Huawei certified hcna exam question bank

20 17 Huawei Certified hcna Examination Database

After careful development and layout in recent years, Huawei's certification training system has become the only certification system in the field of ICT technology. The following is a question bank about Huawei certification hcna exam. I hope you can do it seriously!

1, the following devices belonging to the physical layer are (a)

A. Repeater

B. Ethernet switch

C. bridges

D. door

2. In Ethernet, different devices are distinguished according to (b) address.

A.llc address

B.mac address

C.IP address; network address

D.ipx address

The following is the transport layer protocol (cd)

A. Intellectual property rights

b、icmp

c、udp

d、spx

4, the following description about mac address is correct (bc)

A consisting of 32-bit binary numbers.

B, consisting of 48-bit binary numbers.

C, the first 6 bits of 16 are assigned by ieee.

The last 6 bits of d and 16 are assigned by ieee.

5, the following belongs to the data link layer function is (cd)

A, defining data transmission rate

B, define the physical address

C, describe the network topology

D, flow control

6, ieee802.3u standard refers to (b)

A. Ethernet

B. Fast Ethernet

C, token ring network

Fddi network

7, if you want to directly connect two computers through twisted pair, the correct line sequence is (C).

a、 1 - 1、2 - 2、3 - 3、4 - 4、5 - 5、6 - 6、7 - 7、8 - 8

b、 1 - 2、2 - 1、3 - 6、4 - 4、5 - 5、6 - 3、7 - 7、8 - 8

c、 1 - 3、2 - 6、3 - 1、4 - 4、5 - 5、6 - 2、7 - 7、8 - 8

D, two computers cannot be directly connected through twisted pair.

8. In v.35 and v.24, the control signal rts stands for (D).

A, the data terminal is ready;

B, the data is ready;

C, data carrier detection;

D. request to send;

E. clear and send.

9. As a network interconnection device, a router must have the following characteristics. (Abe)

A, support at least two network interfaces

B, the protocol should be implemented at least to the network layer.

C. support at least two subnet protocols.

D, at least one backup port.

E, with storage, forwarding and routing functions.

F, a set of routing protocols

G, must have high protocol processing ability.

10, of the router. The function is (abdg)

I. Heterogeneous network interconnection

B, rate adaptation between subnets

C. Connect more than two computers in the local area network.

Isolate the network, prevent network storms, and specify access rules (firewalls)

E. subnet protocol conversion

F, speed up the transmission of network messages.

G. Routing: establishment, refreshing and searching of routing table.

H. message segmentation and reassembly

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