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By default, what is the period for sending 0SPF HELLO packets on the broadcast network? ()
Broadcast network. OSPF runs on four routers in the same area. Same network segment. OSPF will automatically elect one DR and multiple BDRs to achieve better backup results
As shown in the figure below, assuming that the MAC address table of SWA. is as follows, now host A. sends a data frame with a destination MAC address of MAC-B. Which of the following statements is correct? ()
The Layer 2 networking of WLAN refers to STA. It uses AC as its own gateway. ()
The administrator configures R1 as shown in the figure. But R1 cannot learn the routes of other routers, so it may be.
The reason is? () (Multiple Choice Questions)
Which of the following IPv4 addresses the host uses cannot directly access the Internet? ()
When two OSPF routers form a 2-WAY neighbor relationship, LSDB. has been synchronized. ()
OSPF Router ID. It must be the same as the IP address of an interface on the router.
Which of the following statements about the routing table shown in the figure are true?
TION NO: 58
If the MAC address of an interface is 00E0-FCEF-0FEC, the corresponding EUI-64 address is ( ).
Which of the following is correct regarding the configuration of the trunk port and access port on a switch?
In the following figure, all links are Ethernet links, and all interfaces on the routers are running OSPF. Given this, how many DRs will be elected on this network?
On the VRP platform, which of the following parameters can be used together with the "ping" command to specify the source address of an echo request message?
Which of the following are true about the Ethernet data frame with the "Length/Type" field being 0x0806?
If Proto of a route displayed in the routing table is OSPF, the preference of the route must be 10.
Assuming all STP enabled switches have the same bridge priority. The MAC address of switch A is 00-e0-fc-00-00-40, the MAC address of switch B is 00-e0-fc-00-00-10, the MAC address of switch C is 00-e0-fc-00-00-20, and the MAC address of switch D is 00-e0-fc-00-00-80. Which switch will be elected as the root switch?
When the ACL in the following figure is configured on a Telnet server, only the device with an IP address of 172.16.105.2 can remotely log in to the Telnet server.
bash
Copy code
acl number 2000
rule 5 permit source 172.16.105.2 0
Which of the following operations are mandatory to restore the factory default settings of an AR2200 router?
An ACL is essentially a packet filter. An ACL takes effect only after it is applied to a service module.
After a switch restarts, static MAC address entries saved on the switch remain in the MAC address table.
In RSTP, an edge port becomes a common STP port after receiving a configuration BPDU.
RSTP uses the proposal/agreement mechanism to shorten the time that an upstream port waits before transitioning to the Forwarding state, but no temporary loop occurs. Why?
A Layer 2 ACL can match information such as the source MAC address, destination MAC address, source IP address, and destination IP address.
UDP does not guarantee data transmission reliability and does not provide packet sorting and traffic control functions. It is suitable for the traffic that has low requirements for data transmission reliability, but high requirements for the transmission speed and delay.
When a switch receives a unicast data frame, if the destination MAC address of the data frame can be found in the MAC address table of the switch, the data frame is definitely forwarded through the port corresponding to the MAC address.
What is the length range of an Ethernet_II frame that contains an Ethernet header?
A Layer 2 switch works at the data link layer. As such, it can identify MAC addresses in data frames, forward data based on MAC addresses, and record mappings between MAC addresses and interface numbers in its MAC address table.
Which statement is true regarding the following command?
ip route-static 10.0.12.0 255.255.255.0 192.168.1.1
Which of the following advantages is/are provided by inter-VLAN routing in one-arm routing mode?
The following is the statement about the election of active ports in link aggregation LACP mode. the correct one is? ()
A company applies for a C. address segment, which needs to be evenly distributed to 8 subsidiaries. The largest subsidiary has 14 computers. Different subsidiaries must be in different network segments. The subnet mask should be designed as ( )
The following statement about the TTL field in the IP packet header is correct. ()
How many types of data flows with different service levels can be marked based on MPLS labels? ()
The configuration information of a certain interface of the router is shown in the figure. Which VILAN data packet can this port receive? ()
interface Gigabit Ethernet 0/0/2.30 dotlq terainatlon viD.100 ip address 10.0.21.1 255.255.255.0 arp broadcast enable
The switch becomes a logical switch after stacking and clustering, and Eth-Trunk across physical devices can be deployed to improve network reliability. ()
Switch stacking supports more than two devices, and multiple switches can be grouped into a logical device through stacking. ()
A certain ACL of the router is in the following rules, rule deny source192.168.2.00.0.0.255 destination 172.16.10.20.0.0.0 Which of the following statements is correct? ()
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 that do not require high transmission reliability, but require high transmission speed and delay ().
In the RSTP standard, in order to improve the convergence speed, the port that the switch is directly connected to the terminal can be defined as ()
In order to implement FIT AP online, FIT AP first needs to obtain the IP address of AC. Which of the following options is not included in FITAP obtaining the IP address of AC. ()
For the Versatile Routing Platform (VRP), the login timeout period can be set only on a VTY interface.
With SNMP, an NMS can only display the device running status but cannot deliver configurations.
Which of the following statements is true about link aggregation in manual load balancing mode?
Which of the following descriptions regarding the TTL field of the IP packet is correct?
As shown in the figure, if host A has the ARP cache of host B, host A can ping host B.
If a device running STP receives an RSTP configuration BPDU, it discards the BPDU.
To provide the information about the IP addresses that a user packet traverses along the path to the destination, which of the following does Tracert record in each expired ICMP TTL packet?
Which of the following statements is true about the Forward Delay timer of STP?
When two switches are connected through link aggregation, what are the requirements for the interfaces on the two switches?
In a broadcast address, all host bits are set to 1, and a broadcast address can be used as a host address.
The tree topology is a hierarchical star topology, facilitating network expansion. A consequence of this topology is that faults on a node at a higher layer are more severe.
Which of the following statements regarding static routing and dynamic routing is incorrect?
The router that runs OSPF first enters the Full state and then synchronizes the LSDB.
The TCP protocol uses the three-way handshake mechanism to establish and disable connections. Therefore, TCP supports reliable data transmission.
According to the following configuration, which statement is correct? () (Multiple Choice Questions)
Int g0/0/1
Int g0/0/2
Port hybrid pvid vlan 20
Port hybrid pvid vlan 10
Port hybrid untagged vlan 10 20
Port hybrid untagged vlan 10 20
If the value of the "Type/Length" field of an Ethernet data frame is 0x0800, the length range of the upper-layer packet header carried by the data frame is from 20B to 60B.
According to the one-armed routing configurations shown in the figure, even if ARP proxy is disabled on the sub-interface of R1, the Administration Dept and Finance Dept can still communicate with each other.
If the transport-layer protocol is UDP, the value of the "Protocol" field at the network layer is 6.
When an Ethernet frame is received by an interface on a Layer 2 Ethernet switch, which field is used to generate an entry in the MAC address table?
If the broadcast address of a network is 172.16.1.255, which of the following addresses is the network address?
The country code configuration affects the actual transmission frequency and maximum transmission power.
In order to realize the network layer function on the VLANIIF interface, need to be configured on the VLANIF interface? ()*
In order to detect the connectivity status of the CAPWAP tunnel, after the CAPWAP tunnel is established, which of the following CAPTAP messages is used by the AC for detection? ()*
The NAT configuration is as follows, which IP can be converted when accessing the public network (RTA) acl2000 (RTA-acl-basic-2000) rule5 permit source 192.168.1.00.0.0.255 RTA-acl-basic-2000) rule 10 deny source 192.168. 1.30
(RTA-acl-basic-2000) quit RTA) interface serial1/0/0 (RTA-Serial1/0/0) nat outbounD.2000*
Which devices are generally involved in wlan deployment schemes in enterprise scenarios? ()*
The administrator cannot log in to the Huawei router through Telnet, but other administrators can log in normally, so which of the following are the possible reasons? ()*
The network is shown in the figure below. The router uses a sub-interface as the host gateway. The gateway IP address is 10.0.12.2. Which of the following commands can achieve this requirement? () (Multiple Choice Questions)
In the network shown in the figure below, there are the following configurations in Router A. Which of the following statements is correct?
ip route-statiC.10.0.2.2255.255.255.25510.0.12.2iP
Route-statiC.10.0.2.2255.255.255.25510.0.21.2pre ference 70
Which of the following MAC addresses cannot be used as the MAC address of the host network card? ()*
As shown in the figure below, are the following statements correct? () (Multiple Choice Questions)
On Huawei ARG3 series routers, what authentication modes does AAA. support? ()
If the network administrator assigns the IPv4 address 192.168.1.1/28 to a host on the network, how many hosts can be added to the network where the host resides?
The router ID of the OSPF process takes effect immediately after being changed.
Which of the following port states is not included in Rapid Spanning Tree Protocol (RSTP)?
The TCP protocol uses the three-way handshake mechanism to establish and disable connections. Therefore, TCP supports reliable data transmission.
Which of the configurations in the following options belong to a Layer 2 ACL? ()*
In the case of Huawei routers, what is the "-i" parameter in a Ping command issued on a VRP operating system used to set?
The router ID of the OSPF-enabled router must be the same as the IP address of an interface on the router.
After the two routers are configured with 0SPF, the administrator configures the command on RTA. The following description is correct ()
Which of the following options describes the concept of NFV architecture correct?
An authenticator router has been configured with two domains named "Area1" and "Area2", following which a user is created with the username "huawei" and the password "hello" for authentication. Which domain does this user belong to?
By referring to the network structure and OSPF areas shown in the figure, it can be determined that all routers on the network except RTA are ABRs.
Which of the following packets is used by OSPF to describe its link state database (LSDB)?
Which of the following statements about encapsulation and decapsulation are true?
As shown in the figure below, the network. All switches enable the STP protocol. Disable SWA's G0/0/2 port to configure the BPDU sending function. SWC's G0/0/1 reconverges to become the root port. Which of the following statements is correct about this process? () (Multiple Choice Questions)
Refer to the following configuration of an interface on a switch. What is the PVID of the interface?
interface GigabitEthernet0/0/1
port hybrid tagged vlan 2 to 3 100
port hybrid untagged vlan 4 6
Network Address and Port Translation (NAPT) allows multiple private IP addresses to be mapped to the same public IP address through different port numbers. Which of the following statements about port numbers in NAPT is true?
A company applies for a class C IP address for subnetting. It has six branches and the largest branch should have 26 hosts. What would be an appropriate subnet mask for the largest branch?
Which of the following advantages does the single-arm routing method achieve routing intercommunication between Vlan? ()
NAPT distinguishes the IP addresses of different users through the protocol numbers in TCP, UDP, or IP packets ()
The output information of the link aggregation port of a certain switch is as follows. If you want to delete Eth-Trunk1, which of the following commands is correct? ()
After FIT AP obtains AC.'s IP address, what is the first operation to perform? ()
What kind of packets does the OSPF protocol use to discover and maintain neighbor relationships? ()
The administrator wants to allocate a Hundred P address on the G0/0/0 interface of the router. Which of the following addresses is correct? ()
In the VRP interface, use the command startup saved-configuration backup.cfg. Configure the startup.cfg file to be used at the next startup ()
Which of the following statements about the role of the STP protocol ForwarD.Delay is correct? ()
Using a traditional landline to make a call is a way of network communication. ()
On the VRP operating platform, what command is used to display the current interface configuration in the interface view? ()
The host's IPv4 address is 200.200.200.201/30. Which of the following hosts has an IPv4 address and its communication does not need to be forwarded by a router? ()
VRP operating platform, which of the following commands can only view static routes? ()
In the WLAN network architecture, terminal devices that support the 802.11 standard are called? ()
The router needs to modify the destination IP address in the data packet when forwarding the data packet ()
When planning a campus network, which of the following methods can be used to divide service VLANs? ()
When the host frequently moves, which VLAN division method is most appropriate? ()
Which of the following parameters is not included in the configuration BPDU of the STP protocol? ()
On Huawei ARG3 routers, the -i parameter of the Ping command in VRP is used to set ().
The tracert diagnostic tool in Huawei routers is used to track the data forwarding path. ()
In the wLAN network architecture, terminal devices that support the 802.11 standard are called? ()
Which of the following protocols does the RA. message used by IPv6 stateless autoconfiguration belong to? ()
All four switches run STP, and various parameters adopt default values. If the G0/0/2 port of switch C is blocked and the configuration BPDU cannot be sent through this port, how long will the blocked port in the network enter the forwarding state ()
The transport layer protocol has UDP and TCP, but UDP is more reliable than TCP
The host uses the IP address 192.168.1.2 to access the Internet-it must go through NAT. ()
The broadcast address is a special address that all the host bits in the network address are set to, and it can also be used as a host address. ()
If the broadcast address of a network is 172.16.1.255, then its network address may be ().
The switch is connected to the host. What is the common port link type of the switch? ()
STA. Before associating to AP, it needs to obtain SSID through some message exchange. What are these messages? ()
On the Huawei VRP, what is the default preference of different route types, in descending order?
Which of the following methods is not supported by the Versatile Routing Platform (VRP) to configure a router?
It is advised to assign static IP addresses to servers during campus network planning.
Refer to the following configuration of a switch interface. Which of the following statements is false?
interface GigabitEthernet0/0/1
port link-type trunk
port trunk pvid vlan 200
port trunk allow-pass vlan 100
In RSTP mode, both alternate and backup ports cannot forward user traffic and cannot receive, process, and send BPDU.
Network devices running SNMP can proactively report traps to help network administrators detect faults in a timely manner.
Assuming that OSPF has been enabled on all routers in the following figure, which router is the BDR on this network?
What is the maximum negotiation rate supported by the IEEE802.11g standard? ()
As shown in the figure below, all hosts can communicate normally. Is the correspondence between the MAC address and the port in the MAC address table of SWB correct? () (Single-choice question)
When a company's network management needs to plan the network, the data packets that allow PC1 to access PC2 go through the G0/0/0 port (G0/0/2 on the picture). The data packet that PC2 accesses to PC1 goes from port G0/0/4 (G0/0/0 in the picture). () (Single-choice question)
The Huawei tracert diagnostic attack is used to track the forwarding path of data ()
The MAC address table of existing switches is shown in the figure. Which of the following statements are correct? () (Single-choice question)
Which of the following fields is not included in the HELL0 packet of the OSPF protocol? ()
As shown in the figure below: The wrong statement is: ()acl number 2000 rule 5 deny source 200.0.12.00.0.0.7 rule 10permit source200.0.12.00.0.0.15 interfaceGigabitEthernetO/0/1 traffic-filteroutbounD.ac12000
At what percentage does the DHCP client send the lease renewal message for the first time? ()
As shown in the figure below. Which network device can host A and host B use to achieve communication? () (Single-choice question)
Which of the following IEEE802.11 standards does not support communication in the 5GHz frequency band? ()
Which of the following parameters cannot be used for advanced access control lists? ()
The output information of the router is shown in the figure. Which of the following statements is wrong? () (Single-choice question)
The network shown in the figure below. The router receives a data packet with a destination IP address of 11.0.12.1 from host A. After this data is forwarded by the router, what are the destination MAC and destination IP? )(Single-choice question)
On the Huawei VRP, what is the default preference of different route types, in descending order?
Router A. and Router B are established OSPF neighbor relationship, the OSPF process number of router A. is 1, and the area number is 0. Which of the following configurations on router A can enable router B to obtain the route of the network segment where host A is located? ()
In the network as shown in the figure, the administrator hopes that all hosts cannot access the Web service (the port number is 80). Other services can be accessed normally. Then, in the interface configuration of G0/0/1, traffic-filWhich ACL rule needs to be bound to ter outbound? ()
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? ()*
In an IPv4 network, AP supports static and DHCP methods to obtain IP addresses. ()
The output information of a certain router is shown in the figure. Which of the following statements are correct? () (Multiple Choice Questions)
The output information of the router R1 routing table is shown in the figure. Which of the following statements is correct? () (Multiple Choice Questions)
＜R1＞display ip routing-table
Route Flags: R-relay, D-download to fib
"The network administrator created VLAN 10 on the Layer 3 switch and configured an IP address under the virtual interface of the VLAN. When using the command "display ip interface brief to view the port status, and found that the VLANIF10 interface is in the dow state, what should be done? Operation to restore the VLANIF10 interface to normal? ()
When the router forwards a data packet, if it does not match the corresponding detailed route and there is no default route, it will directly discard the data packet ()
As shown in the figure, two switches use the default parameters to run STP root primary; Switch B uses the configuration command STP priority 0. Then which port will be blocked? () (Single-choice question)
As shown in the figure. If host A has the ARp cache table of host B, then host A can ping host B. ()(True or False)
Management Information Base (MIB) Information Base) is a virtual database, this database only exists on NMS. ()
As shown in the figure, the G0/0/0 and G0/0/1 interfaces of RTA are connected to two different network segments. RTA is the gateway of these two networks. Before host A sends data to host C, will it send an ARP Request to obtain O's MAC address? () (Single-choice question)
As shown in the figure, is the description of this network topology correct? () (Single-choice question)
The configuration information of a certain port of the switch is shown in the figure. Which of the following statements is wrong? () (Single-choice question)
The priority of the LACP protocol is shown in the figure. Switch A and Switch B adopt LACP mode link aggregation, and all interfaces are added to the link aggregation group. At the same time, set the maximum number of active ports to 3. Then which port of switch A is not an active port ? () (Single-choice question)
As shown in the broadcast network. 0SPF runs on four routers. And in the same area. Same network segment. OSPF will automatically elect one DR and multiple BDRs to achieve a better backup effect. ()(True or False)
Telnetlib is a module that implements the Telnet protocol that comes with Python ()
There are multiple route entries to the same destination network in the routing table. These routes are called? ()
As shown in the figure. When the router uses the 0＄PF protocol at the same time. Which BDR is in this network? () (Single-choice question)
The MAC address table of existing switches is shown in the figure. Which of the following statements are correct? () (Single-choice question)
Complete the ACL configuration shown in the figure on the router RTA. Which of the following descriptions is correct? () (Single-choice question)
(RTA) acl 2001
(RTA-acl-basic-2001) rule 20 permit source 20.1.1.0 0.0.0.255
［RTA-acl-basic-2001］rule 10 deny source 20.1.1.0 0.0.0.255
By default, it takes at least 30s for the port status in the STP protocol to change from Disable D. to Forwarding status. ()
When using the ping command on the VRp platform, if you need to specify an IP address as the source address of the echo request message, which of the following parameters should be used? ()
On Huawei devices, if you use aaA authentication to authorize. When the remote server does not respond, you can authorize from the network device side ()
The administrator has configured the router as shown in the figure. Then a host connected to the G1/0/0 interface of the router. What kind of IP address can be obtained through DHCP? () (Single-choice question)
In the network shown in the figure below, the host has an ARP cache, and host A sends a packet to host B. What are the destination MAC and destination IP of this packet? () (Single-choice question)
Which of the following IEEE802.11 standards only supports the 2.4GHz frequency band for communication? ()
Which stage in the life cycle of campus network construction is the beginning of a project? ()
The MAC address table of a certain switch is shown in the figure. If the switch receives a data frame with a destination MAC of 5489-9811-0b49 from port Eth0/0/2, which of the following statements is correct? ()
In the network shown in the figure below, when the 0$PF neighbor status is stable. What is the neighbor status of Router B and Router C?
In the OSPF protocol, which of the following descriptions of DR is correct? ()
Which of the following commands configures the authentication mode as HWTACACS authentication? ()
The number of VLANs that can be created using the commands "vlan batch1020 and "vlan batch10to20" respectively is ()
What is the corresponding Solicited.-node multicast address for IPv6 iAilt2019::8:AB.? ()
When the router is powered on, it will read the configuration file from the default storage path to initialize the router. If there is no configuration file in the default storage path, what will the router use for initialization? ()
In the network shown in the figure below, switch A and router A are connected by two links, and the two links are aggregated in manual load sharing mode. The aggregated port number is 1, and the aggregated link performs data forwarding It needs to carry VLAN TAG100, and switch A uses trunk link. Which of the following configurations should be used for switch A? ()
Which of the following methods can read data non-blocking in Python's telnetliB.? ()
ifoneLength/Type = 0X8100 taught by the Ethernet data, which of the following is correct? ()
As shown in the picture. About OSPF topology and configuration. Which of the following statements is correct? () (Single-choice question)
The Layer 2 Ethernet switch generates entries in the MAC address table according to the () of the Ethernet frame received by the port. ()
What is wrong about the description of the information as shown in the figure? () (Single-choice question)
(RI) display interface g0/0/0
GlgabltEtherneto/0/0 current state :Adainistratively DOWN Line protocol current state :DOWN
The election of the root switch in STP only compares the priority of the switch, while in RSTP, the priority of the switch is compared with the MAC address at the same time. ()
After the administrator successfully logged in to the router through Te1net, he found that the router’s interface could not be configuredIP address. Then the possible reasons are ()
All interfaces of routers running 0SPF protocol must belong to the same area. ()
On Huawei equipment, if AAA authentication is used for authorization, when the remote server does not respond, authorization can be performed from the network equipment side ()
On an interface that uses PPP as the data link layer protocol, you can configure a static route by specifying the next hop address or outgoing interface. ()
When learning this switch needs to forward the frame with the destination MAC. The address is 5489-98ec-f011, the following description is correct ()
The IPv4 address assigned by the network administrator to a host in the network is 192.168.128, how many more hosts can be added to the network where this host is located? ()
AP does not need AC. It can independently complete the work of wireless user access, wireless user authentication, and business data forwarding.
Which of the following messages does the AP use to request the software version from AC.? ()
The administrator plans to implement route backup by configuring static floating routes. The correct way to achieve this is ()
Which bridge is in the configuration BPDU sent by the switchID. Impossible to appear?
The administrator wants to configure the P address on the G0/0/0 interface of the router. Which of the following addresses is correct?
STA. The only way to discover the wireless network is the Beacom frame sent by the AP. ()
What is RouterDeadInterval of the OSPF protocol on the broadcast network by default? ()
When a switch receives a unicast data frame with a VLAN tag, but finds that the destination MAC address of the data frame cannot be queried in its MAC address table, the switch's processing behavior for the data frame is ().
A device has been configured to complete Telnet configuration. The device login address is 10.1.1.10. The Telnet user name is admin and the password is Huawei (@123. The following is the correct way to log in to this device using telnetliB. ()
The IP addresses of the VLANIF interfaces of the same switch cannot be the same. ()
The network administrator of a certain company wants to uniformly divide the users who often access the company network from different switches to VLAN 10 when they frequently change office locations. Which of the following methods should be used to divide VLANs? ()
Which of the following commands can be used to check the session status of the PPPoE client? ()
The FIT AP can obtain the IP address of AC. through the DHCP Option to establish a CAPWAP tunnel. Which Option needs to be configured on the DHCP server for this? ()
Which of the following parameters is used in LCP negotiation to detect link loops and other abnormal conditions? ()
The display startup information of the AR2200 router. Regarding these information, the statement is wrong ()
Which parameter is used in the spanning tree protocol for root bridge election? ()
In the network shown in the figure below, what commands can be entered on the router to make host A ping host B through? ()
If during the PPP authentication process, the authenticatee sends the wrong user name and password to the authenticator, what type of message will the authenticator send to the authenticatee? ()
The bridge ID of the STP protocol in the switching network is as follows. Which of the following bridge IDs will be the root bridge? ()
TESTED 21 Nov 2024
