can be entered on the router to enable host A to ping host B? (Multiple choice). RTA: ip route-static 10.0.12.5 255.255.255.252 11.0.12.2 RTB: ip route-static 10.0.12.1 255.255.255.252 11.0.12.1. RTA: ip route-static 10.0.12.5 255.255.255.252 11.0.12.1 RTB: ip route-static 10.0.12.1 255.255.255.252 11.0.12.2. RTA: ip route-static 0.0.0.0 0.0.0.0 11.0.12.2 RTB: ip route-static 0.0.0.0 0.0.0.0 11.0.12.1. RTA: ip route-static 0.0.0.0 0.0.0.0 11.0.12.1 RTB: ip route-static 0.0.0.0 0.0.0.0 11.0.12.2.

Which of the following IPv4 addresses can be used by a host to directly access the Internet?. 192.168.1.1/24. 172.32.1.1/24. 172.16.255.254/24. 10.255.255.254/24.

What is the value of TPID defined by IEEE802.1Q?. 0x8200. 0x7200. 0x8100. 0x9100.

As shown in the figure below, assuming the other configurations of the switch are kept in the default state, which port of the following switch will become the designated port? (Multiple Choice). SWC's G0/0/1. SWA's G0/0/3. SWC's G0/0/2. SWB's G0/0/1.

The management of users by NAS devices is based on domains. Each user belongs to a domain, and a domain is a group of users who belong to the same domain. True. False.

Which of the following fields does the MPLS header include? (Multiple choice). EXP. TTL. Label. Tos.

Huawei ARG3 series routers have all SNMP versions (SNMPv1, SNMPv2c and SNMPv3) by default. True. False.

IPv6 address 2001: ABEF: 2240E: FFE2: BCC0: CD0: DDBE: 8D58 cannot be abbreviated. True. False.

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

The tracert diagnostic tool in Huawei routers is used to track the data forwarding path. True. False.

The routing table output information of a router is shown in the figure. Which of the following statements is correct? (Multiple choice). the local router to the NextHop of 10.0.2.2 is 10.0.21.2. the local router to the NextHop of 10.0.2.1 is 10.0.21.2. the local router to the NextHop of 10.0.2.2 is 10.0.12.2. the local router to the NextHop of 10.0.0.1 is 10.0.12.2.