ExamGecko
Search Search Login
Home Home / CompTIA / CAS-004
Question list
Search
Search

List of questions

Search
Open VPLUS File
Convert VPLUS to PDF

Related questions

An application server was recently upgraded to prefer TLS 1.3, and now users are unable to connect their clients to the server. Attempts to reproduce the error are confirmed, and clients are reporting the following: ERR_SSL_VERSION_OR_CIPHER_MISMATCH Which of the following is MOST likely the root cause?
Ransomware encrypted the entire human resources fileshare for a large financial institution. Security operations personnel were unaware of the activity until it was too late to stop it. The restoration will take approximately four hours, and the last backup occurred 48 hours ago. The management team has indicated that the RPO for a disaster recovery event for this data classification is 24 hours. Based on RPO requirements, which of the following recommendations should the management team make?
Due to locality and budget constraints, an organization's satellite office has a lower bandwidth allocation than other offices in the organization. As a result, the local security infrastructure staff is assessing architectural options that will help preserve network bandwidth and increase speed to both internal and external resources while not sacrificing threat visibility. Which of the following would be the BEST option to implement?
An loT device implements an encryption module built within its SoC where the asymmetric private key has been defined in a write-once read-many portion of the SoC hardware Which of the following should the loT manufacture do if the private key is compromised?
An internal security assessor identified large gaps in a company's IT asset inventory system during a monthly asset review. The assessor is aware of an external audit that is underway. In an effort to avoid external findings, the assessor chooses not to report the gaps in the inventory system. Which of the following legal considerations is the assessor directly violating?
A global organization's Chief Information Security Officer (CISO) has been asked to analyze the risks involved in a plan to move the organization's current MPLS-based WAN network to use commodity Internet and SD-WAN hardware. The SD-WAN provider is currently highly regarded but Is a regional provider. Which of the following is MOST likely identified as a potential risk by the CISO?
An organization is designing a network architecture that must meet the following requirements: Users will only be able to access predefined services. Each user will have a unique allow list defined for access. The system will construct one-to-one subject/object access paths dynamically. Which of the following architectural designs should the organization use to meet these requirements?
A security analyst is concerned that a malicious piece of code was downloaded on a Linux system. After some research, the analyst determines that the suspected piece of code is performing a lot of input/output (I/O) on the disk drive. Based on the output above, from which of the following process IDs can the analyst begin an investigation?
in a situation where the cost of anti-malware exceeds the potential loss from a malware threat, which of the following is the most cost-effective risk response?
A security officer is requiring all personnel working on a special project to obtain a security clearance requisite with the level of all information being accessed Data on this network must be protected at the same level of each clearance holder The need to know must be vended by the data owner Which of the following should the security officer do to meet these requirements?

Question 294 - CAS-004 discussion

Report
Export

An engineering team has deployed a new VPN service that requires client certificates to be used in order to successfully connect. On iOS devices, however, the following error occurs after importing the .p12 certificate file:

mbedTLS: ca certificate undefined

Which of the following is the root cause of this issue?

A.
iOS devices have an empty root certificate chain by default.
Answers
A.
iOS devices have an empty root certificate chain by default.
B.
OpenSSL is not configured to support PKCS#12 certificate files.
Answers
B.
OpenSSL is not configured to support PKCS#12 certificate files.
C.
The VPN client configuration is missing the CA private key.
Answers
C.
The VPN client configuration is missing the CA private key.
D.
The iOS keychain imported only the client public and private keys.
Answers
D.
The iOS keychain imported only the client public and private keys.
Suggested answer: D

Explanation:

The root cause of this issue is that the iOS keychain imported only the client public and private keys, but not the CA certificate. A PKCS#12 file (.p12 or .pfx) is a file format that contains a certificate and its private key, optionally protected by a password. A PKCS#12 file can also contain intermediate certificates or root certificates that are needed to verify the certificate chain. However, when importing a PKCS#12 file into the iOS keychain, only the certificate and its private key are imported, not the CA certificate. This means that the iOS device cannot verify the authenticity of the certificate, and displays the error message ''mbedTLS: ca certificate undefined''. To fix this issue, the CA certificate needs to be imported separately into the iOS keychain, either manually or using a configuration profile. Verified

Reference:

https://developer.apple.com/documentation/devicemanagement/certificatepkcs12

https://support.apple.com/guide/deployment/distribute-certificates-depcdc9a6a3f/web

https://openvpn.net/faq/how-do-i-use-a-client-certificate-and-private-key-from-the-ios-keychain/

Show Answer
asked 02/10/2024
Abbas Maleki
24 questions
PreviousPreviousNextNext
User
Your answer:
0 comments
Sorted by

Leave a comment first

ExamGecko

Copyright @2023 ExamGecko | All right reserved

Mail us: [email protected]
About us
Contact us
Twitter X
Facebook
Medium
Convert VPLUS to PDF
Open VPLUS files Easily and Quickly
Privacy Policy
Disclaimer
Terms