Q.7 if a router used Ethernet LAN 0 port with 173.16.1.14/30. Then what is correct Subnet Mask ?
(a) 255.255.255.2
(b) 255.255.255.0
(c) 255.255.255.254
(d) 255.255.255.252
Answer:-(d)
Explanation
CIDR 30 Means 30 Network bit will one and 2 Host bit will be Zero
so Correct mask is
Binary Representation
11111111.11111111.11111111.11111100
Decimal Representation
255.255.255.252
Correct Answer D
