An engineer must configure a /30 subnet between two routers.
Which usable IP address and subnet mask combination meets this criteria?
A . interface e0/0
description to HQ-A370:98968
ip address 10.2.1.3 255.255.255.252
B . interface e0/0
description to HQ-A370:98968
ip address 192.168.1.1 255.255.255.248
C . interface e0/0
description to HQ-A370:98968
ip address 172.16.1.4 255.255.255.248
D . interface e0/0
description to HQ-A370:98968
ip address 209.165.201.2 255.255.255.252
Answer: D
Explanation:
A /30 subnet means subnet mask of 255.255.255.252. But 10.2.1.3 255.255.255.252 is a broadcast IP address; only 209.165.201.2/30 is the usable IP address.