CISCO CCNA Exam – Q136

Refer to the exhibit.
CISCO CCNA Exam – Q136

What is the most efficient summarization that R1 can use to advertise its networks to R2?

A.
172.1.0.0/22
B.
172.1.0.0/21
C.
172.1.4.0/22
D.
172.1.4.0/24
172.1.5.0/24
172.1.6.0/24
172.1.7.0/24
E.
172.1.4.0/25
172.1.4.128/25
172.1.5.0/24
172.1.6.0/24
172.1.7.0/24

Correct Answer: C

Explanation:
The 172.1.4.0/22 subnet encompasses all routes from the IP range 172.1.4.0 – 172.1.7.255.