The answer is to update the certificate template to specify SHA-256 as the hash algorithm and then reissue the certificates. This is correct because the hash algorithm used for a certificate’s signature is defined within the certificate template itself, not by the CA’s signing algorithm; updating the template ensures that all new certificate requests will automatically enforce SHA-256, while reissuing the affected web server certificates replaces the insecure SHA-1 signatures. On the Systems Security Certified Practitioner SSCP exam, this question tests your understanding of PKI lifecycle management and the distinction between CA-level settings and template-level settings—a common trap is confusing the CA’s own signing hash with the hash algorithm applied to issued certificates. Remember the mnemonic: “Template dictates the hash; the CA just signs the stash.”
SSCP Cryptography Practice Question
This SSCP practice question tests your understanding of cryptography. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company has deployed an internal public key infrastructure (PKI) using Microsoft Active Directory Certificate Services (AD CS) to issue certificates for internal web servers. The certificate policy requires RSA 2048-bit keys and SHA-256 hashing. During a routine security audit, the administrator discovers that several web server certificates issued by the internal CA are using SHA-1 signatures. The CA is configured with a default Web Server certificate template. The administrator wants to ensure that all future certificates from this CA use SHA-256 as the hash algorithm. What is the most effective and secure course of action?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Update the certificate template to specify SHA-256 as the hash algorithm and reissue certificates
Updating the certificate template to specify SHA-256 ensures that all new requests use the correct hash algorithm. Changing the CA signing algorithm (A) does not affect templates; revoking certificates (C) is disruptive and unnecessary; setting security level (D) is vague and does not change the hash algorithm.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Update the certificate template to specify SHA-256 as the hash algorithm and reissue certificates
Why this is correct
This directly addresses the issue and ensures future certificates use SHA-256.
Related concept
Static NAT maps one inside address to one outside address.
✗
Increase the CA's security level in the console and restart the service
Why it's wrong here
This does not change the hash algorithm used in templates.
✗
Modify the CA's signing algorithm in the registry to force SHA-256
Why it's wrong here
The CA signing algorithm does not directly control the template's hash algorithm.
✗
Revoke all SHA-1 certificates and request new ones from a public CA
Why it's wrong here
Unnecessary and disruptive; the internal CA can be fixed.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SSCP NAT questions on configuration and troubleshooting.
Cryptography — This question tests Cryptography — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Update the certificate template to specify SHA-256 as the hash algorithm and reissue certificates — Updating the certificate template to specify SHA-256 ensures that all new requests use the correct hash algorithm. Changing the CA signing algorithm (A) does not affect templates; revoking certificates (C) is disruptive and unnecessary; setting security level (D) is vague and does not change the hash algorithm.
What should I do if I get this SSCP question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SSCP NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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