1) What is the main purpose of subnetting? a) To divide a network into smaller, more efficient subnetworks b) To increase the number of IP addresses available c) To replace IPv4 with IPv6 d) To assign MAC addresses automatically 2) Which class of IP address has a default subnet mask of 255.255.0.0? a) Class A b) Class B c) Class C d) Class D 3) What does CIDR stand for? a) Classful Inter-Domain Routing b) Classless Internal Domain Routing c) Classless Inter-Domain Routing  d) Classful Internal Domain Routing 4) For the IP address 192.168.4.0/26, what is the custom subnet mask? a) 255.255.255.0 b) 255.255.255.128 c) 255.255.255.192 d) 255.255.255.224 5) How many usable hosts are available in a subnet with the mask 255.255.255.224? a) 30 b) 32 c) 62 d) 64

Topic 3 subnetting

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