Hosts a and b are communicating over a tcp


2) Hosts A and B are communicating over a TCP connection. Assume that Host B has already received from Host A all bytes up through (and including) byte 3500 (decimal). Suppose Host A then sends a segment containing 200 bytes of data, with source port number 450 and destination port number 80.
a) The size of this segment, including a TCP header of standard size, is ___________ bytes.
(Do not consider lower levels of the protocol hierarchy.)
b) Assuming Host B receives this segment successfully, Host Y will send an acknowledgement with the following information in the TCP header:
The acknowledgement sequence number is _________
The source port number is ________
The destination port number is _________

2) Node A and Node B are connected by 1.6 km cable with no repeaters,
as part of an IEEE 802.3 network that runs at 1Gbps. What is the maximum frame (packet) size in Bytes that can be supported, so that the first bit does NOT yet reach Node B when Node A stops transmitting? Assume the signal speed in the cable is 2 * 10^8 m/s.
(Hint: Transmitting such a packet would result in transmission delay and propagation delay being the same)

3) Find the range of IP addresses that are in block 121.19.12.64/28. Include reserved addresses in your answer.

4) Specify which layer of the OSI reference model best matches the following protocols/technologies:
(a) UDP: 
(b) TCP: 
(c) HTTP: 
(d) 802.11 a/b/g: 
(e) IP

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Basic Computer Science: Hosts a and b are communicating over a tcp
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