单选题Which of the following is the encryption algorithm used for priv option when using SNMPv3？（）A HMAC-SHAB HMAC-MD5C CBC-DESD AESE 3DES

第1题：

Which of the following is used by BitLocker to lock an encryption key and protect data?（）

• A、ECP
• B、IRQ
• C、AGP
• D、TPM

第2题：

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

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

第3题：

Select the two correctstatements from the list below that describe DES and 3DES： （）

• A、 3DES is muchmore secure than DES.
• B、 Both DES and 3DES are stream ciphers.
• C、 DES uses 64 bitkeys， although the effective key lengthis only 56bits.
• D、 The decryption operation for both DES and 3DES is the same as the encryption operation.
• E、 DES can only be used for encryption， whereas 3DES can also be used for authentication.

第4题：

What are three security problems with Wi-Fi Protected Access （WPA）？（）

• A、WPA is based on the outdated IEEE 802.11i standard.
• B、WPA uses RSN，which uses the same base encryption algorithm as RC4.
• C、WPA requires a hardware upgrade that may not be supported by all vendors.
• D、WPA uses TKIP，which uses the same base encryption algorithm as WEP.
• E、WPA is susceptible to a DoS attack when it receives two packets in quick succession with bad MICs，forcing the AP to shut down the entire Basic Service Set （BSS） for one minute.
• F、WPA is susceptible to a security weakness when preshared keys are used.

第5题：

Refer to the exhibit. What does the option secret 5 in the username global configuration mode commandindicate about the enable secret password？（）

• A、It is hashed using SHA
• B、It is encrypted using DH group 5
• C、It is hashed using MD5
• D、It is encrypted via the service password-encryption command
• E、It is hashed using a proprietary Cisco hashing algorithm
• F、It is encrypted using a proprietary Cisco encryption algorithm

第6题：

Which of the following is the encryption algorithm used for priv option when using SNMPv3？（）

• A、HMAC-SHA
• B、HMAC-MD5
• C、CBC-DES
• D、AES
• E、3DES

第7题：

In the wireless Advanced Feature Set using lightweight access points， a virtual interface is used when supporting which of the following features？（）

• A、PSK authentication
• B、EAP authentication
• C、WPA authentication
• D、Web authentication

第8题：

Which one of the following is NOT a supported IKE attribute？（）

• A、 PFS group.
• B、 Encryption algorithm.
• C、 Hashing Algorithm.
• D、 Authenticationmethod.
• E、 Lifetime duration.

第9题：

PEAP provides authentication for theEAP exchange using： （）

• A、 RC4
• B、 TLS
• C、 SSH
• D、 AES
• E、 3DES

第10题：

Which of the following statements are true？ （）

• A、 RC4 is a stream cipher
• B、 Stream ciphers require padding
• C、 AES is a block cipher
• D、 DES and 3DES are stream ciphers
• E、 AES is a stream cipher
• F、 AES， DES， and 3DES can be used as HMAC algorithms