Huawei Huawei Certifications H12-311 Questions & Answers

• Question 101:

  If the terminal supports both 5 GHz and 2.4 GHz functions, the AP can be configured to control such terminals to preferentially access 5 GHz.

  A. True

  B. False

  Correct Answer: A

• Question 102:

  The following service models can provide end-to-end QoS services, but the scalability is not good.

  A. Best Effort model

  B. IntServ model

  C. FIFO model

  D. DiffServ model

  Correct Answer: B

• Question 103:

  The following is a description of TKIP encryption. The error is .

  A. The length of the IV used in A. TKIP encryption is 24bits.

  B. TKIP encryption uses the same encryption algorithm as WEP encryption.

  C. The motivation for developing TKIP encryption is to upgrade the security of legacy WEP hardware.

  D. Added the mechanism of key generation, management and delivery in TKIP encryption.

  Correct Answer: A

• Question 104:

  TKIP encryption is more secure than WEP encryption because (Select 3 Answers).

  A. Adopt a longer IV

  B. Added a key distribution mechanism, no longer using a single key

  C. Adopting a more complex encryption algorithm

  D. Using a stronger data verification algorithm

  Correct Answer: ABD

• Question 105:

  The following statement is correct (Select 2 Answers)?

  A. The web authentication is triggered by the user's http packet before the IP address is successfully obtained. At this time, the user is forced to redirect to the portal server to perform the authentication process.

  B. When the user obtains the IP address successfully, the user triggers the HTTP packet of the user. At this time, the user is forced to redirect to the portal server to perform the authentication process.

  C. WPA2 uses 802.1X authentication

  D. WPA only supports one encryption technology of TKIP

  Correct Answer: BC

• Question 106:

  In the thin AP networking, which of the following authentication methods does not require AC participation during the authentication process.

  A. Shared key authentication

  B. 802.1X authentication

  C. PSK authentication

  D. Portal authentication

  Correct Answer: A

• Question 107:

  The user authentication-based security policy that is currently used extensively in enterprise networks is (Select 2 Answers).

  A. WPA1 PSK+TKIP/CCMP

  B. WPA1 802.1X+TKIP/CCMP

  C. WPA2 PSK+TKIP/CCMP

  D. WPA2 802.1X+TKIP/CCMP

  Correct Answer: BD

• Question 108:

  WIDS attack detection includes (Select 3 Answers).

  A. Flood attack detection

  B. Weak IV attack detection

  C. Spoof attack detection

  D. Microwave interference detection

  Correct Answer: ABC

• Question 109:

  The following description of WEP encryption is wrong.

  A. WEP encryption uses a stream encryption algorithm.

  B. WEP encryption adds IV to destroy the regularity of the key.

  C. The length of the IV in C. WEP encryption is 48 bits.

  D. WEP encryption allows the device to store four keys at the same time.

  Correct Answer: C

• Question 110:

  The following description of the PSK certification is incorrect.

  A. PSK authentication requires the same pre-shared key to be configured on the wireless client and device side.

  B. WPA and WPA2 support PSK certification

  C. PSK authentication process is similar to the shared key authentication process, so the security is the same.

  D. PSK authentication is to verify the legitimacy of the STA side key through 4-way handshake key negotiation.

  Correct Answer: A