Question 597 of 1,013
SY0-701 General Security Concepts Practice Question
A security team downloads a software update package signed by the vendor. The team verifies the signature using the vendor's public key before approving deployment. What does this verification primarily confirm?
⚠ Common exam trap
Many candidates confuse digital signatures with encryption: candidates often think the public key decrypts the package itself, when in fact it only decrypts the hash, and the package remains unencrypted.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The package was likely created by the vendor and was not altered after signing
Digital signature verification using the vendor's public key confirms that the package was signed with the vendor's private key, which only the vendor possesses. This provides authentication of the signer's identity and integrity of the data, ensuring the package has not been modified since signing. It does not provide confidentiality, as the package itself is not encrypted.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The package can only be decrypted by the vendor's private key
Why it's wrong here
This option describes an encryption scenario: if a package were encrypted with a public key, only the corresponding private key could decrypt it. Digital signature verification, however, does not involve decrypting the package content; the vendor signs a cryptographic hash of the file, and the team verifies that signature using the vendor's public key. Thus the statement confuses confidentiality (encryption) with authenticity/integrity (signing).
- ✓
The package was likely created by the vendor and was not altered after signing
Why this is correct
Digital signature verification checks that the signed data matches what the signer produced and that the signer controlled the corresponding private key. This gives the team confidence in authenticity and integrity. If the file had been modified after signing, verification would fail. That is why signatures are commonly used for software updates and trusted releases.
- ✗
The package is encrypted with the vendor's public key
Why it's wrong here
Saying the package is encrypted with the vendor's public key would imply the vendor used asymmetric encryption to protect the data's confidentiality, so that only the vendor's private key can read it. Code-signing processes do not require or imply encryption of the payload; they compute a digest and sign that digest, leaving the actual file in plaintext. Successful signature verification tells the team the file's integrity and origin are intact, not that the file was encrypted for secrecy.
- ✗
The vendor's certificate has not expired
Why it's wrong here
A certificate expiration check is only a part of validating the signer's identity and key lifecycle; it does not demonstrate that a specific signed file has not been modified. Even if the vendor's certificate is currently valid, an attacker could alter the package, causing the signature verification to fail. The verification's core result is a cryptographic binding between the vendor's private key and the package's exact contents, whereas cert expiration merely indicates whether the certificate is within its issuance validity period.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 11, 2026
This SY0-701 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SY0-701 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.