ITPEC FE Morning October 2022 Question 34
ITPEC FE Morning October 2022 — Question 34 of 80
Global vs Private IPv4 Addresses — identify which address is publicly routable.
Private IP ranges (RFC 1918) — everything outside these is global:
- •
10.0.0.0–10.255.255.255(Class A private) - •
172.16.0.0–172.31.255.255(Class B private) - •
192.168.0.0–192.168.255.255(Class C private)
Why (b) 129.10.9.7:
- Does not fall into any private range → globally routable
Why not others:
- (a) 10.10.10.10 — falls in 10.x.x.x private range
- (c) 172.16.1.5 — falls in 172.16.x.x – 172.31.x.x private range
- (d) 192.168.20.3 — falls in 192.168.x.x private range
Key rule: Memorize the three private ranges; any IPv4 address outside them is global.
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