A server administrator is installing servers in a rack that does not have rack unit markings on the sides. The available open space for the new servers is approximately 3.5in (8.9cm) high. Which of the following is the LARGEST server size that can fit in this space?
The largest server size that can fit in a space approximately 3.5 inches (8.9 cm) high is 2U. One rack unit (1U) is equal to 1.75 inches (4.45 cm) high, so a 2U server, which is 2 x 1.75 inches = 3.5 inches (8.9 cm) high, fits perfectly in this space.
B. 2U. This server size can fit in this space, as one rack unit is equal to 1.75in (4.45cm) high. Therefore, a 2U server is 2 x 1.75in = 3.5in (8.9cm) high, which matches the available open space for the new servers.
if it was exactly 3.5 inches it would be B but whatever waste of life wrote this questions said approximately so it is A.
B. 2U = 3.5 inches
1U = 1.75in = 3.5in (8.9cm)