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最新的 CCNA Security 640-554 免費考試真題:

1. Which statement about rule-based policies in Cisco Security Manager is true?

A) Rule-based policies contain one or more user roles that control how user traffic is filtered and inspected on a device.
B) Rule-based policies contain one or more rules that are related to a device's security and operations parameters.
C) Rule-based policies contain one or more user roles that are related to a device's security and operations parameters.
D) Rule-based policies contain one or more rules that control how traffic is filtered and inspected on a device.

2. Which statement describes how VPN traffic is encrypted to provide confidentiality when using asymmetric encryption?

A) The sender encrypts the data using the receiver's private key, and the receiver decrypts the data using the receiver's public key.
B) The sender encrypts the data using the sender's public key, and the receiver decrypts the data using the sender's private key.
C) The sender encrypts the data using the sender's public key, and the receiver decrypts the data using the receiver's public key.
D) The sender encrypts the data using the sender's private key, and the receiver decrypts the data using the sender's public key.
E) The sender encrypts the data using the receiver's public key, and the receiver decrypts the data using the receiver's private key.
F) The sender encrypts the data using the receiver's private key, and the receiver decrypts the data using the sender's public key.

3. Which two countermeasures can mitigate STP root bridge attacks? (Choose two.)

A) root guard
B) Layer 2 PDU rate limiter
C) BPDU guard
D) BPDU filtering

4. Which four types of VPN are supported using Cisco ISRs and Cisco ASA appliances? (Choose four.)

A) IPsec clientless remote-access VPNs
B) IPsec site-to-site VPNs
C) SSL site-to-site VPNs
D) SSL clientless remote-access VPNs
E) IPsec client remote-access VPNs
F) SSL full-tunnel client remote-access VPNs

5. Which statement about asymmetric encryption algorithms is true?

A) They use the same key for encryption and decryption of data.
B) They use the same key for decryption but different keys for encryption of data.
C) They use different keys for encryption and decryption of data.
D) They use different keys for decryption but the same key for encryption of data.

問題與答案：