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IB CS Practice
What is a Protocol?
Define concurrency
IB CS Practice
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1
Define concurrency
when more than two programs share primary and secondary memory
when two programs run on one computer
when two or more processes are executed at the same time
when code uses the internet and local storage at the same time
2
What is a Protocol?
A system within the OSI Presentation layer that checks for mistakes in data
method that creates and transmits small units of data, called packets
set of rules governing the exchange or transmission of data between devices
computer systems that are interconnected and can share resources and data
3
Define MDR
holds the addresses to the instruction, which points to the data required.
Where all the mathematical and logical decisions are made
coordinates all activities in processor and other parts within a computer
holds the data needed for the next instruction to be executed.
4
State the need for low level programming languages
they are easier to maintain in the long run and with working in a team
used to create easy to understand code
used to perform operations directly on hardware
used to give programmers easy to understand abstractions
5
Define Primary Memory
allows a user to store data and programs for as long as desired,
holds the data needed for the next instruction to be executed.
memory that can be accessed relatively quickly by the processor.
RAM only
6
What is a MAC Address?
Modified Account Control address, unique to each piece of hardware
Main Access Control address, unique to each piece of hardware
Middle Account Control address, unique to each piece of hardware
Media Access Control address, unique to each piece of hardware
7
What is a Switch?
A system within the OSI Presentation layer that checks for mistakes in data
will transmit data to the device connected at a specified port
set of rules governing the exchange or transmission of data between devices
a device that forwards data packets between computer networks
8
What is Cache Memory?
Memory levels, each closer to the CPU
Fast Memory
RAM
A memory hierarchy within secondary memory that allows faster processing
9
What is a RFID?
used to transmit data with a small amount of power
a unique address in the hardware
software that connects an application with a network protocol
user for payments over a short distance
10
Define CPU
contains the circuitry needed to interpret and execute program instructions
Where all data is stored and retrieved
Where all the mathematical and logical decisions are made
The Core Processing Unit, performs necessary instructions in a system.
11
What action does the Session Layer perform?
establishes and maintains end-to-end bidirectional flows between endpoints
Defines electrical, optical and connecting details for transmission
handles routing of packets between systems
controls rules for data transmission
12
Define CU
Where all the mathematical and logical decisions are made
coordinates all activities in processor and other parts within a computer
The Core Processing Unit, performs necessary instructions in a system.
holds the addresses to the instruction, which points to the data required.
13
Which of the following is not part of the System Life Cycle?
Implement
Analysis
Test
Present
14
What is a PAN?
private area network
personal area network
printer area network
popular artsy network
15
What action does the Data Link Layer perform?
handles routing of packets between systems
Formats data into frames appropriate for transmission
controls rules of data transmission
Defines electrical, optical and connecting details for transmission
16
Define MAR
The Core Processing Unit, performs necessary instructions in a system.
holds the addresses to the instruction, which points to the data required.
coordinates all activities in processor and other parts within a computer
Where all the mathematical and logical decisions are made
17
What is a VPN?
software used to hide from public networks
a network where all data is private
allows clients that are not within a LAN to connect to it
a connection that can be used only through special cables
18
What is Packet Switching?
A system within the OSI Presentation layer that checks for mistakes in data
Switching between sending packets and sending bytes
Switching between different protocols that use packets
method that creates and transmits small units of data, called packets
19
Which of the following is no part of the Machine Execution Cycle?
Fetch
Code
Execute
Decode
