Thursday, February 28, 2013

It220 - Homework Unit 2.1 q. 1-37

Homework Unit 2.1

1. What are the four molds of the TCP/IP good example?
i. employment Defines the applications used to process requests and what ports and sockets are used.
I. (This layer is used to process requests from hosts and to make sure a federation is made to an take into account port.)
ii. Transport Defines the type of connection establish between hosts and how acknowledgements are sent.
iii. Internet Defines the protocols used for addressing and routing the data packets.
iv. net Interface Defines how the host connects to the network.

2. Which layer of the TCP/IP model processes requests from hosts to make sure a connection is made to the appropriate port?
i. Application Layer

3. What are well cognise ports?
i. Also known as reserve ports, which are ports 1 1023 that are reserved by ICANN (Internet Corporation for Assigned name and Numbers).

Port Number Assignments
Port Numbers Description
1 - 1023 The well known ports
1024 49,151 Registered ports
49,152 65,535 Private Ports

4. Identify the port verse for the following applications.
a. Telnet 23
b. HTTP 80 (Hypertext Transfer Protocol)
c. file transfer protocol 20, 21 (File Transfer Protocol)
d. DNS 53 (Domain Name Server)
e.

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DHCP 67, 68 (Dynamic legions Control Protocol)
Common Applications and Their Port Numbers
Port Number ApplicationDescription
20, 21 FTP - (File Transfer Protocol)
22 SSH - (Secure Shell)
23 Telnet - (Virtual Terminal Connection)
25 SMTP - (Simple Mail Transfer Protocol)
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