According to OSI reference model, which layer is responsible for end-to-end error checking and flow control?
An AR2200 router needs to restore the initial configuration, which of the following operations are necessary? ()*
Which of the following statements about the default route are correct? ()
When an AP and an AC are located on different Layer 3 networks, which of the following methods is recommended for the AP when discovering the AC?
From a security perspective, router A refuses to receive OSPF packets. ICMP packets received from the cO/0/1 interface. Which of the following commands can achieve this requirement? ()
For STP, the Message Age in the configuration BPDUs sent by the root bridge is 0.
When both ends running PPP protocol detect that the physical link is active, the link state will transit from dead to establish. Which of the following protocols is used to negotiate the link parameters during this phase?
SNMP packets are transmitted by UDP.
Which of the following BIDs cannot be contained in a configuration BPDU sent by a switch?
Virtualization is the basis for implementing NEV. Which of the following statements about the characteristics of virtualization is correct? ()*
Which of the following network types are supported by OSPF?
The priority of static routes cannot be manually specified.
The network is shown in the figure below. The following statementcorrectIs there? () (Multiple Choice Questions)
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?
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? ()*
Which of the following port numbers is used by the FTP control plane?
On the VRP, when the mkdir test command is run, the system creates a directory named test.
SDN requires the control and forwarding planes to be separated.
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? ()*
As shown in the figure, the host has ARP cache. Host A sends a data packet to host B. Which of the following are the destination MAC address and destination IP address of the data packet?
Which of the following features does the default VLAN in the Layer 2 Ethernet switch have? ()*
After OSPF is configured on the two routers, the administrator configures commands on RTA. Which of the following descriptions is correct? ()
As shown in the figure below. Router A has passed the IP address 10.0.12.2 Telnet Router B. Which of the following operations on the current interface will cause the Telnet session between Router A and Router B to be interrupted? () (Multiple Choice Questions)
The network is shown in the figure below. Switch configuration information is shown in the figure. Which of the following statements is correct? () (Multiple Choice Questions)
VLANs can be assigned based on service types during campus network planning.
Which of the following fields are present in both IPv6 and IPv4 packet headers? ()*
On the network shown in the figure, router A adopts link aggregation in manual load balancing mode, and G0/0/1 and G0/0/2 are added to link aggregation group (LAG) 1. Which of the following statements is false about Eth-Trunk 1 on router A?
Link aggregation is a common technology in enterprise networks. Which of the following descriptions are the advantages of link aggregation technology? ()*
What is the total length of the interface ID in each link-local unicast address?
When configuring the PPP authentication mode as PAP, which of the following operations are necessary? ()*
What is the default lease time of the IP address allocated by the DHCP server?
A routing entry contains multiple fields. Which of the following statements about these fields is false?
If the broadcast address of a network is 172.16.1.255, which of the following addresses is the network address?
Which of the following descriptions about the 0SPF area is correct ()*
Which SNMP version focuses on two main aspects, namely security and administration? The security aspect is addressed by offering both strong authentication and data encryption for privacy. The administration aspect is focused on two parts, namely notification originators and proxy forwarders.
How to add AP on AC.? ()*
The administrator cannot log in to the Huawei router through Telnet, but other administrators can log in normally. What are the possible reasons for the following items? ()
Which of the following parameters need to be considered when electing a root port in STP? ()*
What command line views exist on the VRP operating platform? ()*
What are the functions of OSPF protocol DR and BDR?
On Huawei AR G3 Series routers, which authentication modes does AAA support?
Which of the following methods is not used for logging in to the VRP system?
Which of the following message types does DHCP contain?
Fit APs can provide wireless services independently of an AC.
Which of the following statements about IPv6 RA. and RS messages are correct? ()
Which of the following methods can be used to add APs on an AC?
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? ()*
Which of the following statements about the default route are correct?
Which of the following options describes the concept of the IEV architecture correct? ()*
If AAA authentication is used on Huawei devices and the remote server does not respond, the authentication can be performed on network devices.
Which of the following protocols can be used to prevent Layer 2 loops on a campus network?
OSPF protocol needs to elect DR and BDR in which of the following network types? ()*
In STP, the bridge ID on the switching network is as follows. With which of the following bridge IDs is the switch selected as the root bridge?
When Fit APs go online on an AC, they will necessarily download the system software package from the AC.
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 of the following commands sets the data forwarding mode on an AC to direct forwarding?
The output information of the routing table of a certain router 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
Which of the following MAC addresses cannot be used as the MAC address of the host network card? ()*
The Layer 2 networking of WLAN refers to STA. It uses AC as its own gateway. ()
What is the number range of advanced ACLs? ()
What is the port number used by the FTP protocol control plane? ()
The static MAC. address table will not be lost after the system restarts ()
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? ()
In order to realize the launch of FIT AP, FIT AP first needs to obtain the IP address of AC. Which of the following is not included in the way FITAP obtains the IP address of AC.? ()
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. ()
When adopting LACP mode for link aggregation, what is the default system interference level of Huawei switches? ()
By default, on the broadcast networkOSPFWhat is the transmission period of the protocol HELLO message? ()
After the network administrator uses the Tracer tRoute function on the router device, in the data packet sent by the router, the value of the Protoco1 field in the IPv4 header is?
For multiple paths to the same destination network, the router needs to select by comparing the magnitude of the Prererence value. If the Preference is the same, the router selects according to the magnitude of the Cost value. ()
Only the WPA2-PSK security policy supports the use of TKIP for data encryption. ()
In the network shown in the figure below, what commands can be entered on the router to make host A ping host B through? ()
What kind of packets does the OSPF protocol use to describe its LSDB? ()
Which of the following interfaces are not open to Huawei controllers?
Which of the following IPv6 addresses is a multicast address? ()
By default, what is the RouterDeadInterval of the ospf protocol on the broadcast network? ()
Does the WEP security policy support the use of TKIP for data encryption?
After link authentication is completed, STA. will continue to initiate link service negotiation. Which of the following messages will be used to achieve the specific negotiation? ()
The DHCPv6 server supports the provision of other configuration information such as DNS server addresses for the host. ()
The display startup information of the AR2200 router. Regarding these information, the statement is wrong ()
Which of the following fields is not included in the HELL0 packet of the OSPF protocol?
When using the ping command on the VRp platform, if you need to specify a P address as the source address of the echo request message, which of the following parameters should be used? ()
As shown in the figure, two hosts realize communication between TAs through single-arm routing. When the G0/0/1.2 sub-interface of RTA. receives the data frame sent by host B. to host A., RTA. will execute which of the following Operation? ()
When two OSPF routers form a 2-WAY neighbor relationship, the LSDB. has been synchronized. ()
On the VRP platform, the default protocol priority of routes in the direct route, static route, RIP.OSPF area, from high to low, is ()
The administrator plans to implement route backup by configuring static floating routes, the correct way to achieve this is ().
When using the SNMPv1 protocol to manage network devices, which of the following commands is used by the network management system to complete the configuration of the network devices? ()
According to the command shown in the figure, which of the following descriptions is correct? () (Multiple Choice Questions)
In order for the STA to obtain the SSID related information on the AP, which of the following messages is used by the AP to proactively declare the wireless network SSID information?
If the Proto of a certain route information in the routing table is Direct, the priority of this route must be0.()
In standard STP mode, which of the following non-root switches will forward the C-set BPDU generated by the root switch? ()
The login timeout time in the VRP system can only be set under the vty interface. ()
What is the total length of port ID in Spanning Tree Protocol? ()
When AP and MC are in different Layer 3 networks, what method is recommended for AP to discover AC?
There is a WeB server in the private network that needs to provide HITP services to public network users. Therefore, the network administrator needs to configure NAT on the gateway router RTA.
If the Length/Type of an Ethernet data frame is 0x8100. Which of the following statements is correct?
VLAN4095 cannot be created on Huawei switches, and VLAN1 cannot be deleted. ()
Which of the following descriptions of wireless devices is correct? ()
All interfaces of routers running 0SPF protocol must belong to the same area. ()
The Priority field in the VLAN tag can identify the priority of the data frame. What is the scope of this priority? ()
By default, in the SNMP protocol, which port number does the agent process use to send alarm messages to N? ()
Which of the following commands can be used to view the CPU usage of the router? ()
The basic header length of IPv6 packets is a fixed value ()
Which of the following descriptions about the switch is wrong? ()
Which of the following statements is correct? ()
It is known that there are two entries in the routing table of a router. If the router wants to forward packets with the destination address of 9.1.4.5, the correct one of the following statements is ()
UDP is oriented to connectionless and must rely on () to ensure the reliability of transmission. ()
When the FIT AP goes online, the software version will be downloaded from AC.
To ensure that the same data stream is forwarded on the same physical link, which load sharing method does Eth Trunk use?
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. ()
What is RouterDeadInterval of the OSPF protocol on the broadcast network by default? ()
OSPF Router ID. It must be the same as the IP address of an interface on the router.
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? ()
At which layer of the OSI reference model do Ethernet switches operate? ( )
The following figure shows the routing table of a router. When the router receives a data packet with a destination IP address of 9.LL, the router will forward it according to the route of 91.0.016 because the mask length of this route is longer. ()
Which of the following routing protocols has the highest priority?
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 rules in an ACL may overlap. If packets match the rules with loose conditions, the later ACL rules are not processed. In this case, packets cannot match the rules with strict conditions. Therefore, the rules with strict conditions must be arranged in front lines and those with loose conditions must be arranged towards the end.
When a host uses the stateless address autoconfiguration solution to obtain an IPv6 address, the host cannot obtain the DNS server address.
What function does Ctrl+Z have in the VRP system?
After an Eth-Trunk in LACP mode is created, devices on both ends send LACPDUs to elect the Actor. Which of the following parameters in LACPDUs determine the Actor election?
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
On the network shown in the figure, host A logs in to router A through Telnet and obtains the configuration file of router B through FTP on the remote CLI. How many TCP connections exist on router A?
On an STP-enabled switch, a port in the Learning state can transition to the Forwarding state only after the Forward Delay timer expires.
Which of the following VRP commands can be used to enter area 0 view?
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 packets are exchanged between STAs and an AP to obtain the AP's SSID before association with the AP?
What is used as the data link-layer MAC address that identifies each VAP on an AP?
Which of the following statements is true about link aggregation in manual load balancing mode?
If the transport-layer protocol is UDP, the value of the "Protocol" field at the network layer is 6.
Which of the following WLAN security policies support open link authentication?
Which of the following statements about the network shown in the figure is true?
The IP address 192.168.1.127/25 represents a ( ) address.
Refer to the graphic, 00e0-fc99-9999 is a specific host MAC address learned by a switch through ARP, and the host changes the IP address three times.
telnetlib is a module provided by Python to implement the Telnet protocol.
As shown in the figure, if host A has the ARP cache of host B, host A can ping host B.
Which of the following are valid static route configurations?
Which of the following statements about the routing table shown in the figure are true?
If a device running STP receives an RSTP configuration BPDU, it discards the BPDU.
TION NO: 29
For an Eth-Trunk in LACP mode, what is the default LACP system priority of a Huawei switch?
Which of the following statements about switches is false?
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 network parameters can be allocated using DHCP?
If Proto of a route displayed in the routing table is OSPF, the preference of the route must be 10.
Which of the following statements is true about the Forward Delay timer of STP?
Which of the following sources of routes can be obtained by a router?
Which statement is true regarding the following command?
ip route-static 10.0.12.0 255.255.255.0 192.168.1.1
As shown in the figure, which of the following ports will be in blocking state?
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 the default port number of the Telnet server?
A router in the backbone area has complete LSDBs of routers in other areas.
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?
On the Huawei VRP, what is the default preference of different route types, in descending order?
Network devices running SNMP can proactively report traps to help network administrators detect faults in a timely manner.
For the Versatile Routing Platform (VRP), the login timeout period can be set only on a VTY interface.
Which of the following are true about the Ethernet data frame with the "Length/Type" field being 0x0806?
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
What is the number range of an advanced ACL?
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.
What is the length range of an Ethernet_II frame that contains an Ethernet header?
What is the main function of the DNS protocol?
After the administrator performs the configuration shown in the figure on a router, which of the following commands can be used to specify a short lease for addresses assigned using DHCP?
In RSTP, an edge port becomes a common STP port after receiving a configuration BPDU.
The TCP protocol uses the three-way handshake mechanism to establish and disable connections. Therefore, TCP supports reliable data transmission.
Which of the following parameters is used to elect the root bridge in STP?
Which of the following statements regarding static routing and dynamic routing is incorrect?
Which of the following fields are included in an MPLS header?
Which of the following advantages is/are provided by inter-VLAN routing in one-arm routing mode?
Which of the following operations are mandatory to restore the factory default settings of an AR2200 router?
Which of the following states indicates that the OSPF neighbor relationship has been established?
In RSTP mode, both alternate and backup ports cannot forward user traffic and cannot receive, process, and send BPDU.
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?
As shown in the figure, all switches run STP. Assume that the path cost of all ports is 200. What is the root path cost contained in the configuration BPDU received by G0/0/4 on SWD?
Which of the following methods is not supported by the Versatile Routing Platform (VRP) to configure a router?
Which SNMP version focuses on two main aspects, namely security and administration. The security aspect is addressed by offering both strong authentication and data encryption for privacy. The administration aspect is focused on two parts, namely notification originators and proxy forwarders.
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? ()
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)
Which of the following are related to the purpose of encapsulation and decapsulation? ()
As shown in the figure below. Host A and Host B cannot communicate. ()(True or False)
The MAC address table of existing switches is shown in the figure. Which of the following statements are correct? () (Single-choice question)
Telnetlib is a module that implements the Telnet protocol that comes with Python ()
Which of the following commands can change the device name to huawei? ()
In the history of WLAN development, which of the following is not included in the main wireless protocol standards in the primary mobile office era? ()
As shown in the figure below. Which port of the following switches will be blocked? () (Single-choice question)
FIT AP can work independently without relying on AC. ()
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)
"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? ()
As shown in the figure below, in the MAC address table of the network. SWA and SWB, which of the MAC addresses, VLANs, and ports are correct? () (Single-choice question)
As shown in the following figure, in the switching network, all switches are running the stp protocol. When the topology is stable, which of the following switches can be used to modify the BPDU sending cycle. Can it affect the SWD configuration BPDU sending cycle? () (Single-choice question)
The network shown in the figure below. All links are Ethernet links, and all interfaces of all routers run OSPF protocol, how many DRs are elected in the entire network? () (Single-choice question)
If the MAC address of an interface is 0OEO-FCEF-OFEC, what is its corresponding EUI-64 address? ()
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 an IPv4 network, AP supports static and DHCP methods to obtain IP addresses. ()
The network shown in the figure below. All routers run OSPF. The link cost value is shown in the figure. What is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing table? () (Single-choice question)
The network shown in the figure below. Two switches are connected by four links. COPPER refers to electrical interface and FIBER refers to optical interface. Then which two interfaces can realize link aggregation? () (Single-choice question)
The network shown in the figure below. The network where host A is required to access the Internet through Easy IP, then which of the following ACLs should be used on the G0/0/3 interface of router A? () (Single-choice question)
As shown in the figure, it can be judged that 00e0-fc99-9999 is the specific host and MAC address learned by the switch through ARP. And the host has changed its IP address three times? () (Single-choice question)
10.137.217.21000e0-fc01-0203E1/0/0
10.2.2.100e0-fc99-9999Eth-Trunk 1
192.168.20.100e0-fc99-9999vlan100
10.0.0.100e0-fc99-9999vlan200
As shown in the figure below, host A and host B cannot communicate ()
Which of the following statements are correct for the MAC address of the existing switch? ()
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)
The Hybri D port can be connected to the user host or other switches. ()
Which field of the Pv6 packet header can be used for Q0s? ()
In the OSPF protocol, which of the following descriptions of DR is correct? ()
As shown in the figure, the network administrator creates VLAN2 on SWA and SWB. The ports connecting the hosts on the two switches are configured as Access ports. They are assigned to VLAN2. G0/0/1 of SWA and G0/0/2 of SWB are configured as Trunki ports. All VLANs are allowed to pass. What is needed to achieve normal communication between two hosts? () (Single-choice question)
By default, it takes at least 30s for the port status in the STP protocol to change from Disable D. to Forwarding status. ()
As shown in the figure, a static NAT command is deployed on router R1. When the PC accesses the Internet, the destination address in the data packet will not change. ()(True or False)
By default, network devices running the SNMPv2C. protocol use which of the following port numbers to send trap messages to the network management system? ()
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)
AAA. Which of the following is not included? ()
If the configured ACL rules have an inclusive relationship, it should be noted that the rule numbers of strict conditions need to be sorted first, and the rule numbers of loose conditions need to be sorted later to prevent packets from hitting the rules of loose conditions and stop being pushed down to continue matching. Cannot hit the strict conditions of the rules. ()
The configuration of the country code will affect the frequency used for actual transmission and the maximum transmission power. ()
Which of the following IEEE802.11 standards does not support communication in the 5GHz frequency band? ()
In the VRP interface, use the command startup saved-confi guration backup.cfg. Configure the backup.cfg file to be used at the next startup. ()
On an interface that uses PPP as the data link layer protocol, can you configure a static route by specifying the next hop address or outbound interface? ()
Which of the following are not the characteristics of a small campus network? ()
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)
AC. Use CAPWAP control tunnel to transmit management messages to FIT AP. ()
The IPv6 protocol uses NS and NA. packets for duplicate address detection ()
The vty distribution responsibility is shown in the figure, and the user authority level is set to level 3. ()
［Huavei］user-interface vty o 14 Huavei-ul-vtyo-14acl 200o inbound Huavei-ui-vtyo-14Juser privilegelevel 3 ［Huavei-ui-vtyo-14］authentication-node passworD.Please Configure the login passvord (maxiu length 16): huavei
Among the configuration BPDUs sent by the switch, which bridge D. is unlikely to appear? ()
To ensure that the same data flow is forwarded on the same physical link, which load sharing method does the Eth-Trunk adopt? ()
The information shown in the figure is the port status information displayed on a switch running STP. According to this information, what is wrong in the following description? () (Single-choice question)
The administrator has configured the router as shown in the figure. At the same time, the administrator wants to assign a shorter lease period to the DHCP address. Which of the following commands should be used? () (Single-choice question)
Which of the following IEEE802.11 standards does not support the 5GHz frequency band for communication? ()
Which of the following statements about the usage scenarios of the DHCP protocol is correct? ()
All ports on the root bridge exchange machine are designated ends ()
The two switches shown in the figure below have both enabled the STP protocol. Which port will eventually be in the Blocking state? ()
The protocol uses the P/A. mechanism to speed up the upstream port's transition to the Forwarding state, but what is the reason for no temporary loop? ()
If a windows host is started for the first time, if it uses DHCP to obtain an IP address, what is the source IP address of the first packet sent by this host? ()
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)
Which category does the IPv6 address FE80:2E0:FCFF:FE6F:4F36 belong to? ()
Three Layer 2 switches are interconnected with one HUB. The switches are all enabled with STP bridge ID. Refer to the figure below. What are the default errors of other configurations? () (Single-choice question)
Which of the following authentication methods does not require the user name and password? ()
The WPLS tag header is encapsulated between the data link layer header and the network layer header of the message.
Which of the following fields is not included in the He1lo packet of the OSPF protocol? ()
Which of the following does not include the advantages of Wi-Fi6 compared to Wi-Fi5? ()
FTP transfer data at a time requires several TCP connections to be established
The management of users by NAS devices is based on domains. Each user belongs to a domain, and a domain is a group composed of users belonging to the same domain. ()
The subnet mask of a network segment 150.25.0.0 is 255.255.224.0, then () is a valid host address in this network segment. ()
On Huawei switches, you can use the vlan batch command to create multiple VLANs in batches, simplifying the configuration process. ()
After FIT AP obtains AC.'s IP address, what is the first operation to perform? ()
When the lease period reaches what percentage does the DHCP client send the lease renewal message for the first time? ()
Which of the following commands to configure the default route is correct? ()
What is correct about the SNMP protocol? ()
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. ()
Neither the A1 ternate interface nor the Backup port in RSTP can forward user traffic, nor can they receive, process, and forward BPDUs ()
The link aggregation interface can only be used as a Layer 2 interface ()
Which of the following statements is correct for the ACL configured in the Telnet application? ()
Which of the following IPv6 is a global unicast address ()
If the network address of a network is 192.168.1.0, then its broadcast address must be 192.168.1.255. ()
Since the TCP protocol uses a three-way handshake mechanism when establishing a connection and closing a connection, TCP supports reliable transmission.
VRP operating system commands are divided into four levels: access level, monitoring level, configuration level, and management level. Which level can run various business configurations and set commands but cannot operate the file system?
The second layer switch belongs to the data link layer device, which can identify the MAC address information in the data frame, forward data according to the MAC address, and record these MAC addresses and corresponding port information in its own MAC address table. ()
Which layer of protocol does ARP belong to
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? ()
The router needs to modify the destination IP address in the data packet when forwarding the data packet ()
When using FTP for file transfer, how many TCP connections will be established? ()
When deploying ACL on Huawei equipment, which of the following descriptions is correct is ()
After the network administrator uses the TracertRoute function on the router device, in the data packet sent by the router, the value of the Protoco1 field in the IPv4 header is? ()
By default, the port cost calculated by STP has a certain relationship with the port bandwidth, that is, the larger the bandwidth, the higher the cost ()
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
When the Access type port sends a message, it will ().
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 ().
During data access, when accessing different network segments, the destination MAC. Encapsulate the MAC address of the gateway on the source host
NAPT distinguishes the IP addresses of different users through the protocol numbers in TCP, UDP, or IP packets ()
FIT AP can work independently without relying on AC. ()
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? ()
Which of the following are not the characteristics of a small campus network? ()
The switch receives a unicast data frame. If the destination MAC of the data frame can be found in the MAC table, the data frame will be forwarded from the corresponding port of this MAC. ()
About the above configuration command is correct ()
PPPoE sessions can only use CHAP authentication ()
In what state does the OSPF protocol determine the master-slave relationship of DD. packets? ()
When building a campus network, which of the following protocols can be used to avoid Layer 2 loops? ()
On the VRP platform, which of the following methods can be used to access previous historical commands? ()
Telnet.read in TelnetliB._The role of all() is to read all data until EOF. If the echo does not return EOF, it will always block ()
On the VRP operating platform, what command is used to display the current interface configuration in the interface view? ()
In which working state of the port in the STP protocol can it be changed to the Forwarding state without going through other states? ()
The host uses the IP address 192.168.1.2 to access the Internet-it must go through NAT. ()
By default, what is the ForwarD.Delay time of the STP protocol in seconds? ()
In the network shown in the figure below, the bridge ID of the switch has been marked. Enter the command stp rootsecondary on the sWD. switch and the following switch will become the root bridge of this network. ()
When accessing across network segments, the source and destination IP will change, and the source and destination MAC will not change
Which of the following IPv4 addresses can be used by a host to directly access the Internet? ()
Which of the following fields is not included in the HELL0 packet of the OSPF protocol? ().
OSThe I reference model from high-level to bottom-level is ()
DHCP is an application layer protocol. In order to make it more reliable when assigning P, its transport layer uses TCP protocol.
IPCP dynamic address negotiation can automatically obtain the address()
The role of the OSPF protocol is
What elements can NAPT transform? ()
What is the value of TPID. defined by IEEE802.1Q? ()
The network structure and 0$PF partition are shown in the figure. In the figure, except for RTA., the routers RTB.RTC. and RTD. are ABR routers. ()
(RTA) ip route-statiC.10.1.1.02412.1.1.1 permanent
(RTA) ip route-statiC.10.2.2.02413.1.1.1.
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