15-For a Class C IPv4 Address, how many usable hosts are there by default? A- 64516 B-5536 C-255 D-254 E-32768 16- What is the broadcast address for a Class C address of 192.168.145.0 with default Subnet Mask? A-192.168.145.254 D-192.168.0.0 B-192.168.145.255 E-192.168.145.1 C-192.168.145.0 17- Which one of the following is used to build Switching Table? A- All of Them B- Destination IP D- MAC addresses E-Source MAC 18- Which ones are FTP port numbers? A-21 B-32 D-15 E-20 C-Source IP C-25

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Network Protocols

A network protocol is a set of rules that govern how data is exchanged between the devices in a network. Network protocols enable communication between devices that are located in different parts of the world. Consequently, they are critical in today's digital communications.