What is the CIDR from the following screenshot?

The correct answer is D. /8D./8D./8. CIDR (Classless Inter-Domain Routing) notation expresses an IP address range by appending a prefix length to the IP address (e.g., 10.0.0.0/8). A /8 prefix means the first 8 bits of the address are the network portion, leaving 24 bits for host addresses - covering 16,777,216…

Submitted by omar99· Apr 18, 2026Network Forensics

Question

Exhibit

Options

A/24A./24A./24
B/32B./32B./32
C/16C./16C./16
D/8D./8D./8

How the community answered

(49 responses)

A
2% (1)
B
4% (2)
C
6% (3)
D
88% (43)

Explanation

CIDR (Classless Inter-Domain Routing) notation expresses an IP address range by appending a prefix length to the IP address (e.g., 10.0.0.0/8). A /8 prefix means the first 8 bits of the address are the network portion, leaving 24 bits for host addresses - covering 16,777,216 addresses. This corresponds to a traditional Class A network. A /24 covers 256 addresses (one Class C block), /32 identifies a single host, and /16 covers 65,536 addresses. Based on the referenced screenshot, the network shown uses a /8 prefix, indicating a very large Class A-sized network block.

Topics

#CIDR#IP Addressing#Networking Fundamentals

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