Network Architecture Flashcards
1
Q
What is computer network architecture ?
A
- Physical and logical design of bewirkt components
- based on how computers and network devices are arranged and how duties are assigned
2
Q
What is a Peer-Peer (P2P) Network?
A
- network architecture where two or more computers link and exchange resources without needing a server
- each device in network is recognized as a peer with functionalities that contribute to network
- each computer functions as both, server and client
- can be physically connected to hub
3
Q
What is Client/Server Architecture ?
A
- multiple (physical or remote) clients request and receive services from a central server = host computer
- central operator is server / clients are devices demanding a resource
- server primary authority that executes all key functions
4
Q
What is a bus Topology?
A
every computer and device on network is linked to sigle cable
- data moved only in one direction
5
Q
What are the advantages of Bus Topology?
A
- Cost effective
- Lowest cable requirements
- Useful for small Networks
- Easy to understand
- Easy to expand by joining two cables together
6
Q
What are the disadvantages of Bus Topology?
A
- If cable fails, while network fails
- If network performance is heavy, network performance decreases
- Cables have limited lengths
7
Q
What is a mesh topology?
A
- Every device connected to another via specific channel
- These Channels are known as links
8
Q
What are the advantages of Mesh Topology?
A
- Robust
- Easy to diagnose problems. Data reliable since transferred through dedicated channels or links
- Provides security and privacy
9
Q
What are the Disadvantages of Mesh Topology?
A
- Installation and Configuration are complicated
- Cable costs high since bulk wiring is required
- Maintenance costs are high
10
Q
What is Star Topology?
A
- all devices connected to hub which acts as repeater for data flow
- hub can be active or passive
11
Q
What are the advantages of Topology?
A
- Fast performance if few nodes and low network traffic
- Can be easily upgraded
- Easy to troubleshoot
- If node fails, rest can still function
12
Q
What are the disadvantages of star topology?
A
- high installation cost
- costly to operate
- if hub fails, whole network fails
- performance dependent on the hub and capacity
13
Q
What is Ring Topology ?
A
- Each device is connected to each other, with last one to first
- employees several repeaters since it’s compromised of many nodes
- usually unidirectional but can be rendered bidirectional by connecting each network node to two connections = Dual ring topology
— two data rings, opposite sides. If one ring fails the other works as backup
14
Q
What are the advantages of ring topology
A
- inexpensive to install and expand
- Transmitting network not affected by high traffic
15
Q
Disadvantages of Ring Topology ?
A
- Troubleshooting is difficult
- Adding it deleting computers disrupts network activity
- Failure of one computer disrupts the entire network
16
Q
What is Tree Topology?
A
- hierarchical Topology
- has root node in which all other nodes are connected to it hierarchically
17
Q
Advantages of Tree Topology
A
- Builds on Bus and Star Topology
- Nodes can be easily expanded
- Easy to manage and maintain
- Allows easy error detection
18
Q
Disadvantages of Tree Topology
A
- Requires heavy cabling
- Costly to implement
- The more nodes, the more difficult to maintain
- If central hub fails, whole network fails
19
Q
Hybrid topology
A
- employs features of two or more topologies
20
Q
Advantages of Hybrid Topology
A
- Reliable, since error detection and troubleshooting is easy
- Effective
- Scalable, so networks can be easily increased
- Flexible
21
Q
Disadvantages of hybrid topology
A
- It’s design can be complex
- Can be costly
