Which statement correctly distinguishes symmetric encryption from asymmetric encryption?

Symmetric encryption requires a public key infrastructure to distribute keys securely.

Asymmetric encryption is faster than symmetric encryption for bulk data encryption.

Symmetric encryption uses the same key for encryption and decryption, while asymmetric encryption uses a pair of mathematically related keys.

Symmetric encryption is always more secure than asymmetric encryption because it uses longer keys.

A company's internal CA certificate is about to expire. The CA is used to issue certificates to internal servers and clients. The security team must replace the CA certificate with minimal disruption. Which step is most critical to perform first?

Install the new CA certificate on all clients and servers before the old one expires

Revoke all existing certificates immediately

Generate a new private key for every client

Disable certificate revocation checking

Which of the following is a property of a secure cryptographic hash function?

It produces different output lengths depending on the input size.

It always produces a unique hash for every possible input, with no exceptions.

It is collision-resistant, meaning it is difficult to find two different inputs that produce the same hash.

It is reversible with the correct decryption key.

In a Public Key Infrastructure (PKI), what is the primary role of a Certificate Authority (CA)?

To generate and store all users' private keys.

To encrypt all network traffic between clients and servers.

To issue and digitally sign digital certificates.

To verify the identity of users before they log in to a network.

CiscoCertified Support Technician (CCST) Cybersecurity

Domain 1Objective 4

Explain Encryption Methods and Applications 100-160 Practice Questions (Page 1)

Part of the Essential Security Principles domain, which makes up ~18% of our current practice bank. Cisco does not publish an official question count, but from its 50-minute exam (~20–35 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 39 practice questions to prepare you well beyond it. (estimate)

39questions here

8free pages

7concepts

Questions 1–5

1foundation · easy
Which statement correctly distinguishes symmetric encryption from asymmetric encryption?
Select an answer first
2expert · hard
A company's internal CA certificate is about to expire. The CA is used to issue certificates to internal servers and clients. The security team must replace the CA certificate with minimal disruption. Which step is most critical to perform first?
Select an answer first
3foundation · easy
Which of the following is a property of a secure cryptographic hash function?
Select an answer first
4foundation · easy
In a Public Key Infrastructure (PKI), what is the primary role of a Certificate Authority (CA)?
Select an answer first
5application · medium
A security team is evaluating encryption algorithms for a new product. They need to choose a symmetric algorithm that is widely accepted and has no known practical vulnerabilities. Which algorithm should they choose?
Select an answer first

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