Presented by: Dr. Sarah Mustafa Eljack
Babiker
Define and explain the different types and
characteristics of a Computer Network
 Identify the various media used in network
topologies
 Explain Ethernet fundamentals and technologies
(including Fast Ethernet and Gigabit Ethernet)
 Explain the OSI and the Internet layering
models
 Create network addressing schemes using
subnetting and all classes of IP addresses
 Compare and contrast the OSI and TCP/IP models

Concepts , benefits and basic component of
computer networks..(1 week )
 The computer networks types and
topologies.(LAN, MAN and WAN, peer to peer
and server based networks) (2 weeks )
 The wire and wireless networks(cable types
and access media)(2 weeks )
 OSI seven layers model .( the physical layer
,data-link layer , network layer , transport
layer , session layer , presentation layer and
application layer) (3 weeks )
 IP address (classes and subnetting) (3 weeks )
 TCP/IP protocol. (1 week )
 networks devices and services . (2 weeks )
 Routing protocols . (1 week )

 Computer
Networks, Andrew S. Tanenbaum,
4th edition, Prentice Hall, 2002.
 Computer Networks: A Systems Approach,
Peterson and Davie, Morgan Kaufmann,
1999..
After completing this course the student should
be able to :
 Define and explain the different types and
characteristics of a Computer Network
 Identify the various media used in network
topologies
 Explain Ethernet fundamentals and technologies
(including Fast Ethernet and Gigabit Ethernet)
 Explain the OSI and the Internet layering
models
 Create network addressing schemes using
subnetting and all classes of IP addresses
 Compare and contrast the OSI and TCP/IP models

The first test
week six
 The second test week ten
 Home works and assignments
 Lab work
 Lab. Exam
 Final exam
week sixteen

10%.
10%.
10%.
10%.
20%.
40%.
 Questions
will be made after each lecture.
 Each student should try to answer the
questions individually.
 Collecting these questions to be a question
bank covering all the subject.
 The final exam might contain questions out
of the bank.
 The
lecture time is the specific time to
discuss any issues related to the subject
 The class room is the place where the
students can ask and discuss any related
topics.
 The office hours are for academic questions
only .
Computer
Networks
COMP326
Lecture 1
Q: Define Computer networks, then discuss the
Computer network benefits?
Sol:
Network is a collection of independent computers connected
together to share resources (such as printers, scanners, files ….).
Network benefits
(A)Resource sharing
Make resources available to anyone on the network. Such as:
 Hardware: like printers, scanners.
 Software: like files, programs.
.
Data
Printe
B. Computation speedup
Distribute computations between network computers.
.
C. Load sharing
Move tasks from highly loaded to lightly loaded computers.
D. Communication
• Video conference.
• E-mail.
• Chatting.
Y
Z
Network Benefits
K
M
• Resource Sharing
C
S Speedup
• Computation
• Load balancing
A
B
D
E
LAN
MAN
F
G
• Communication
J
I
LAN
N
X
WAN
MAN
Thank you
Great prayers for your success