H12-311 PDF Exam Material 2022 Realistic H12-311 Dumps Questions [Q70-Q90] : Exams Labs Braindumps : http://blog.examslabs.com

NO.70 Spread-spectrum technology is the basis for transmitting wireless data using the ISM band.

True

False

NO.71 The naming of the “AP6010DN” is incorrect.

AP in AP6010DN is the specific prefix of the AP of the enterprise network.

AP6010DN “601” represents the standard indoor placement type 1st generation

The “D” in the AP6010DN represents that the AP is a dual-band AP and supports the 2.4GHz and 5GHz bands.

“N” in AP6010DN means AP is an 802.11n AP.

NO.72 The following is an incorrect way to refer to AP access control (Select 2 Answers).

By default, the access control mode of the AP to the AC is not authenticated.

By configuring the AP in the offline state, authentication is required to automatically access the AP.

The configuration whitelist can be authenticated based on the MAC or authenticated based on the SN.

If the AP access control adopts MAC authentication, the AP outside the MAC authentication list can also be online after being manually confirmed.

NO.73 For the CAPWAP protocol, the following description is wrong.

Transmission protocol between AC and thin AP

Transmission protocol between thin AP and wireless client

Developed by the CAPWAP Working Group The development of the

CAPWAP protocol draws on the useful features of other protocols.

NO.74 TKIP encryption is higher than WEP encryption in security, which of the following are correct? (Multiple choice)

adopt longer IV

joined the key distribution mechanism, instead of using a single key

adopt the more complicated the encryption algorithm

adopt the stronger data validation algorithm

NO.75 Point-to-point wireless bridge can be used to connect two separate network located in different sites, in wireless backhaul connection, Root AP and Leaf AP should set different channels.

True

False

NO.76 For outdoor long-distance point-to-point backhaul, the antenna of should be selected.

High gain, small lobe width

High gain, large lobe width

Omnidirectional

Low gain, large lobe width

NO.77 Which of the following options is not the main purpose of roaming?

avoid roaming in the process of certification time is too long lead to packet loss and even business interruption

ensure that the user authorization information remains the same

ensure that the user IP address remains the same

ensure that the user’s network rate unchanged

NO.78 How many subcarriers can 802.11a use to transmit data in 20M mode?

NO.79 What is the China WLAN security mandatory standard?

WiFi

WAPI

WLAN

WiMax

NO.80 The modulation methods adopted by DSSS are BPSK and QPSK respectively.

TRUE

FALSE

NO.81 The gain of antenna A is 11dBi, and the gain of antenna B is 8dBi. It can be said that antenna A has a larger gain than antenna B.

3dB

3dBi

3dBd

Uncertain

NO.82 Which channels are not overlapped with each other in 802.11b protocol? (Multiple Choice)

NO.83 For the AC6605, the following commands can be used to check whether the AP is online.

display ap online all

display ap all

display ap-type all

dispay ap-run-info all

NO.84 Engineer A deployed a large number of AP during the project implementation process. It was found that there were only 16 AP on AP, and it was not fixed 16. The following reasons which is correct?

AP authentication mode is mac-auth or sn-auth, which causes some AP failed to go online.

Some POE switches fail and AP can’t go online.

License number reaches the upper limit

AP failure can’t be online

NO.85 In TKIP encryption, which bit is the length of IV vector?

NO.86 In Huawei eSight, the method of adding WLAN devices includes (Select 3 Answers).

Add manually

Add automatically

Add in batches

Add script

NO.87 WEP encryption’ data algorithm using which algorithm?

RC4

AES

CCMP

asymmetric encryption

NO.88 Configure the authentication mode of the AP.
What are the authentication modes supported by the AP (Select 3 Answers)?

mac-auth

sn-auth

no-auth

mac-sn-auth

NO.89 IEEE is the standard organization responsible for the use of wireless frequencies in the United States.

True

False

NO.90 If the coverage area has a higher demand on WLAN capacity, it should consider the construction mode of ().

distribute system indoor

distribute system outdoor

Indoor installation

Indoor agile distributed system