Computer Network Topology By Team_Initiator (Dept . of Sociology)

A Network Topology is the arrangement with which computer systems or network devices are connected to each other. Topologies may define both physical and logical aspect of the network. Both logical and physical topologies could be same or different in a same network.

A Network Topology is the physical and logical arrangement of nodes and connections in a network.
▶ Physical Topology describes the layout of devices and cables, and Logical Topology describes the way in which data is transmitted within the network- regardless of the physical layout.

1. Dhaka International University Batch: 46 th Semester: 1 st Submi t ted To: Suman Ahmed Saikan Lecturer Department of CSE Dhaka International University Depart m ent of S o ciol o gy Course Name: Introduction to Computer & Information Technology Course No: 0611-1101 Computer Network Topology

2. Team Initiator Mizan Ibne Hossain A f sa n a Ah m ed Monalisa Islam Md. Rahim

3. Outline Introduction Topology Type Bus Topology Ring Topology Star Topology Mesh Topology Tree Topology

4. Introduction ▶ A Network Topology is the physical and logical arrangement of nodes and connections in a network. ▶ Physical Topology describes the layout of devices and cables, and Logical Topology describes the way in which data is transmitted within the network- regardless of the physical layout.

5. Network Topology ▶ Different types of network topologies Bu s top o logy Rin g topol o gy Sta r t o pology T r e e topology Mesh topology

6. Bu s topology ▶ All data transmitted between nodes in the network is transmitted over this common transmission medium and is able to be received by all nodes on the network simultaneously. ▶ A signal containing the address of the intended receiving machine travels from a source machine in both direction to all machines connected to the bus u n til it find s t h e in tend e d r ecipien t .

7. Bu s topology Advantages ▶ On l y o ne w ir e – Less expensive. ▶ S u i t ed f o r t e m p o r a ry ne t w o rk. ▶ N o d e f a i l ures d o es n o t a ff e c t others. Disadvantages ▶ N o t f au l t t o t o l erant ( No redundancy ) ▶ Li m i t ed Cab l e l eng t h. ▶ No security.

8. Rin g topology ▶ A ring topology is a bus t o p o l o g y i n a c l o se d l oo p . ▶ P e e r - t o - peer L A N t o p o l o g y . ▶ T w o c o nne c t i on : o ne t o each o f i t s ne a rest nei g h b o rs . ▶ Unidirectional. ▶ Sending and receiving data takes place the help of a token .

9. Rin g topology Advantages Performance better than Bus topology. Can cause bottleneck due to weak links. A l l n o d es w i t h eq ual a c c ess. Disadvantages U ni d irec t i o n a l . S in g l e p o in t o f f a i l ure w i l l a ff ect t he w h o l e network. I n l o a d – i n p e r f o r m a nce. No s ec u ri t y .

10. Sta r topology ▶ E v e r y node i s c o n nec t ed to a central node called a h ub o r s w i t ch . ▶ Ce n t ra l i zed M a n a g eme n t . ▶ All t raf f i c mu s t p a s s t h r o ugh t h e h ub o r s w it ch .

11. Sta r topology Advantages ▶ E a s y t o d esign an d i m p l emen t . ▶ Centralized administration. ▶ Scalable. Disadvantages ▶ Sing l e p o in t o f f a i l ure a ff e c t s w h o l e ne t w o r k . ▶ B o tt l ene c ks d ue t o o v er l o a d ed switch/Hub. ▶ I ncrea se d c o s t d ue t o s w i t ch / H ub.

12. Mesh topology ▶ Each node is directly connected to every other nodes in the network. ▶ Faul t toleran t an d reliable.

13. Mesh topology Advantage ▶ Fault tolerant. ▶ Reliable. Disadvantage ▶ Issues with broadcasting messages. ▶ Expensive and impractical for large netw o rks.

14. T r e e topolo g y ▶ c o mpu t er n e t w ork i n g, t r e e t o p o l o gy i s a t y p e o f n e t w o rk t o p o l o g y t h a t r e s emb l es a t r e e. Tree t y p o l o g i es are o f t en u s ed t o crea t e l arge networks.

15. T r e e topology Advantages ▶ I t c a n s u p p o r t a l a r g e n u m ber of nodes. ▶ I t c a n b e easi l y expan d e d . ▶ Additionally, tree topologies are highly scalable and can be easi l y recon f igure d . used. Disadvantages ▶ This network is very difficult to configure as c o m p a red t o t h e o t h er n e t w o rk t o p o l o g i es . ▶ The length of a segment is limited & the limit of the segment depends on the type of cabling ▶ Due to the presence of a large number of nodes, the network performance of tree topology b e c o mes a b i t sl o w .

16. Thank you