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PDFBraindumps Offers Free CompTIA CAS-004 Questions Demo and UP To 1 year of Free Updates

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CompTIA Advanced Security Practitioner (CASP+) Exam Sample Questions (Q556-Q561):

NEW QUESTION # 556
A security analyst detected a malicious PowerShell attack on a single server. The malware used the Invoke- Expression function to execute an external malicious script. The security analyst scanned the disk with an antivirus application and did not find any IOCs. The security analyst now needs to deploy a protection solution against this type of malware.
Which of the following BEST describes the type of malware the solution should protect against?

  • A. Rootkit
  • B. Logic bomb
  • C. Worm
  • D. Fileless

Answer: D

Explanation:
Reference: https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/tracking- detecting-and-thwarting-powershell-based-malware-and-attacks


NEW QUESTION # 557
An organization is looking to establish more robust security measures by implementing PKI.
Which of the following should the security analyst implement when considering mutual authentication?

  • A. A common public key on each endpoint
  • B. Shared secret for both endpoints
  • C. A common private key on each endpoint
  • D. Perfect forward secrecy on both endpoints
  • E. Public keys on both endpoints

Answer: E

Explanation:
Public keys on both endpoints are required for implementing PKI-based mutual authentication. PKI stands for Public Key Infrastructure, which is a system that manages the creation, distribution, and verification of certificates. Certificates are digital documents that contain public keys and identity information of their owners. Certificates are issued by trusted authorities called Certificate Authorities (CAs), and can be used to prove the identity and authenticity of the certificate holders. Mutual authentication is a process in which two parties authenticate each other at the same time using certificates. Mutual authentication can provide stronger security and privacy than one-way authentication, where only one party is authenticated. In PKI-based mutual authentication, each party has a certificate that contains its public key and identity information, and a private key that corresponds to its public key. The private key is kept secret and never shared with anyone, while the public key is shared and used to verify the identity and signature of the certificate holder. The basic steps of PKI-based mutual authentication are as follows:
Party A sends its certificate to Party B.
Party B verifies Party A's certificate by checking its validity, signature, and trust chain. If the certificate is valid and trusted, Party B extracts Party A's public key from the certificate.
Party B generates a random challenge (such as a nonce or a timestamp) and encrypts it with Party A's public key. Party B sends the encrypted challenge to Party A.
Party A decrypts the challenge with its private key and sends it back to Party B.
Party B compares the received challenge with the original one. If they match, Party B confirms that Party A is the legitimate owner of the certificate and has possession of the private key.
The same steps are repeated in reverse, with Party A verifying Party B's certificate and sending a challenge encrypted with Party B's public key.
A) Perfect forward secrecy on both endpoints is not required for implementing PKI-based mutual authentication. Perfect forward secrecy (PFS) is a property of encryption protocols that ensures that the compromise of a long-term secret key (such as a private key) does not affect the security of past or future session keys (such as symmetric keys). PFS can enhance the security and privacy of encrypted communications, but it does not provide authentication by itself.
B) Shared secret for both endpoints is not required for implementing PKI-based mutual authentication. Shared secret is a method of authentication that relies on a pre-shared piece of information (such as a password or a passphrase) that is known only to both parties. Shared secret can provide simple and fast authentication, but it does not provide non-repudiation or identity verification.
D) A common public key on each endpoint is not required for implementing PKI-based mutual authentication.
A common public key on each endpoint would imply that both parties share the same certificate and private key, which would defeat the purpose of PKI-based mutual authentication. Each party should have its own unique certificate and private key that proves its identity and authenticity.
E) A common private key on each endpoint is not required for implementing PKI-based mutual authentication. A common private key on each endpoint would imply that both parties share the same certificate and public key, which would defeat the purpose of PKI-based mutual authentication. Each party should have its own unique certificate and private key that proves its identity and authenticity.


NEW QUESTION # 558
An organization's existing infrastructure includes site-to-site VPNs between datacenters. In the past year, a sophisticated attacker exploited a zero-day vulnerability on the VPN concentrator. Consequently, the Chief Information Security Officer (CISO) is making infrastructure changes to mitigate the risk of service loss should another zero-day exploit be used against the VPN solution.
Which of the following designs would be BEST for the CISO to use?

  • A. Transitioning to a container-based architecture for site-based services
  • B. Adding a second redundant layer of alternate vendor VPN concentrators
  • C. Using Base64 encoding within the existing site-to-site VPN connections
  • D. Implementing IDS services with each VPN concentrator
  • E. Distributing security resources across VPN sites

Answer: B

Explanation:
If on VPN concentrator goes down due to a zero day threat, having a redundant VPN concentrator of a different vendor should keep you going.


NEW QUESTION # 559
A security compliance requirement states that specific environments that handle sensitive data must be protected by need-to-know restrictions and can only connect toauthorized endpoints. The requirement also states that a DLP solution within the environment must be used to control the data from leaving the environment.
Which of the following should be implemented for privileged users so they can support the environment from their workstations while remaining compliant?

  • A. FIM on the servers storing the data
  • B. NAC to control authorized endpoints
  • C. A jump box in the screened subnet
  • D. A general VPN solution to the primary network

Answer: B

Explanation:
Explanation
Network Access Control (NAC) is used to bolster the network security by restricting the availability of network resources to managed endpoints that don't satisfy the compliance requirements of the Organization.


NEW QUESTION # 560
PKI can be used to support security requirements in the change management process. Which of the following capabilities does PKI provide for messages?

  • A. Non-repudiation
  • B. Confidentiality
  • C. Attestation
  • D. Delivery receipts

Answer: A

Explanation:
Non-repudiation ensures that a sender cannot deny having sent a message, achieved through digital signatures provided by PKI. This aligns with CASP+ objective 3.2, emphasizing cryptographic assurance in communication.


NEW QUESTION # 561
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