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Huawei H11-811 Dumps

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Total 235 questions
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Huawei Certified Network Associate - Unified Communication Questions and Answers

Question 1

Numbers have been allocated to SIP users on the U1900 series unified gateway. Numbers can be allocated to analog phones directly connected to the IAD only after () are configured on the IAD. (Multiple Choice)

Options:

A.

SIP server IP address

B.

FXS users

C.

FXO users

D.

SIP Trunk parameters

Question 2

If you hear the prompt "The number you dial does not exist " when call an inner-office user, the possible reason is (). (Multiple Choice)

Options:

A.

The maxlength of the corresponding inter prefix is set too short.

B.

Trunk fault.

C.

The dialed number is not configured.

D.

U1900 MTU board fault.

Question 3

Which of the following statements is CORRECT about the VoIP features?

Options:

A.

The transmission media is PSTN.

The switching mode is circuit switching.

The VoIP features high bandwidth utilization.

B.

The transmission media is the IP network.

The switching mode is packet switching.

The VoIP features high bandwidth utilization.

C.

The transmission media is the IP network.

The switching mode is packet switching.

The VoIP features low bandwidth utilization.

D.

The transmission media is PSTN.

The switching mode is circuit switching.

The VoIP features low bandwidth utilization.

Question 4

Users with the () rights can make international toll calls in any time segment.

Options:

A.

Default

B.

Common

C.

Advanced

D.

Super

Question 5

A U1911 is separately deployed in two office locations of an enterprise. The two U1911s are connected through a SIP trunk. In this scenario, calls between extensions in the two office locations are ().

Options:

A.

Intra-office calls

B.

Local calls

C.

Local intra-office calls

D.

Local regeneration calls

Question 6

Which of the following statements are CORRECT about how to configure a peer device of the SIP trunk on the U1900 series unified gateway? (Multiple Choice)

Options:

A.

Add the domain name of the peer device.

B.

Configure the peer device EID.

C.

Configure the protocol port of the peer device,

D.

Configure the IP address of the peer device.

Question 7

To enable the automatic number allocation function, set the BIN channel parameters of the U1900 on eSight, among which the password must be set to the ()?

Options:

A.

Password to access the View mode of the U1900

B.

Password to access the Config mode of the U1900

C.

Password of the Super mode of the U1900

D.

All of the above

Question 8

Which of the following statements is CORRECT about FXO and FXS ports?

Options:

A.

FXO port on the PBX connects to the POTS phone.

B.

An FXS port can connect to another FXS port.

C.

An office has deployed an IAD to provide call services for 10 employees. In this scenario, the FXS port on the IAD can be used for PSTN outgoing calls.

D.

The phone line of a POTS phone connects to an FXO port.

Question 9

Which of the following statements is INCORRECT about the mode for setting the eSpace 7950 IP phone IP address?

Options:

A.

On the IP phone LCD login screen, press the Network softkey and choose IPV4 Setting.

B.

On the IP phone LCD home screen, choose Apps > Advanced > Network > IPv4 Setting.

C.

When you obtain the current IP address of the IP phone, you can use the administrator account to log in to the web page to change the IP address.

D.

If the IP phone fails to be registered, you can change the IP address only on the IP phone LCD screen.

Question 10

If IP phone A and analog phone B directly register with the same U1960 unified gateway, which of the following statements is CORRECT?

Options:

A.

Media streams of A and B do not need to pass through U1960.

B.

If A and B are engaged in a call, the signaling path is different from the media path.

C.

When A and B are engaged in a call and U1960 encounters an unexpected power failure, the call between A and B is not interrupted immediately.

D.

After U1960 is powered off, A and B cannot initiate new calls.

Question 11

An eSpace 7950 supports a maximum of 12 concurrent calls and 12 login accounts.

Options:

A.

TRUE

B.

FALSE

Question 12

Which of the following statements is CORRECT about the mode for querying the IP address of an IAD?

Options:

A.

Dial *125 on the phone connected to the IAD. Then, the voice announcement plays the IP address.

B.

Dial *128 on the phone connected to the IAD. Then, the voice announcement plays the IP address.

C.

Log in to the IAD through the serial port and run the display ipaddress command to view the IP address of the device.

D.

None of the above

Question 13

In which of the following conditions may call barring occur? (Multiple Choice)

Options:

A.

When the CPU usage of IP PBX exceeds the threshold

B.

When the bill pool of IP PBX is full

C.

When the trunk usage exceeds a certain level

D.

MTU board fault

Question 14

eSpace IP phones support the () function that can provide the PC port link for the PC connection.

Options:

A.

Route

B.

Bridge

C.

Switch

D.

Console

Question 15

A () network is suitable for an enterprise with no more than 20,000 users that does not have branches or has branches that do not require bcal regeneration.

Options:

A.

Single -node

B.

Centralized call management

C.

Distributed call management (peer-to-peer mode)

D.

Distributed call management (aggregation mode)

Question 16

In the U1900 connecting to PSTN with the El trunk, the Tx and Rx indicators are off but the call service still fails. To locate the fault, which of the following operations are required? (Multiple Choice)

Options:

A.

Perform the CRC check.

B.

Check the position parameter.

C.

Check the clock source.

D.

Check the El cable.

Question 17

When scheduling the multi-point voice conference, the U1960 provides conference resources through the () board

Options:

A.

MTU

B.

ASI

C.

DTU

D.

SCU

Question 18

Which of the following statements is INCORRECT about the mode for querying the eSpace 7950 IP phone IP address?

Options:

A.

On the IP phone LCD login screen, press the Network softkey and choose Status.

B.

On the IP phone LCD home screen, choose Apps > Status.

C.

When you obtain the current IP address of the IP phone, you can use the administrator account to log in to the web page to query the IP address.

D.

If the IP phone fails to be registered, you can query the IP address only on the IP phone LCD screen.

Question 19

Which of the following statements is CORRECT about configuring a SIP trunk on the U1900?

Options:

A.

Different domain names can map the same IP address.

B.

A domain name can map different IP addresses.

C.

Domain names and IP addresses must have a one-to-one mapping relationship.

D.

The domain name must be the same as that configured on the peer device connected to the SIP trunk.

Question 20

Which of the following statements are CORRECT about the automatic switchboard service of U1900?

(Multiple Choice)

Options:

A.

Automatically playing customized announcements is supported.

B.

You can configure the system default automatic switchboard by simply adding a prefix and executing the corresponding script.

C.

The customized greetings must be converted to .wav format.

D.

The automatic switchboard number is essentially a prefix.

Question 21

eSight, DNS server, and DHCP server have been deployed in the live network of an enterprise. If 200 IP phones are added, which of the following methods cannot be used to configure the TR069 parameter for the IP phones in batches?

Options:

A.

On the DNS server, configure the mapping between the domain name and the IP address of eSight.

B.

Deliver the TR069 parameter to the IP phones in batches through the DHCP Option246 field

C.

Use access scan.

D.

Perform configurations on the web configuration page of the IP phones.

Question 22

Which of the following statements about IAD configuration mode is INCORRECT?

Options:

A.

Support the CUT configuration mode.

B.

Support the WEB configuration mode.

C.

Provide three accounts, root, system, and user in CLE configuration mode.

D.

The root account for logging in to the web management system is different from the root account for logging in to the CLI.

Question 23

To change the initial IP address of an IAD in web mode, connect the physical network of the PC to that of the IAD and set the IP address of the PC to the same network segment of the IP address of the IAD.

Options:

A.

TRUE

B.

FALSE

Question 24

A company plans to purchase a U1900 unified gateway. To support 1000 conference participants at most, A company should choose().

Options:

A.

U1911

B.

U1960

C.

U1981

D.

U1980

Question 25

In U1900 series unified gateway, which of the following is CORRECT concerning number conversion priority?

Options:

A.

Number change < Number mapping < Long and short numbers

B.

Number mapping < Long and short numbers < Number change

C.

Number mapping < Number change < Long and short numbers

D.

Long and short numbers < Number change < Number mapping

Question 26

The IAD is deployed at the () layer of the eSpace IFF system.

Options:

A.

Service

B.

Control

C.

Access and Terminal

D.

Management

Question 27

On U1900 series unified gateways, which of the following boards provides DSP resources for calls and plays announcements?

Options:

A.

SCU

B.

OSU

C.

ASI

D.

MTU

Question 28

Which of the following statements is CORRECT about call rights for U1900?

Options:

A.

U1900 supports four default call rights. Users can customize call rights.

B.

Users with the default service level have national call right for outgoing calls.

C.

Users assigned the national call rights only have national call rights for outgoing calls (except for intra and local call).

D.

Users assigned the international call rights have intra, local, and international call rights for outgoing calls.

Question 29

Before replacing a U1900 board, you need to wear grounded electrostatic discharge (ESD) wrist strap to prevent electric circuits from being damaged by ESD. Then, you can directly touch the electric circuits in the board when replacing the board.

Options:

A.

TRUE

B.

FALSE

Question 30

Which of the following statements are CORRECT about the narrowband trunk? (Multiple Choice)

Options:

A.

The ATO is a type of narrowband trunk.

B.

The SS7 can be configured at the user side or at the network side.

C.

The PRA uses the 30B+D structure.

D.

The R2 refers to CNo.1.

Question 31

When an eSpace IP phone is deployed with a PC, the network port of the eSpace IP phone must be connected to the switch independently.

Options:

A.

TRUE

B.

FALSE

Question 32

Which of the following statements are CORRECT about configuring the clock for a PRA trunk on U1900?

(Multiple Choice)

Options:

A.

The clock source can be the U1900 itself or the peer device.

B.

The clock is configured to prevent frame slip caused by asynchronous clocks.

C.

If the U1900 is connected to multiple devices using Tl/El trunks, each trunk requires a clock source.

D.

If the U1900 provides the clock source, you still need to configure the clock source.

Question 33

To upgrade eSpace IP phones in batches in DHCP Option 246 mode, obtain the IP addresses of the IP phones through () after the IP phones are powered on.

Options:

A.

HTTP server

B.

File server

C.

DHCP server

D.

U1900 unified gateway

Question 34

When If4PSTN parameter is set to no, it means ( ).

Options:

A.

outgoing calls are not allowed

B.

internal calls within the virtual PBX cannot go to the PSTN

C.

external users cannot make incoming calls through the PSTN

D.

intra-office call control

Question 35

Under the same network conditions, which of the following codec provides the best voice quality?

Options:

A.

G.711

B.

G.726

C.

G.723.1

D.

G.728

E.

G.729

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Total 235 questions
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