Answer:
(a)
(b)
Explanation:
Given
Required
Download time
Solving (a): When Speed =4.2Mb/s
Speed is calculated as:
Make Time the subject:
Substitute values for File Size and Speed
Convert Gb to Mb
Convert to minutes
<em>When converted, it is approximately 2 hours</em>
Solving (a): When Speed =900Kb/s
Substitute values for File Size and Speed
Convert Gb to Kb
Convert to hours
Answer:
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Answer:
The fields of the IPv4 header change from router to router is:
- No Fragmentation - TTL, checksum(due to TTL).
- Fragmentation - Total length field, fragment M bit.
Explanation:
TTL - TTL stands for Time-TO-Live, it is important in an IP(Internet Protocol) packets that says a network router if or not the packets have been in the network so lengthy and should be rejected.
Fragmentation - It is done through the network layer when the mostly size of data-gram is higher than max size of data that can held a frame.
It is done through the network layer at the end side and is generally done at routers.