Question 20
NECO
•
2019
•
COMPUTER_STUDIES
•
objective
An organization has been allocated the IPv4 address block \(192.168.64.0/20\). It needs subnets for three departments with the following host requirements: Admin - 50 hosts; Sales - 120 hosts; R&D - 200 hosts. Determine a subnetting scheme that satisfies each requirement while minimizing wasted addresses. For each department give: 1. Subnet address and prefix length (in / notation). 2. First usable host IP and last usable host IP. Also state the range and size of the remaining unallocated address space.
Answer Options
A.
R&D: 192.168.64.0\/25, usable 192.168.64.1‑192.168.64.126; Sales: 192.168.64.128\/26, usable 192.168.64.129‑192.168.64.190; Admin: 192.168.64.192\/27, usable 192.168.64.193‑192.168.64.222; Remaining: 192.168.64.224‑192.168.79.255 (3584 addresses)
Correct Answer
B.
R&D: 192.168.64.0/24, usable 192.168.64.1‑192.168.64.254; Sales: 192.168.65.0/25, usable 192.168.65.1‑192.168.65.126; Admin: 192.168.65.128/26, usable 192.168.65.129‑192.168.65.190; Remaining: 192.168.65.192‑192.168.79.255 (3648 addresses)
C.
R&D: 192.168.64.0\/23, usable 192.168.64.1‑192.168.65.254; Sales: 192.168.66.0\/25, usable 192.168.66.1‑192.168.66.126; Admin: 192.168.66.128\/26, usable 192.168.66.129‑192.168.66.190; Remaining: 192.168.66.192‑192.168.79.255 (3328 addresses)
D.
R&D: 192.168.64.0\/24, usable 192.168.64.1‑192.168.64.254; Sales: 192.168.65.0\/25, usable 192.168.65.1‑192.168.65.126; Admin: 192.168.65.128\/26, usable 192.168.65.129‑192.168.65.190; Remaining: 192.168.65.191‑192.168.79.255 (3649 addresses)
Correct Answer
B
Correct Option:
R&D: 192.168.64.0/24, usable 192.168.64.1‑192.168.64.254; Sales: 192.168.65.0/25, usable 192.168.65.1‑192.168.65.126; Admin: 192.168.65.128/26, usable 192.168.65.129‑192.168.65.190; Remaining: 192.168.65.192‑192.168.79.255 (3648 addresses)
About This Question
This is
Neco
2019
Computer Studies
Question 20.
It is one of the
objective
questions from the
2019
Neco
Computer Studies
examination.
Difficulty level:
Medium
.