The following is a dump of a TCP header in hexadecimal format:

00CD0018 00000EF1 00000D5D 502200D1 01BF0010

We need to first split the above hex as such

00 CD 00 18 00 00 0E F1 00 00 0D 5D 50 22 00 D1 01 BF 00 10

1.1  What is the source port number?

Source port is 2 bytes take 00 CD   = 205

           (00 CD 00 18 00 00 0E F1 00 00 0D 5D 50 22 00 D1 01 BF 00 10)

1.2  What is the destination port number?

Next 2 bytes as destination address 00 18 = 24

1.3  What is the sequence number?

Next 4 bytes as sequence number 00 00 0E F1 = 3825

1.4  What is the acknowledgment number?

Next 4 bytes as acknowledgment number 00 00 0D 5D = 3421

1.5  What is the length of the header?

Next 4 bits as HLEN 5 (this indicates number of sets of 4 bytes which makes the header lenght = 20bytes)

1.6  Which control bits are set and what do they represent?

Next 6 bits are reserved 02 = 02 (10 - remaining (binary))

Next 6 bits are control bits 22= 34 (100010)

1.7  What is the window size?

Next 2 bytes indicate the window length 00 D1 =209

Posted Date: 3/14/2013 2:08:38 AM | Location : United States

Ask an Expert

Related Discussions:- Split the hexadecimal format, Assignment Help, Ask Question on Split the hexadecimal format, Get Answer, Expert's Help, Split the hexadecimal format Discussions

Write discussion on Split the hexadecimal format
Your posts are moderated

Write your message here..

Related Questions

Explain the various methods of file access, Operating Systems 1. Illust... Operating Systems 1. Illustrate the Microkernel Architecture with suitable diagram. 2. When Deadlock occurs? What are the Necessary Conditions for Deadlock? 3. Describe f

Explain inverted page table, Inverted page table In page table the page... Inverted page table In page table the page table has one entry for every page that the process is using. The operating system must translate this reference into a physical memo

Explain acyclic graph directories and its implementation, Acyclic Graph Dir... Acyclic Graph Directories In this kind of directory structure the shared directories or files can exist in the file system in two or more places at once. A tree structure excl

Distinguish between long and short term scheduler, Question 1: a) Disti... Question 1: a) Distinguish between "Long-Term Scheduler" and "Short-Term Scheduler". b) Describe the benefits of "Threads". c) Name three types of CPU Scheduling. Que

File allocation, linked allocation using i node linked allocation using i node

Prepare a short note on the standard linux file system, Problem: a) Pre... Problem: a) Prepare a short note on the standard Linux File System. b) Prepare a short note on the RPM Package Management Tool. c) Briefly explain the two types of login

Give an overview of unix based file systems, Give an overview of UNIX based... Give an overview of UNIX based file systems. UNIX and UNIX-like operating systems allocate a device name to each device, other than this isn't how the files on that device are

Define the dosexit function used in the os/2, Define the DosExit Function u... Define the DosExit Function used in the OS/2 DosExit(action, resultCode)  DosExit function is to be called when a thread or process is finished executing. If EXIT_THREAD is

Explain about deadlock prevention, Explain about deadlock prevention? I... Explain about deadlock prevention? In order for the occurrence of deadlock, the four conditions like mutual exclusion, hold and wait, no pre-emption and  circular wait must hap

Explain next fit algorithm, NEXT FIT ALGORITHM Here scanning starts fro... NEXT FIT ALGORITHM Here scanning starts from the first fit position and then it finds the next position which is large sufficient to hold the process. Thus the name next fit.