Reliable Networks

Question 1

What is network architecture?

Answer 1

refers to the technologies that support the infrastructure and the programmed services and rules, or protocols, that move data across the network.

Question 2

there are four basic characteristics that network architects must address to meet user expectations. What are they?

Answer 2

• Fault Tolerance
• Scalability
• Quality of Service (QoS)
• Security

Question 3

What is fault tolerant network?

Answer 3

• limits the number of affected devices during a failure.
  
  • built to allow quick recovery when such a failure occurs.

Question 4

What is redundancy

Answer 4

These networks depend on multiple paths between the source and destination of a message. If one path fails, the messages are instantly sent over a different link. Having multiple paths to a destination is known as redundancy.

Question 5

What is Packet switching ? What does it do?

Answer 5

is one way that reliable networks provide redundancy
splits traffic into packets that are routed over a shared network

Question 6

A single message, such as an email or a video stream, is broken into multiple message blocks, called ?

Answer 6

packets

Question 7

What does a packet carry threw the network?

Answer 7

Each packet has the necessary addressing information of the source and destination of the message.

Question 8

What is an example of a packet that changes the paths to the same desination?

Answer 8

router

Question 9

What is scalable network?

Answer 9

expands quickly to support new users and applications. It does this without degrading the performance of services that are being accessed by existing users

Question 10

What does scalable network do for a small office?

Answer 10

Let you add a new network

Question 11

What is Quality of Service (QoS)? Give an example

Answer 11

an increasing requirement of networks today.
one user is requesting a web page, and another is on a phone call. With a QoS policy in place, the router can manage the flow of data and voice traffic, giving priority to voice communications if the network experiences congestion. The focus of QoS is to prioritize time-sensitive traffic. The type of traffic, not the content of the traffic, is what is important.