Huawei H31-211 today updated questions - Verified by Huawei Experts

HCNA - Carrier IP Questions and Answers

Question 1

What are the forwarding modes of Layer 2 switches? (multiple choice)

Options:

Direct forwarding

Store and forward

Fragment forwarding

Update forwarding

Question 2

Which of the following statements about VRRP is correct? (multiple choice)

Options:

Under normal circumstances, the business is all undertaken by the Master.

When the Master fails, the Backup device takes over the work.

VRRP can only monitor the interface status of VRRP.

VRRP can implement active/standby backup and cannot implement load balancing.

Question 3

On the root bridge of the STP network, the root path cost of each port to the root bridge is 0.

Options:

True

False

Question 4

Twisted pair can be classified as? (multiple choice)

Options:

Direct network cable

Crossover cable

Interwoven network cable

Shielded network cable

Question 5

The firewall must log the traffic logs that pass, but there can be no records for the rejected traffic.

Options:

True

False

Question 6

Which of the following two types of interfaces can the switch be? (multiple choice)

Options:

MDI

MDI_S

MDI_X

MDI_R

Question 7

A company applies for a Class B IP address segment, but to connect 121 subsidiaries. The largest subsidiary has 250 computers. Each subsidiary is in a network segment. The subnet mask can be set to which of the following options. (multiple choice)

Options:

255.255.254.0

255.255.255.0

255.255.255.128

255.255.255.224

Question 8

Which of the following are the ways of flow control? (multiple choice)

Options:

Acknowledgement technology

Buffering technology

Source quench messages (source quench messages)

Window mechanism (windowing)

Question 9

The following is wrong about the STP statement ()

Options:

The STP protocol stipulates that when the port is in the Disabled state, the port does not send or receive any packets.

The STP protocol stipulates that when the port is in the Blocking state, the port does not receive or forward data, but does not send BPDUs, and does not perform address learning.

The STP protocol stipulates that when the port is in the learning state, the port does not receive or forward data, receives and sends BPDUs, and starts address learning.

The STP protocol stipulates that when the port is in the Listening state, the port does not receive or forward data, but does not send BPDUs, and does not perform address learning.

Question 10

Which of the following is the correct description of the mesh structure? (multiple choice)

Options:

In a fully connected mesh network, n(n-1)/2 physical links are required to connect n devices.

In a fully connected mesh network, if one link fails, it will not affect the entire system.

Fully connected network is more robust

The cost of a fully connected network is low and easy to implement

Question 11

Assuming that there is an IP address of 190.5.6.1 and a subnet mask of 255.255.252.0, what is the network segment and subnet broadcast address of the IP address?

Options:

190.5.4.0 190.5.7.255

190.5.4.0 190.5.4.255

190.5.4.0 190.5.4.254

190.5.1.0 190.5.1.255

Question 12

Which layer is responsible for converting unreliable transmission channels into reliable transmission channels, transmitting data frames with parity, and using error control and frame sequential control functions?

Options:

Physical layer

Data link layer

Network layer

Transport layer

Question 13

Which command can be used to display the mapping between network address and DLCI on the Quidway router?

Options:

display fr interface

display fr

display fr map-info

display fr brief

Question 14

Given a subnet address of 5.32.0.0 and a subnet mask of 255.224.0.0, what is the highest host address allowed in this subnet?

Options:

5.32.255.254

5.255.255.254

5.63.255.254

5.54.255.255

Question 15

In the same LAN, A sends a packet to the B host. What is the source IP address of the packet?

Options:

Host A's IP address

Host B's IP address

Host A's gateway IP address

Host B's gateway IP address

Question 16

In the STP calculation, when the port is in the following options, the data frame is not forwarded, and the MAC address table is not learned.

In this state, the port receives and processes STP packets, but does not send STP packets.

Options:

Listening

Blocking

Learning

Forwarding

Question 17

Which of the following protocols gives users a way to log in to a remote server over the network?

Options:

telnet

tracert

ping

ftp

Question 18

Which of the following statements about an OSPF neighboring router are true? (Select multiple)

Options:

Neighbor discovery is equivalent to adjacency establishment.

After an OSPF router receives a Hello packet from the peer OSPF router, it checks the parameters in the packet. If the parameters in the packet from the peer OSPF router are consistent with the parameters of this OSPF router, the two OSPF routers become neighbors of each other.

After a router receives a Hello packet from the peer router, it becomes the neighbor of the peer router.

An OSPF interface broadcasts Hello packets to discover a neighbor.

Question 19

IPv6 cancels the option field in the IPv4 packet header and adds multiple extended packet headers, which improves the processing efficiency and enhances the flexibility of IPv6 and provides a good scalability for the IP protocol.

Options:

True

False

Question 20

How many layers the IS-IS can divided into?

Options:

Question 21

Which of the following statements are correct? (Select multiple)

Options:

Some of the dynamic routing protocols calculate the best path base on the cost value. However, Different routing protocol calculates the metric in different ways.

The calculation of cost may be based on "single" link attribute or several link attributes such as delay, hop count, bandwidth and etc.

When several dynamic routing protocols have the best routes to the same destination, all these routes will be added to the routing table.

The calculation method of the preference and cost in the routing table are the same.

Question 22

What does the distance vector routing protocol focus on according to the discovered routes and calculated routes?

Options:

Whether the egress port on the route belongs to a port aggregation group

Link bandwidth resource information

The address of the next hop specified manually

The number of hops on between the router and the destination

Question 23

Which of the following statements about VLAN communication are true? (Select multiple)

Options:

Layer 3 VLAN interfaces can be configured on a Layer 2 switch to implement VLAN communication.

One-arm routing can be configured for a Layer 2 switch only by using a router to implement VLAN communication.

One-arm routing can be configured for a Layer 3 switch only by using a router to implement VLAN communication.

Layer 3 VLAN interfaces can be configured on a Layer 3 switch to implement VLAN communication.

Question 24

How can the default route be generated? (Select multiple)

Options:

Manually configured

Generated by link layer protocol

Generated by dynamic routing protocols

Automatically generated by the router

Question 25

Which of the following statements about the IPv6 fragmentation operation is correct?

Options:

ICMPv6 is not applicable for fragmentation

Fragmentation can occur only on the start host

Fragmentation can occur only on the start router

Fragmentation operations are similar to Ipv4 operations

Question 26

Which of the following are the formats of Ethernet frame in the switching network? (Select multiple)

Options:

Tagged frame

FDDI frame

Token frame

Untagged frame

Question 27

In IS-IS, which of the following commands is used to change the interface level?

Options:

[Quidway-GigabitEthernet1/0/0] isis circuit-level level-1

[Quidway-GigabitEthernet1/0/0] isis is-level level-1

[Quidway-isis-1] isis level level-1

[Quidway-isis-1] is-level level-1

Question 28

During STP calculation, when a port is in a certain state, it neither forwards any data frame nor learns MAC address labels. Instead, it only receives and processes STP protocol packets. Which state does the abovementioned state refer to?

Options:

Listening

Forwarding

Learning

Blocking

Question 29

Which of the following OSPF versions is specific to the IPv6 technology?

Options:

OSPFv2

OSPFv3

OSPFv4

OSPFv1

Question 30

This type of firewall directly obtains the information such as source IP address, destination IP address, source TCP/UDP port, destination TCP/UDP port and protocol number in the packet header and filters the packets based on the defined policy. Which of the following is the firewall described above?

Options:

Proxy firewall

Packet filtering firewall

Stateful firewall

Link layer firewall

Question 31

Which of the following statements regarding OSPF area are incorrect? (Select multiple)

Options:

Area ID must be assigned by IANA and we can not simply assign it.

OSPF supports area division.

Every OSPF area is identified by a 32-bit Area ID number.

Without manual configuration, an OSPF area is a backbone area with area ID 0 by default.

Question 32

When two routers synchronize their LSDBs, they use which packets to describe their own LSDBs?

Options:

LSR

LSU

Hello

Question 33

Which of the following methods are supported by VRP platform to configure the router?

Options:

Through FTP

Through the AUX port

Through the Console port

Through Telnet

Question 34

All the protocols in the standard HDLC protocol suite run on synchronous serial line.

Options:

True

False

Question 35

What are the main technologies of the firewall ()? (multiple choice)

Options:

Simple packet filtering technology

State detection packet filtering technology

Application proxy technology

Address translation technology

Question 36

Which parameters must be specified to configure a static MAP in a Frame Relay package? (multiple choice)

Options:

Local DLCI

Peer DLCI

Local protocol address

The protocol address of the peer

Question 37

Which of the following is true about the flag field in the HDLC frame? (multiple choice)

Options:

The fixed value is 01111110

Start and end of the flag field flag frame

Two flag fields are required between the two frames at the beginning of the frame and at the end of the frame.

The channel is still active at the time of no frame transmission. In this state, the sender continuously sends the flag field, and the receiver detects each received flag field.

Question 38

Each OSPF router advertises LSAs to the outside through the flooding link state. Which ones are included? (multiple choice)

Options:

Available ports

reachable neighbors

Information about neighboring routers

Local link status information

Question 39

Which of the following options can be used to display the current running status and configuration information of RIP?

Options:

show #rip

show rip

display rip

display this rip

Question 40

TCP is a reliable connection-oriented protocol for connection. Which of the following mechanisms is used to guarantee the reliability of transmission? (multiple choice)

Options:

Acknowledgement mechanism

Buffering

Source quench messages (source quench messages)

Retransmit mechanism

Question 41

Which of the following options does the Tracert command use to determine the route from one host to another on the network? (multiple choice)

Options:

DSCP field

TTL field

ICMP timeout message

ICMP destination unreachable message

Question 42

Fragmentation can occur on the original sender host or on the intermediate router.

After sharding an IP datagram, which of the following cases will be reassembled?

Options:

When the message is looped back

Next router

Intermediate router

Message destination

Question 43

What are the methods to solve the routing loop problem?

Options:

Horizontal segmentation

Route suppression method

Router restart

Define the maximum value of the route metric

Question 44

Eudemon firewall. In general, which security domain is the external service network placed in?

Options:

Local domain

DMZ domain

Trust domain

Untrust domain

Question 45

Which of the following steps does the basic OSPF configuration include? (multiple choice)

Options:

Enable OSPF process

Create an OSPF area

Specify the network segments included in each region

Configure the router to be IR or BR.

Question 46

Which module in the figure below is an SFP optical interface connector?

Options:

Question 47

What are the duplex modes supported by the Ethernet electrical port? (multiple choice)

Options:

Full duplex

Half duplex

Simplex

Auto-negotiation

Question 48

On the VRP platform, which of the following is the command to delete a VLAN?

Options:

undo vlan

vlan undo

delete vlan

vlan delete

Question 49

In the default state of Huawei routers, what is the priority of common routing protocols, from high to low?

Options:

direct > OSPF >ISIS >RIP

OSPF >ISIS >RIP >direct

RIP >ISIS >OSPF >direct

direct >ISIS >OSPF >RIP

Question 50

When a redundant path occurs in a Layer 2 switched network, what method can be used to prevent loop generation and improve network reliability?

Options:

Spanning Tree Protocol

Horizontal segmentation

Toxicity reversal

Shortest path tree

Question 51

TCP uses PDUs (Protocol Data Units) to exchange information between different layers. Which of the following is correct? (multiple choice)

Options:

The PDU of the transport layer is called Packet.

The PDU at the network layer is called Packet.

The PDU of the data link layer is called Segment

The data frame is transferred to the physical layer and converted into a bit stream.

PDUs are given different names in different layers

Question 52

Configure RIP on Router A and enable RIP routing on the network segment where S0 (IP address is 10.0.0.1/24). Which of the following commands are required? (Multiple choice)

Options:

rip

rip 10.0.0.0

network 10.0.0.0 255.255.255.0

network 10.0.0.0

Question 53

RIP (Routing Information Protocol) protocol, based on which algorithm is used to implement routing calculation?

Options:

D-V algorithm

SPI algorithm

Shortest path force priority algorithm

Link state algorithm

Question 54

In a computer system, what can be collectively referred to as data? (multiple choice)

Options:

Number

Voice

Graphics

Display

Letters

Question 55

Which of the following network segments are private addresses? (multiple choice)

Options:

10.0.0.0/8

172.16.0.0/12

192.168.0.0/16

224.0.0.0/8

Question 56

Regarding the characteristics of the OSPF protocol, what are the following statements correct? (multiple choice)

Options:

Support flat network design

Routing changes converge fast

Support multiple equal-cost routes

Support authentication of protocol packets

Question 57

The following description of the characteristics of the LAN, is it incorrect?

Options:

High transmission efficiency and good reliability

Simple structure and convenient construction

Flexible layout and easy expansion

Wide coverage

Question 58

What is the correct statement about the use of split horizon technology for distance vector routing protocols? (multiple choice)

Options:

Avoid routing loops between adjacent routers

Ensure that routing information is no longer sent to the interface that receives the routing information during routing information transmission.

Work in conjunction with the route suppression (holddown) mechanism to avoid routing loops to a certain extent.

Instead of the poison reverse algorithm

Question 59

Which of the following is the standard set by IEEE802.3z/ab?

Options:

Ethernet standard

Fast Ethernet standard

Gigabit Ethernet standard

10GE Ethernet standard

Question 60

Which of the following devices are working at the network layer?

Options:

Hub

Bridge

Switch

Router

Question 61

When using the tracert program to test the path through which the target node passes, how many times does each TTL value Traceroute have to be measured?

Options:

Question 62

Regarding the IP host address, which of the following statements is correct?

Options:

The host part can be all 1

The network segment can be all 1 or all 0

The network segment cannot be all 1 or all 0.

The host part can be all 0

Question 63

Which of the following options can the application PING specify when sending ICMP messages? (multiple choice)

Options:

Source address

Message size

TTL

Transmission frequency

Question 64

The device that runs the STP protocol uses the configuration message BPDU (Bridge Protocol Data Unit). What are the old PDUs that can be classified? (Multiple choice)

Options:

STP BPDU

Configure BPDUs

TCN BPDU

Election BPDU

IP address of the switch

Question 65

When you need to change the metric of the route sent by RIP to increase by 5, while keeping the local corresponding route metric unchanged, which command should you use?

Options:

[RTA-Serial0/0/0]rip metricout 5

[RTA]rip metricout 5

[RTA]rip metricin 5

[RTA-Serial0/0/0]rip metricin 5

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Huawei H31-211 HCNA - Carrier IP Exam Practice Test

HCNA - Carrier IP Questions and Answers

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