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Computer Science GCSE OCR J277 > 1.3.1 Computing Networks, Connections and Protocols > Flashcards

1.3.1 Computing Networks, Connections and Protocols Flashcards

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1
Q

What is bandwidth?

A
  • Data transferred within a defined time period
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2
Q

What is latency?

A
  • Delay when data is sent
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3
Q

What is range?

A
  • Maximum distance data can be sent
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4
Q

What is a routing protocol?

A
  • Rules to find best routes
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5
Q

What is transmission rate?

A
  • Speed data travels
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6
Q

What is a routing cost?

A
  • Determine best route
  • For network traffic
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7
Q

What affects network performance?

A
  • Bandwidth
  • Latency
  • Range
  • Number of devices
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8
Q

What is a DNS?

A
  • Domain Name System
  • A collection of servers
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9
Q

What is packet switching?

A
  • Files broke down
  • Rebuilt at destination
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10
Q

What is an IP address?

A
  • String of numbers
  • Locate devices
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11
Q

What is a web browser?

A
  • Software to browse WWW
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12
Q

What is a URL?

A
  • Uniform resource locator
  • Website address
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13
Q

What is a centralised network?

A
  • Data at one location
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14
Q

What is a distributed network?

A
  • Data at multiple locations
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15
Q

What is hosting?

A
  • A server connected to client
  • Providing a service
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16
Q

If you host a web server, what are you responsible for?

A
  • Security
  • Back ups
  • Tech support
  • Analytics
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17
Q

What is SaaS?

A
  • Software as a service
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18
Q

What does SaaS do?

A
  • Software accessible across devices
  • Hosted on remote servers
19
Q

What are the advantages of SaaS?

A
  • Auto back ups
  • Auto updates
  • Auto save
  • Across devices
20
Q

What are the disadvantages of SaaS?

A
  • Subscription
  • Internet access
  • Less data control
21
Q

What is ethernet?

A
  • Wired network
  • Copper cables
22
Q

What is WiFi?

A
  • Transmission through radiowaves
23
Q

What is HTTP/S?

A
  • Hypertext transfer protocol / secure
  • Identify, request and send web pages
24
Q

What is FTP?

A
  • File transfer protocol
  • Uploading and downloading files
25
Q

What is POP?

A
  • Post office protocol
  • Protocol receives email
  • Delivers email to address
  • Deletes email
26
Q

What is IMAP?

A
  • Internet message access protocol
  • Protocol receives email
  • Delivers email to address
  • Saves copy of email
27
Q

What is SMTP?

A
  • Simple message transfer protocol
  • Sends email to email server
28
Q

What is the TCP model?

A
  • Transmission control protocol
  • Application layer
  • Transport layer
  • Internet layer
  • Link layer
29
Q

What does the application layer do?

A
  • Prepares data to be sent
  • HTTP/S
  • FTP
  • POP
  • SMTP
30
Q

What does the transfer layer do?

A
  • Data into segments
  • Port number ( data knows where to go )
  • TCP
  • UDP
31
Q

What does the internet layer do?

A
  • Segments into IP packets
  • IP address
32
Q

What does the link layer do?

A
  • Transfer IP packets error free
  • Establish connections between client and server
  • Ethernet
  • Fibre optic
33
Q

What is data encapsulation?

A
  • Packaging data
34
Q

What is data decapsulation?

A
  • Unpackaging data
35
Q

What is the OSI model?

A
  • Seven layer model
  • Demonstrates how data is transferred
36
Q

What is the presentation layer?

A
  • Application layer
  • Correct file format
37
Q

What is the session layer?

A
  • Application layer
  • Establishes a connection
38
Q

What is the physical layer?

A
  • Link
  • How data is transmitted
39
Q

What is a compiler?

A
  • Translates entire code at once
  • Stored for later use
40
Q

What is an interpreter?

A
  • Translates line by line
  • Retranslated every execution
41
Q

What is an assembler?

A
  • Translates assembly language to machine code
42
Q

What is source code?

A
  • High level programming language
43
Q

What is object code?

A
  • Machine code

Computer Science GCSE OCR J277 (9 decks)

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