Which two statements about the Diffie-Hellman （DH） key excha

第1题：

Which two of these statements best describe the benefits of WPAv2？ （Choose two.）（）

• A、 SSID broadcast prevention
• B、 man-in-the-middle attack protection
• C、 cost reduction through software upgrades in all existing hardware
• D、 dynamic key generation
• E、 RF jamming prevention

第2题：

Which two statements about NTP version 4 are true？（）

• A、It supports fast synchronization at starting and before network failures
• B、It supports automatic server discovery
• C、It uses a fixed-point arithmetion
• D、It supports the "nanokernel" kernel implementation
• E、It does not support Public-Key Cryptography

第3题：

第4题：

Which two statements regarding asymmetric key encryption are true？（）

• A、The same key is used for encryption and decryption.
• B、It is commonly used to create digital certificate signatures.
• C、It uses two keys： one for encryption and a different key for decryption.
• D、An attacker can decrypt data if the attacker captures the key used for encryption

第5题：

Which two statements are true about L2TP tunnels?（） (Choose two.)

• A、Traffic is clear text
• B、Traffic is encrypted 
• C、They are initiated by the LNS
• D、They are initiated by the LAC

第6题：

For the following statements， which one is the strongest symmetrical encryption algorithm？（）

• A、AES
• B、3DES
• C、DES
• D、Diffie-Hellman

第7题：

Which of the following statements that describe Diffie Hellman Key exchange are correct？ （）

• A、 A DH key exchange is an algorithm that utilizes asymmetric cryptographic keys.
• B、 The DH key exchange is used to establish a shared secret over an insecure medium during an IPSec phase 1 exchange.
• C、 The DH exchange is susceptible to man-in-the-middle attacks.
• D、 The DH exchange is used to authenticate the peer device duringan IPSec phase 1 exchange.
• E、A DH exchange provides Perfect Forward Secrecy （PFS）.

第8题：

第9题：

Which two statements about the Diffie-Hellman （DH） key exchange process are correct？（）

• A、In the DH key exchange process， the session key is never passed across the network.
• B、In the DH key exchange process， the public and private keys are mathematically related using the DH algorithm.
• C、In the DH key exchange process， the session key is passed across the network to the peer for confirmation.
• D、In the DH key exchange process， the public and private keys are not mathematically related， ensuring higher security

第10题：

Which two statements are true about precedence values in policy?（） (Choose two.)

• A、1 is the default precedence.
• B、A lower number is preferred.
• C、A higher number is preferred.
• D、100 is the default precedence.