Question 18
NECO
•
2025
•
COMPUTER_STUDIES
•
objective
A school wants to divide the network \( 192.168.20.0/24 \) into four equal sub‑networks, each of which must support at least 30 usable host addresses. Determine the subnet mask that should be used and give the network address together with the range of usable host addresses for each of the four sub‑nets.
Answer Options
A.
Subnet mask 255.255.255.224. The four sub‑nets are: 192.168.20.0/27 (hosts .1‑.30), 192.168.20.32/27 (hosts .33‑.62), 192.168.20.64/27 (hosts .65‑.94), 192.168.20.128/27 (hosts .129‑.158)
B.
Subnet mask 255.255.255.224. The four sub‑nets are: 192.168.20.0/27 (hosts .1‑.30), 192.168.20.32/27 (hosts .33‑.62), 192.168.20.96/27 (hosts .97‑.126), 192.168.20.128/27 (hosts .129‑.158)
C.
Subnet mask 255.255.255.192. The four sub‑nets are: 192.168.20.0/26 (hosts .1‑.62), 192.168.20.64/26 (hosts .65‑.126), 192.168.20.128/26 (hosts .129‑.190), 192.168.20.192/26 (hosts .193‑.254)
Correct Answer
D.
Subnet mask 255.255.255.224. The four sub‑nets are: 192.168.20.0/27 (hosts .1‑.30), 192.168.20.32/27 (hosts .33‑.62), 192.168.20.64/27 (hosts .65‑.94), 192.168.20.96/27 (hosts .97‑.126).
Correct Answer
D
Correct Option:
Subnet mask 255.255.255.224. The four sub‑nets are: 192.168.20.0/27 (hosts .1‑.30), 192.168.20.32/27 (hosts .33‑.62), 192.168.20.64/27 (hosts .65‑.94), 192.168.20.96/27 (hosts .97‑.126).
About This Question
This is
Neco
2025
Computer Studies
Question 18.
It is one of the
objective
questions from the
2025
Neco
Computer Studies
examination.
Difficulty level:
Medium
.