NETWORK LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Source IP address
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Destination IP address
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Protocol
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Time-to-live
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ID
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Detailed explanation-1: -The IPv4 address is a 32-bit number that uniquely identifies a network interface on a machine. An IPv4 address is typically written in decimal digits, formatted as four 8-bit fields that are separated by periods.
Detailed explanation-2: -The first header field in an IP packet is the four-bit version field. For IPv4, this is always equal to 4. The IPv4 header is variable in size due to the optional 14th field (options). The IHL field contains the size of the IPv4 header; it has 4 bits that specify the number of 32-bit words in the header.
Detailed explanation-3: -The two most commonly referenced fields are the source and destination IP addresses. These fields identify where the packet is from and where it is going. Typically these addresses do not change while travelling from the source to the destination.