Selected MCQ

Current Question
What is the principle of a Hohmann transfer orbit?
  • A. Using multiple gravitation assists
  • B. The most fuel-efficient path between two circular orbits
  • C. Instant teleportation between orbits
  • D. A parabolic escape trajectory
Correct Answer: B
Explanation:
A Hohmann transfer uses two engine burns for an efficient transfer between orbits of different radii.
Related Question 1
Which protocol is used to transfer files over SSH securely?
  • A. FTPS
  • B. HTTPS
  • C. SCP (Secure Copy)
  • D. SMTP
Correct Answer: C
Explanation:
SCP (Secure Copy Protocol) is used to transfer files securely over an SSH connection.
Related Question 2
In a Zero Trust security model, which of the following principles is emphasized?
  • A. Assume the network perimeter is secure
  • B. Verify explicitly every access request
  • C. Trust any device inside the office network
  • D. Use static passwords only
Correct Answer: B
Explanation:
Zero Trust means "never trust, always verify" – everything must be authenticated and authorized.
Related Question 3
Which planet in our solar system has an orbital period shorter than its rotational period (a day longer than its year)?
  • A. Mercury
  • B. Venus
  • C. Mars
  • D. Jupiter
Correct Answer: B
Explanation:
Venus rotates very slowly (a Venusian day is about 243 Earth days) compared to its 225-day orbit around the Sun.
Related Question 4
The exoplanet candidate discovered orbiting Alpha Centauri A is notable because its mass is similar to that of which planet in our Solar System?
  • A. Earth
  • B. Jupiter
  • C. Saturn
  • D. Uranus
Correct Answer: C
Explanation:
Observations suggest an Alpha Centauri A exoplanet with a mass similar to Saturn, likely a gas giant.