Palo Alto Networks (PANW) Certified Cybersecurity Entry-level Technician (PCCET) Practice Exam

What is the subnet mask for the network 10.2.0.0/20?

1. 255.0.0.0

2. 255.255.0.0

3. 255.255.240.0

4. 255.255.255.0

The correct answer is: 255.255.240.0

The subnet mask for the network 10.2.0.0/20 is represented in CIDR notation as "/20". This indicates that the first 20 bits of the subnet mask are set to 1 (network bits), while the remaining bits are set to 0 (host bits). To convert this into a decimal format, you can break down the 20 bits as follows: - The first 20 bits consist of: - 8 bits for the first octet (255) - 8 bits for the second octet (255) - 4 bits for the third octet (240) - 4 bits for the fourth octet (0) This results in the subnet mask of 255.255.240.0. In binary form, the subnet mask looks like this: - 11111111.11111111.11110000.00000000 When converting this binary representation to decimal, the first two octets are fully utilized (255), the third octet has the first four bits set (240), and the last octet has no bits set (0). Thus, the correct subnet mask corresponding to the network 10.2.0.0/