Practice for the GIAC Security Essentials (GSEC) exam with 16 exam-style practice questions, instant answer reveals, and concise explanations of every correct answer. Topics include: During the implementation of a risk management process, you select security mechanisms and countermeasures to address id. Follow @CertPunch and visit certpunch.com for more certification practice exams and study content.
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What you will practice
- During the implementation of a risk management process, you select security mechanisms and countermeasures to…
- Why would someone choose to use a digital signature? (Choose two.)
- An investigator has intercepted a steganography communication from the suspect. The investigator has both a k…
- Why are certificates a reliable form of authentication?
- Which of the following is a mechanism for encrypting data at rest rather than in transit?
- How is the level of risk of a specific threat against a specific asset calculated?
Answers and explanations
Tap a question to expand the answer and the exam reasoning. Try to commit to your own pick first.
Q1. During the implementation of a risk management process, you select security mechanisms and countermeasures to address identified risks. In which phase does this activity occur?
Answer: D. D) Safeguard selection
Selecting security mechanisms and mitigation options occurs during the safeguard selection phase of risk management. This step happens before cost benefit analysis, where you determine if deploying the chosen countermeasure makes financial sense.
Q2. Why would someone choose to use a digital signature? (Choose two.)
Answer: A,E. A) To prove that a message did not change in transit || E) To indicate the communication's sender
Digital signatures use the sender's private key to encrypt a message hash, verifying integrity and authenticating the sender's identity. Be careful not to confuse signatures with encryption; signatures do not provide confidentiality or restrict who can read the message.
Q3. An investigator has intercepted a steganography communication from the suspect. The investigator has both a known host file and a known tool, and uses them with the intercepted content to create various steganography outputs in an attempt…
Answer: B. B) Chosen-message
The chosen-message technique uses an intercepted communication and a known host file with a known tool to re-create steganography outputs. Contrast this with known-cover, which simply compares an original cover file directly against an already embedded version.
Q4. Why are certificates a reliable form of authentication?
Answer: A. A) They are a third-party proof with public key cryptography.
Digital certificates are reliable because a trusted third party, known as a certificate authority, validates the subject's identity using public key cryptography. Distractors mentioning biometrics, cloud storage, or memorized information describe different authentication factors or delivery mechanisms, not the core mechanism.
Q5. Which of the following is a mechanism for encrypting data at rest rather than in transit?
Answer: C. C) EFS
The Encrypting File System, or EFS, provides data at rest encryption for files stored on disk. The other choices are protocols designed to encrypt data in transit across a network, protecting communications rather than stored files.
Q6. How is the level of risk of a specific threat against a specific asset calculated?
Answer: C. C) Asset value * percentage of potential loss * annualized rate of occurrence
The correct formula multiplies asset value by the exposure factor and the annualized rate of occurrence to calculate annualized loss expectancy. The other primary formula shown is used for cost-benefit analysis rather than determining the inherent risk level.
Q7. Why is it important NOT to accept a certificate from an unknown CA while surfing the Internet?
Answer: D. D) Trust in the third party is not established.
Accepting an unknown certificate authority establishes trust in an unverified third party, breaking the chain of trust. You should only trust root certificates pre-installed by the operating system or explicitly approved by administrators.
Q8. Which action on the part of a sender will be accompanied by their digital certificate when they send a communication to a recipient?
Answer: C. C) Using a digital signature
Applying a digital signature uses the sender's private key, which automatically includes their public certificate. This allows the recipient to verify identity and validate the signature.
Q9. Why should a telecommuting employee choose to use a host-to-site VPN instead of a TLS-encrypted Web link to access internal company resources?
Answer: C. C) Link-based security tunneling
A host-to-site virtual private network provides link-based security tunneling that encapsulates all traffic, not just web communications. However, this is technically ambiguous because modern TLS VPNs also provide host-to-site access using application-layer encryption.
Q10. What is the proper order of steps for a recipient to validate the identity of the sender when they receive a communication that has been identified by a digital certificate?
Answer: D. D) Check hash, discover CA, check TRL, check validity dates, check for revocation, and make trust choice
The certificate validation process begins by checking the hash to ensure file integrity, then discovering the issuing certificate authority, and ending with a final trust choice. Always verify that the digital fingerprint remains completely unaltered first.
Q11. What is the primary use for cryptography?
Answer: C. C) To provide data confidentiality
The primary purpose of cryptography is to provide data confidentiality through encryption. While hashing provides integrity and digital signatures offer authentication, confidentiality remains the foundational reason for deploying cryptographic solutions.
Q12. Which mathematical concept was created to improve the security of substitution ciphers, and was revised for use in the modern key exchange process known as Diffie-Hellman?
Answer: C. C) Modulo
Modulo arithmetic calculates the remainder of a division operation, serving as a one-way function that improves substitution cipher security. For the exam, remember that modulo mathematics is also the foundational concept used to secure the Diffie Hellman key exchange process.
Q13. Why are the rules of evidence so important to follow when collecting evidence from computer systems?
Answer: A. A) Computer evidence is classified as hearsay evidence.
Computer evidence is legally classified as hearsay, requiring strict collection procedures to qualify for the business records exemption. Proper chain of custody and hashing are required to prove that digital evidence remains unaltered.
Q14. What function does a physical authentication token with a display screen provide?
Answer: B. B) One-time password
A hardware token with a display screen generates dynamic one-time passwords for authentication. This time-based password changes frequently, preventing replay attacks even if an attacker intercepts the credentials.
Q15. Which of the following auditing metrics evaluates the effectiveness of administrative privilege controls?
Answer: B. B) Monitor which users perform system management or account management operations.
Monitoring which users perform system or account management operations directly evaluates the control of administrative privileges. Watching for unauthorized privileged actions ensures that elevated access is strictly limited and properly tracked.
Q16. You are assessing a database asset threatened by electrostatic discharge. Given an asset value of $10,000,000, an exposure factor of 50%, and an annualized rate of occurrence of 10 per year, what is the yearly level of risk (ALE) for the o…
Answer: G. C) $50,000,000
To find the annualized loss expectancy, multiply the asset value by the exposure factor and the annualized rate of occurrence. This calculates the estimated yearly financial loss, helping prioritize which risks require immediate mitigation.
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