H12-811_V1.0 HCIA-Datacom V1.0 Exam Question and Answers

After a switch restarts, static MAC address entries saved on the switch remain in the MAC address table.

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?

How many bytes are there in a basic IPv6 header?

What is the main function of the DNS protocol?

Which of the following methods is not supported by the Versatile Routing Platform (VRP) to configure a router?

What function does Ctrl+Z have in the VRP system?

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.

As shown in the figure, if host A has the ARP cache of host B, host A can ping host B.

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 information prompts is used by the VRP operating platform for incomplete input commands? ()

The election of the root switch in STP only compares the priority of the switch, while in RSTP, the priority of the switch and the MAC address are compared at the same time. ()

RADIUS is a common protocol to implement AAA. ()

VRP operating system commands are divided into four levels: access level, monitoring level, configuration level, and management level. Which level can run various business configuration commands but cannot operate the file system? ()

The transport layer protocol has UDP and TCP, but UDP is more reliable than TCP

The Backup port in RSIP can replace the failed root port. ()

O: 25

In RSTP, a backup port can replace a faulty root port.

Which of the following is the default port number of the Telnet server?

When a host uses the stateless address autoconfiguration solution to obtain an IPv6 address, the host cannot obtain the DNS server address.

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

A router in the backbone area has complete LSDBs of routers in other areas.

Which of the following sources of routes can be obtained by a router?

Which of the following IEEE 802.11 standards supports a theoretical negotiated rate of 5 Gbit/s or higher?

If a device running STP receives an RSTP configuration BPDU, it discards the BPDU.

What is used as the data link-layer MAC address that identifies each VAP on an AP?

With SNMP, an NMS can only display the device running status but cannot deliver configurations.

Which of the following fields are contained in an ARP packet?

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?

Which statement is true regarding the following command?

ip route-static 10.0.12.0 255.255.255.0 192.168.1.1

The network administrator performs the configuration shown in the following figure on RTA. If a user needs to be authenticated in the authentication domain named huawei, which of the following statements is true?

Which of the following statements about the routing table shown in the figure are true?

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 of the following parameters is used to elect the root bridge in STP?

When two switches are connected through link aggregation, what are the requirements for the interfaces on the two switches?

A Layer 2 ACL can match information such as the source MAC address, destination MAC address, source IP address, and destination IP address.

telnetlib is a module provided by Python to implement the Telnet protocol.

Which of the following is the default value of the Router Dead Interval field in OSPF Hello packets on a broadcast network?

Which of the following statements about the network shown in the figure is true?

For the Versatile Routing Platform (VRP), the login timeout period can be set only on a VTY interface.

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?

In RSTP mode, both alternate and backup ports cannot forward user traffic and cannot receive, process, and send BPDU.

Which of the following statements regarding static routing and dynamic routing is incorrect?

An ACL is essentially a packet filter. An ACL takes effect only after it is applied to a service module.

What is the number range of an advanced ACL?

On a Layer 2 WLAN, STAs use an AC as their gateway.

The data link layer uses PPP encapsulation. The IP addresses of the two ends of the link can be in different network segments.

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

Which of the following states indicates that the OSPF neighbor relationship has been established?

Which of the following network parameters can be allocated using DHCP?

If the transport-layer protocol is UDP, the value of the "Protocol" field at the network layer is 6.

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?

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.

Which of the following is correct regarding the configuration of the trunk port and access port on a switch?

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.

As shown in the figure, RTA uses NAT and has an address pool configured to implement many-to-many non-NAPT address translation, so that hosts on the private network can access the public network. Assume that the address pool has only two public IP addresses, which are translated for Host A and Host B. If Host C wants to access the public network, which of the following statements is true?

Which of the following are features of the OSPF protocol?

If the IPv4 address of a host on a LAN is 192.168.1.1/30, the host will process IP packets with specific destination IP addresses. Which of the following IP addresses may be the destination IP addresses?

As shown in the figure, which of the following ports will be in blocking state?

Which of the following is not a characteristic of small campus networks?

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.

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?

If Spanning Tree Protocol (STP) is disabled on the network consisting of switches, a Layer 2 loop will definitely occur.

IPCP dynamic address negotiation can automatically obtain the address()

After FIT AP obtains AC.'s IP address, what is the first operation to perform? ()

Which of the following statements is true about link aggregation in manual load balancing mode?

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 ()

Which of the following statements about Prefix Segment is wrong? ()

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. ()

VLAN4095 cannot be created on Huawei switches, and VLAN1 cannot be created ()

Which information of the data frame is used by the VLANIF interface to determine whether to perform Layer 2 or Layer 3 forwarding? ()

UDP has a sliding window mechanism to control the speed of data transmission

What are the characteristics of VLAN based on ports? ()

When using the FTP protocol to upgrade the router software, the transmission mode should be selected ()

The following statement about the TTL field in the IP packet header is correct. ()

On the VRP platform, which of the following methods can be used to access previous historical commands? ()

How many types of data flows with different service levels can be marked based on MPLS labels? ()

When the switch port receives a data frame that does not carry VLAN TAG, it must add PVID. ()

Use the command kdir test in the VRP operating platform. The system will create a directory named test.

What kind of message does the DHCP server use to confirm that the host can use the IP address? ()

When deploying ACL on Huawei equipment, which of the following descriptions is correct is ().*

Is there any correct statement about the shortcut keys of the VRP operating platform? ()*

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?

In the STP protocol, which of the following factors will affect the election of the root switch? ()*

Network administrators use Ping to test the connectivity of the network. Which of the following protocols may be used in this process? ()

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 port states is not included in the RSTP protocol? ()

In order to join the wireless network $TA. The wireless network information needs to be obtained first. Which of the following messages is used by the STA to actively obtain the SSID information? ()

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

Which of the following features does the OSPF protocol have? ()*

Which of the following parameters need to be considered when electing a root port in STP? ()*

In order to realize the network layer function on the VLANIF interface, do you need to configure it on the VLANIF interface? ()

The network shown in the figure below. From a security perspective, router A refuses to receive OSPF packets and ICMP packets received from interface G0/0/1. Which of the following commands can achieve this requirement? () (Multiple Choice Questions)

With what kind of routers does a DRother router exchange link state information and route information?

For STP, the Message Age in the configuration BPDUs sent by the root bridge is 0.

The load balancing modes at both ends of an Eth-Trunk can be different.

After a fault occurs in the network, the administrator finds that the configuration of a certain router has been modified through troubleshooting. What measures should the administrator take to avoid this situation from happening again? ()*

Refer to the graphic, which of the following statements is true about OSPF topology and configuration?

How to add AP on AC.? ()*

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?

When configuring the PPP authentication mode as PAP, which of the following operations are necessary? ()*

DHCP is an application layer protocol. In order to make it more reliable when assigning P, its transport layer uses TCP protocol.

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. ()

The HybriD. port can be connected to the user host or other switches. ()

When planning a campus network, which of the following methods can be used to divide service VLANs? ()

What is the protocol number corresponding to the ospf protocol at the network layer? ()

The router running the OSPF protocol reaches the FULL state first, and then synchronizes the LSDB. ()

CSS refers to the combination of two switch devices that support cluster features. Logically combined into one switch device. ()

Which of the following IPv6 is a global unicast address ()

The Backup port in RSTP can replace the failed root port ()

1/128 is the IPv6 loopback address ()

The last option field (option) of 1Pv4 is variable-length optional information. What is the maximum length of this field? ()

If the network address of a network is 192.168.1.0, then its broadcast address must be 192.168.1.255. ()

When accessing across network segments, the source and destination IP will change, and the source and destination MAC will not change

The following statement about Python is incorrect ()

How many more bytes are the packets using MPLS label double-layer nesting technology than the original IP packets ()

Which of the following packet types is used by RADIUS to indicate authentication rejection? ()

Which of the following fields is not included in the HELL0 packet of the OSPF protocol? ().

The administrator hopes that RTA. uses static routing and preferentially sends data packets to RTB's Loopback0 interface through G0/0/1 port, while G0/0/2 is used as a backup. How to configure on RTA to achieve this requirement ()

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? ()

When using FTP for file transfer, how many TCP connections will be established? ()

Which of the following authentication methods does not require the user name and password? ()

The router forwards data according to the IP routing table, and the Layer 2 switch forwards data according to the MAC. address table

In the wLAN network architecture, terminal devices that support the 802.11 standard are called? ()

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? ()

In VRPOn the platform, the command"interfacevlanit＜vlan-id＞"The role is (). ()

Which of the following are not the characteristics of a small campus network? ()

On the broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages ()

For switches running the STP protocol, the port needs to wait for the forwarding delay in the Learning state to transform into the Forwarding state. ()

An existing switch is connected to a designated port through a port, but the port does not forward any packets, but can monitor network changes by receiving BPDUs, then the role of the port should be ().

The correct setting of the terminal emulation program when configuring the router through the Console ()

Which of the following statements about the edge port in the RSTP protocol is correct? ()

ARP request is sent by ()

By default, what is the ForwarD.Delay time of the STP protocol in seconds? ()

DNS is used for domain name resolution

What is the function of the command port trunk allow pass vlan all? ()

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. ()

Regarding the configuration shown in the figure, which statement is correct? () (Single-choice question)

AAA. Which of the following is not included? ()

The administrator made the configuration on 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)

ip pool pooll

netyork10.10.10.0ask255.255.255.0

gateway-list 10.10.10.1

Telnet is a module that implements the Telnet protocol that comes with Python ()

Which stage in the life cycle of campus network construction is the beginning of a project? ()

Which of the following SNMP packets are sent to the NMS by the Agent on the managed device ()

All the devices in the picture can communicate normally. Is the corresponding relationship between the MAC address table of $WA and the port correct? () (Single-choice question)

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. ()

Which of the following are related to the purpose of encapsulation and decapsulation? ()

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)

Management Information Base (MIB) Information Base) is a virtual database, this database only exists on NMS. ()

Which of the following statements about Prefix Segment is wrong? ()

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? ()

Which packet type is used by network devices running the SNMPv1 protocol to actively send alarm information? ()

In the OSI reference model, what can complete end-to-end error detection and flow control is ()

As shown in the figure, is the description of this network topology correct? () (Single-choice question)

AC. Use CAPWAP control tunnel to transmit management messages to FIT AP. ()

In the MAC address table of the switch, which of the following entries will not age? ()

The two-layer switch is a data link layer device, which can identify the MAC address information in the data frame, and record these MAC addresses and corresponding port information in its own MAC address table. ()

Two switches use manual link aggregation at the same time. The following statement is wrong. () (Single-choice question)

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)

Which of the following fields is not included in the HELL0 packet of the OSPF protocol? ()

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

ï¼»RTA-acl-basic-2001ï¼½rule 10 deny source 20.1.1.0 0.0.0.255

The following description of static and dynamic routing is wrong ().

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)

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 ()

What identifies the coverage area of ​​an AP in a WLAN? ()

Which of the following statements about the usage scenarios of the DHCP protocol is correct? ()

Apply the ACL configured in the figure in Telnet. Only the device with the IP address of 172.16.105.2 is allowed to log in remotely: ()#acl number 2000 rule 5 permit source 172.16.105.20#

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 ()

Which information of the data frame is used by the interface to determine whether to forward Layer 2 or Layer 3 forwarding? ()

Which of the following are not the characteristics of a small campus network? ()

The network administrator configures the RTA on the Huawei router as shown in the figure. If a user needs to be authenticated in the authentication domain "huawei", which of the following descriptions is correct? () (Single-choice question)

(RTA) aaa

(RTA-aaa) domain huawei

(RTA-aaa-doaain huavei) authentication -schene au1

(RTA-aaa-dogairhuavel) authenticIcation-schene au2

Which of the following parameters cannot be used for advanced access control lists? ()

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)

What is the destination IP address of the DHCP DISCOER message? ()

Network as shown in the picture. The administrator hopes that all hosts cannot access the Web service (the port number is 80). Other services can be accessed normally. In the interface configuration of G0/0/1, which ACL rule needs to be bound to trattie-frilter outbound?

The network is shown in the figure. Which router is the BDR in this network? () (Single-choice question)

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 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)

At what percentage does the DHCP client send the lease renewal message for the first time? ()

The configuration information of a certain port of the switch is shown in the figure. Which of the following statements is wrong? ()

interface GigabitEthernet0/0/1 port link type trunk port trunk pviD.vlan 200 port trunk allow-pass vlan100#

The network administrator has captured a data frame on the network, and its destination MAC address is 01-00-5E-A0-B1-C3. The correct statement about the MAC. address is ().

In an IPv4 network, AP supports static and DHCP methods to obtain IP addresses. ()

Which of the following descriptions about the switch is wrong?

The origin of SDN is the separation of transfer and control. The separation of transfer and control is a way to realize SDN, not the essence. ()

For switches running the SIP protocol, the port needs to wait for the forwarding delay in the Learning state before it can be converted to the Forwarding state. ()

Among the configuration BPDUs sent by the switch, which bridge D. is unlikely to appear? ()

The IPv6 protocol uses NS and NA. packets for duplicate address detection ()

The following rules exist in an ACL of a router. Rule deny top source192.168, 1.00.0.0.255 destination 172.16.10.1 0.0.0.0 destination-port eq 21 is the correct statement? ()

As shown in the picture. About OSPF topology and configuration. Which of the following statements is correct? () (Single-choice question)

By default, the root path cost of the root bridge in the STP protocol must be 0 ()

As shown in the figure below. Host A and Host B cannot communicate. ()(True or False)

In order to distinguish between different users and provide different network services on the AP. Which of the following can be configured through configuration? ()

The DHCPv6 server supports the provision of other configuration information such as DNS server addresses for the host.

The network shown in the figure below assumes that all routers can enable OSPF at the same time. Which router is the DR in this network? () (Single-choice question)

The number of VLANs that can be created using the commands "vlan batch1020 and "vlan batch10to20" respectively is ()

When two OSPF routers form a 2-WAY neighbor relationship, the LSDB. has been synchronized. ()

What is the default step length of ACL on AR G3 series routers? ()

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?

In the network shown in the figure below, what commands can be entered on the router to make host A ping host B through? ()

The DHCPv6 server supports the provision of other configuration information such as DNS server addresses for the host. ()

By default, on the broadcast networkOSPFWhat is the transmission period of the protocol HELLO message? ()

VRP operating platform, which of the following commands can only view static routes? ()

NAPT allows multiple private IP addresses to be mapped to the same public P address through different port numbers. The following description of the port number in NAPT is correct ().

If the administrator wants to completely delete the old device configuration file, the following command is correct ().

If the application layer protocol is Te1net, then the value of the Protoco1 field in the IPv4 header? ()

Only the WPA2-PSK security policy supports the use of TKIP for data encryption. ()

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? ()

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

By default, what is the period for sending 0SPF HELLO packets on the broadcast network? ()

The basic header length of IPv6 packets is a fixed value ()

Which of the following OSPF versions is suitable for IPv6? ()

Which of the following IPv6 addresses can be abbreviated as 2FFF DAC:ABEF:CDAA:732? ()

In the RSTP protocol, when the edge port receives the configuration BPDU message, it loses the edge port attribute. ()

When AP and MC are in different Layer 3 networks, what method is recommended for AP to discover AC?

In the WLAN architecture, the FIT AP cannot work independently and needs to be managed by AC. Which of the following protocols are used to communicate between FIT AP and AC.? ()

What is RouterDeadInterval of the OSPF protocol on the broadcast network by default? ()

SNMPv1 defines five protocol operations. ()

Now you need to implement a Python automation script Telnet to the device to view the running configuration of the device. What is wrong with the following statement? ()

Switch stacking supports more than two devices, and multiple switches can be grouped into a logical device through stacking. ()

The config mode is the default ACL matching order on Huawei devices. ()

When two OSPF routers form a 2-WAY neighbor relationship, LSDB. has been synchronized. ()

At which layer of the OSI reference model do Ethernet switches operate? ( )

As shown in the figure below. All hosts can communicate normally. Which of the following statements are correct? () (Multiple Choice Questions)

Which parameter is used in the spanning tree protocol for root bridge election? ()

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. ()

Which of the following MAC addresses cannot be used as the MAC address of the host network card? ()*

The following protocols are China's link state routing protocol

Which of the following IPv4 addresses the host uses cannot directly access the Internet? ()

What kind of network equipment can host A and host B use to achieve communication?

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. ()

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. ()

To provide different network services for different users on the AP, which of the following can be configured?

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? ()

According to the command output as shown in the figure, which of the following descriptions is correct? () (Multiple Choice Questions)

In the VRP system, what function does the Ctrl+Z key combination have? ()

The configuration information of a certain port of the switch is shown in the figure. Then, when the data frame of which VLAN is sent by this port, it carries the VLAN TAG? ()interface GigabitEtherneto/0/1 port hybriD.taggeD.vlan 2 to 3 100 port hybriD. untaggeD. vlan 4 6#

Which of the following statements about direct routing is correct? ()

System-view (huawei) command-privilege level3 view user save is correct about the above configuration command ()

Which bridge is in the configuration BPDU sent by the switchID. Impossible to appear?

The load sharing mode at both ends of the Eth-Trunk can be inconsistent ()

A company applies for a C. IP 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, so the subnet mask should be set. for()

An ACL rule is as follows: Which of the following IP addresses can be matched by permit rules? () rule5per mit ip source10.0.2.00.0.254.255

The following description of the Layer 2 Ethernet switch is incorrect ().

What is the value of the Type field in the RStp configuration BPDU message? ()

What is the total length of an IPv6 address in bits? ()

FIT AP does not need AC. It can also work independently ()

To ensure that the same data stream is forwarded on the same physical link, which load sharing method does Eth Trunk use?

Which of the following descriptions about firewalls is wrong? ()

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. ()

On Huawei routers, what is the default value of the OSPF protocol internal routing priority? ()

If the Length/Type of an Ethernet data frame is 0x8100. Which of the following statements is correct?

When two OSPF routers form a 2TAY neighbor relationship, LSDB. has been synchronized.

In a Layer 2 network with redundant links, which of the following protocols can be used to avoid loops?

How to add AP on AC.? ()*

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?

Which of the following applications is based on the TCP protocol?()*

Which frequencies does IEEE802.11n support? ()

Which of the following packets is used by OSPF to describe its link state database (LSDB)?

On the network shown in the following figure, assuming that SWA, SWB, and SWC retain factory defaults, which of the following ports will be selected as a designated port?

Which of the following statements about IPv6 anycast addresses are correct?

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?

As shown in the figure below, assuming that 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 Questions)

For STP, the default root path cost of the root bridge is 0.

During STP calculation, the port cost is associated with the port bandwidth by default. Which of the following statements about the relationship between port cost and port bandwidth is true?

The output information of a certain switch is shown in the figure. Which of the following statements is correct? () (Multiple Choice Questions)

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)

After the two routers are configured with 0SPF, the administrator configures the command on RTA. The following description is correct ()

Only the WPA2-PSK security policy supports TKIP data encryption.

According to the VTY user interface configuration shown in the following figure, the user level is set to 3.

Which of the following is a link-state routing protocol?

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? ()

Which of the following options describes the concept of NFV architecture correct?

What is the total length of the port ID in STP?

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)

As shown in the figure, which of the following ports will be in a blocking state?

Which of the following fields does the MPLS header include? ()*

Which of the following IPv4 addresses can be directly used by a host to access the Internet?

Which of the following methods is not used for logging in to the VRP system?

If the application-layer protocol is Telnet, what is the value of the "Protocol" field in the IPv4 header?

When the LCP phase of PPP is negotiated, the content of the negotiation includes ()*

Which of the following network types are supported by OSPF?

Wi-Fi 6 is also known as the IEEE 802.11ax standard.

The country code configuration affects the actual transmission frequency and maximum transmission power.

Which statement about the dynamic AC. address table is correct?

Which of the following network parameters can be assigned by Dynamic Host Configuration Protocol DHCP? ()*

On the VRP, when the mkdir test command is run, the system creates a directory named test.