week 1

Question 1

what are the 2 types of network environments

Answer 1

peer to peer

client/server network

Question 2

what is a peer to peer network

Answer 2

• -> no dedicated servers
• -> any device can be configured to be accessible from other devices
• -> few devices/network devices

Question 3

what is a client server network

Answer 3

• > dedicated servers
• > End devices are the clients taking care of the preprocessing and interfacing
• > more devices/network nodes

Question 4

what is a personal area network

Answer 4

interconnection of it devices within a range of an individual person, typically 10 meters

Question 5

whhat is local area network

Answer 5

localized to a building\, group of buildings or a. campus

typical speed is 100Mbps to 1Gps

usually owned by the implementer

Question 6

what is the metropolitan area network

Answer 6

• > spans an area wider than the lan
• > links several lans in a metropolitan area such as a city
• > usually the telephone company, cable providers or other suppliers provide this service

Question 7

what is the wide area network

Answer 7

• -> coverage can span from across a city to the entire globe
• -> communications carriers retain ownership of the line facilities

Question 8

what is the internet

Answer 8

• -> interconnected networks around the world

- -> not owned by anyone

Question 9

what are traditional separate network s

Answer 9

-> each network with its own rules

Question 10

what is the converging network

Answer 10

-> capable of delivering video, voice and data over the same network infrastructure

Question 11

what are the benefits of a converged network

Answer 11

• > just one network to manage
• > only one wired infrastructure simplifies cabling
• > lower implementation and management costs

Question 12

what are the 4 characteristics of a reliable network

Answer 12

• -> fault tolerance
• -> scalability
• -> quality of service
• -> security

Question 13

what is a fault tolerant network

Answer 13

limits the number of affected devices during a failure

built for quick recovery

depends on having multiple paths between source and destination of a message

Question 14

having multiple paths to a destination is known as _____________

Answer 14

redudancy

Question 15

how do networks provide redundancy

Answer 15

implementing a packet switchiing network

Question 16

what is scalability

Answer 16

networks can continue to be expanded upon to support new users and applications

without disposing previously invested network architecture

Question 17

what is quality of service

Answer 17

• -> classifying data traffic on their network

- -> a combination of communication characteristics and relative importance is used to do this

Question 18

examples of priority decisions

Answer 18

• > time sensitive communication
• > non time sensitive communication
• > high importance to organization
• > undesirable communication

Question 19

what are the 2 network security concerns that organizations haveinfroma

Answer 19

• -> network infrastructure security

- -> information security

Question 20

what is network infrastructure security

Answer 20

physicaly secure the network devices and prevent unauthorised access

Question 21

what is information security

Answer 21

• -> prevent unauthorised disclosure
• -> prevent theft of information
• -> prevent unauthorised modification of information
• -> prevent denial of service

Question 22

what is tier 1 isp

Answer 22

providce national and international coverage

Question 23

what is tier 2 isp

Answer 23

these are often smaller and provide regional service

usually pay tier 1 isp for their service

Question 24

what are tier 3 isp

Answer 24

local providers of the service directly to the end users

usually connected to tier 2 isps and pay them for internet access