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Exam SY0-501 topic 1 question 9 discussion

Actual exam question from CompTIA's SY0-501
Question #: 9
Topic #: 1
[All SY0-501 Questions]

A security engineer is configuring a system that requires the X.509 certificate information to be pasted into a form field in Base64 encoded format to import it into the system. Which of the following certificate formats should the engineer use to obtain the information in the required format?

  • A. PFX
  • B. PEM
  • C. DER
  • D. CER
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️

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Katiekins
2 years, 10 months ago
Yep PEM Base64
upvoted 1 times
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Aarongreene
3 years ago
In D.Gibson book page 462. CER = USED for Binary Certificates DER =ASCII used for ASCII certificates PEM= both( most commonly used certificate format and can be used for just about any cert. type.
upvoted 3 times
Texrax
2 years, 11 months ago
I have this book and confirmed this information is present.
upvoted 2 times
Heymannicerouter
2 years, 11 months ago
Gibson mixed up CER and DER on the book; it's actually DER for binary certs and CER for ASCII certs https://getcertifiedgetahead.com/security-sy0-501-study-guide-errata-page/
upvoted 3 times
Texrax
2 years, 11 months ago
That's great. Thank you!!
upvoted 1 times
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Lobizon
2 years, 11 months ago
Wow, thank you for this DER Binary and CER ASCII correction to comments above...and this link that corrects a lot of Errata.
upvoted 1 times
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Dragi
3 years ago
PEM Base64 DER Binary CER Both Mike Mayers and Security+ Study Guide
upvoted 2 times
Texrax
2 years, 11 months ago
Double check these as it conflicts with D. Gibson.
upvoted 2 times
Texrax
2 years, 9 months ago
Wish I could delete my comment. Dragi's comment is correct.
upvoted 3 times
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Tommy_Wang
3 years, 5 months ago
pem base64 coding
upvoted 1 times
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Hanzero
3 years, 6 months ago
PEM it is boiz
upvoted 3 times
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Jo3
3 years, 9 months ago
B. Privacy Enhanced Mail. A common format for PKI certificates. It can use either CER (ASCII) or DER (binary) formats and can be used for almost any type of certificates. CER and DER formats are defined by the ITU-T in the X.690 standard. Darril Gibson - CompTIA Security+ Get Certified Get Ahead
upvoted 1 times
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dinosan
4 years, 1 month ago
PEM The PEM extension is used for different types of X.509v3 files that contain ASCII (Base64) armored data prefixed with a -- BEGIN ... line. Source: Study Guide by Sybex (p.262)
upvoted 2 times
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Elb
4 years, 2 months ago
B. A PEM file, which is a Base64 encoded DER file, is that same X. 509 certificate, but encoded in text, which (remember!) is represented as ASCII
upvoted 3 times
dieglhix
3 years, 7 months ago
can be either ASCII or BIN "PEM is derived from the Privacy Enhanced Mail format, but that is misleading. It implies that PEM-based certificates are used for email only. However, PEM-based certificates can be used for just about anything. They can be formatted as CER (binary files) or DER (ASCII files). They can also be used to share public keys within a certificate, request certificates from a CA as a CSR, install a private key on a server, publish a CRL, or share the full certificate chain."
upvoted 3 times
DdCc
3 years, 5 months ago
CER(ASCII) DER(Binary)
upvoted 1 times
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Aksu1994
4 years, 11 months ago
Why not CER? CER is ASCII (BASE64) format
upvoted 3 times
Hot_156
3 years, 10 months ago
CER is not ASCII. DER is ASCII. PEM is used for servers certificates and it is x.509
upvoted 2 times
AllenFox
3 years, 9 months ago
No, you're incorrect. Refer this https://blogs.getcertifiedgetahead.com/der-and-cer/
upvoted 2 times
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AlwaysInvade
4 years, 10 months ago
Key part of the question is about x.509 PEM is X.509v3 and contains Base64 (ASCII) whereas CER is not X.509, but contains Base64.
upvoted 15 times
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