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CST 2400 Assignment Question 1: In a client-server based network, the host is trying to connect...

CST 2400 Assignment
Question 1: In a client-server based network, the host is trying to connect to the remote host but is not making an active connection which means the connection has timed out. Specifically, the user uses the telnet command to send a packet to a specific address, but no hosts are responding. Assume that the user from the local TCP/IP host issued the following command:
# telnet hostname
telnet ....... connection timed out
Please diagnose the network connection problem.
a. What are the possible causes and potential solutions?
b. What are the possible tools (commands) to diagnose this problem in Linux or Windows based environments?
c. How would you implement these commands?
Question 2: In a client-server based network, all client machines using the MySQL database software hosted on the server, one user recently cannot access the database from the client machine.
d. What could be the possible causes and solutions to this issue and in what real life situation do you think they could arise?
e. What are the possible solutions to this issue?
f. Do you believe that the solutions presented by you can solve the issue in an effective and efficient way? If you are given more time, would you be able to come up with a more efficient solution to this issue?

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Answer #1

a. What are the possible causes and potential solutions?

  • The destination host may not have a proper DNS
  • Or TCP/IP is not properly setup in the host and local PC

b.What are the possible tools (commands) to diagnose this problem in Linux or Windows based environments?

  • Try ping the destination host
    • If the response is <> no of bytes indicates that the destination host is with in the network
    • Next, use a tracert to trace the route or number of network hops that a packet take to reach the destination.

c. How would you implement these commands?

  • ping <ipadress of destination>
  • tracert <ipadress of destination>

d. What could be the possible causes and solutions to this issue and in what real life situation do you think they could arise?

  • Client may not be the network
  • Client user id may not have access to the database

e. What are the possible solutions to this issue?

  • Bring the client host into the network
  • Provide the necessary database access to the client user.

f. Do you believe that the solutions presented by you can solve the issue in an effective and efficient way? If you are given more time, would you be able to come up with a more efficient solution to this issue?

  • one has to see the exception message. If it is related to TCP/IP connect with network team to fix it
  • If it is related MySQL database exception then connect with DBA team to fix the issue.

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