Selected MCQ

Current Question
Which celestial event occurs when the Moon passes directly between the Sun and Earth?
  • A. Total lunar eclipse
  • B. Solar eclipse
  • C. Meteor shower
  • D. Transit of Venus
Correct Answer: B
Explanation:
A solar eclipse happens when the Moon blocks the Sun as seen from Earth.
Related Question 1
What type of celestial object is often referred to as a "baby star" still in formation?
  • A. White dwarf
  • B. Brown dwarf
  • C. Protostar
  • D. Red giant
Correct Answer: C
Explanation:
A protostar is a very young star still forming from a collapsing gas cloud.
Related Question 2
Which mission was the first to land humans on the Moon successfully?
  • A. Apollo 11
  • B. Apollo 13
  • C. Mercury-Redstone
  • D. Gemini 4
Correct Answer: A
Explanation:
Apollo 11 in 1969 was the first crewed Moon landing.
Related Question 3
Which space probe provided detailed images of Saturn's rings and moons?
  • A. Voyager 1
  • B. Hubble Telescope
  • C. Cassini
  • D. Sputnik
Correct Answer: C
Explanation:
Cassini orbited Saturn and studied its rings and moons in detail.
Related Question 4
What does 'API rate limiting' help prevent in web services?
  • A. Unauthorized access
  • B. Excessive use of resources by a client
  • C. Data encryption
  • D. Server hardware failure
Correct Answer: B
Explanation:
Rate limiting controls how many requests a client can make, preventing resource overload.
Related Question 5
What is the difference between a virus and a worm in malware classification?
  • A. A worm requires a host file; a virus does not
  • B. A virus self-replicates; a worm needs a host file
  • C. A virus requires a host file; a worm self-replicates and spreads autonomously
  • D. No difference; they are synonyms
Correct Answer: C
Explanation:
Viruses require host programs to propagate, whereas worms can self-replicate and spread without attaching to files.