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IT > Chapter one > Flashcards

Chapter one Flashcards

1
Q

Server

A

Provides information such as emails and web pages to the other hosts on network

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2
Q

Advantage of peer to peer network

A

Easy to set up Its cheaper Transfer files and share printers

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3
Q

Disadvantage of peer to peer network

A

Not secure. Not scalable. The devices can act as server and client -slows performance No administration

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4
Q

Role of client

A

A client is computor host which requests and displays the information from the server

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5
Q

Define Fixed computing

A

You go to device

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6
Q

Define Internet of things

A

Age of devices

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7
Q

Define Internet of everything

A

People,data,things

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8
Q

Define peer to peer network

A

2 directly connected computers use wired/ wireless connection

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9
Q

Define Peer to peer file sharing

A

Share files with others without downloading or storing it from central server

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10
Q

Define Hosts and hosts device

A

Hosts- can send or receive messages on network can connect to multiply servers same time. Host device - source or destination of message transmitted over network and connects one host to another and uses IP address decide message goes

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11
Q

Define Network infrastructure and what they vary on

A

Supports the network and makes it stable Such as Devices ,media, servers. Network structures vary on size of area covered, no of users connected, and no and types of services available

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12
Q

What does Intermediary devices do

A

Interconnect end devices provides connectivity allows data flow across network Regenerates & transmits data signals Maintains information+chooses pathway Informs other device for error and communication failure

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13
Q

Eg of intermediary devices

A

Network access- switches, wireless Internet working- routers Security- firewall

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14
Q

3 types media to interconnect devices

A

Copper Fibre optic cable - rely on infrared/visible e.g glass, plastic. Wireless transmission - electromagnetic waves

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15
Q

Choose network depends on

A

Depends on environment if can be installed and distance can successfully carry signal

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16
Q

Network interface card

A

NIC or LAN connects to network at PC or host device

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17
Q

Physical port

A

Connector on network device so media is connected to host/ networking device

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18
Q

Interface

A

Specialised port on internetworking device and connects individual networks ( port on router are network interface which interconnects devices )

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19
Q

Define Physical topology

A

Identify the physical location of intermediary devices, configured parts, And cable installation

20
Q

Logical topology

A

Identify the IP addressing, ports, device

21
Q

Difference between LAN and WAN

A

LAN- connected by WAN and gives access to other users and end devices in small area such as schools , home WAN- wide area and gives access to other networks it is connected by service providers and Internet service providers

22
Q

Difference between WLAN And SAN

A

WLAN- Interconnects users and end points in small area SAN- supports file servers and give data storage, retrieved and replicate and uses high bandwidth and fibre channel

23
Q

Intranet and extranet

A

Intranet- private connection of LAN and WAN only organisation access it. Extranet- secure and safe access for individuals but require company data

24
Q

DSL

A

Separates the DSL signal from the telephone and give Ethernet connection to host computor/ LAN Always connected to Internet, uses special modem and high bandwidth Depend on quality phone line and distance from company office

25
Q

Dial up telephone

A

Uses any phone line and connects to ISP to access phone No . Uses any modem and its inexpensive low bandwidth and used for mobile travelling not for large data

26
Q

Satellite

A

No access to DSL or cellular

27
Q

Dedicated leased line

A

Connection service from service provider to customer premise and its reserved circuit which separate the office for private data and voice it’s rented monthly cost

28
Q

Metro Ethernet

A

Gives customer over copper or fibre connection. fibre connection gives faster speed

29
Q

Fault tolerance

A

Limits impact failure so less are affected and quicker recovery if occurred has multiple pathways

30
Q

Scalability

A

Expand rapidly to support new users and application no affect on performance delivered such as WAN

31
Q

Redundant connection

A

Allow alternative routes for device or link fails

32
Q

Time sensitive communication and non time sensitive

A

Telephone or video disruption Non time sensitive - decreased priority for web pages or email

33
Q

High importance organisation and undesirable communication

A

Increased priority for business transaction data. Undesirable - decreased priority or block unwanted activity

34
Q

Network security and information security

A

Physical secure of device gives network connectivity and prevents unauthorised access to management software Information - protects information inside packets transmitted over network and information stored on network attached to device

35
Q

Ensuring confediently and ensuring availability

A

Only authorised people devices access data strong system Availability - reliable acces to data services for authorised users end antivirus

36
Q

Cloud computing

A

Allows you to store files and back up entire hard disk drive on servers and photo edit

37
Q

WISP

A

An ISP which connects subscribers to designated acces point or hot spot using similar technology found in WLAN it’s found where DSL not available

38
Q

Powerline networking

A

Home networking uses electrical wiring and connects to LAN if WAP not available or cannot reach device it saves cost installing cables and electrical bills

39
Q

Virtualisation

A

Set of files and programmes running on physical system such as OS, storage device,hardware It reduces cost

40
Q

Maintaining communication integrity

A

Data cannot be changed from source to destination only if information is corrupted

41
Q

Data interception theft

A

Capture private information

42
Q

Identity theft

A

Steal login credits of user to access private information

43
Q

Example of intermediary devices

A

Wireless router , firewall appliance , router , LAN switch they only receive data

44
Q

End devices

A

IP phone, laptops , printer , computor and will generate and receive data

45
Q

Network architecture

A

Ensures connection of any device across network

46
Q

Converged network

A

How much data you can put in Ip phone, video , voice , data

IT (5 decks)

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