WorksheetsUnit 2 Fundamentals of CS
Total questions: 36
Worksheet time: 26mins
Name
Class
Date
1.
What is NAS?
a)
network audio system
b)
network attached storage
c)
network access server
d)
All of these.
2.
What is RAID?
a)
Risks Assumptions Issues and Decisions
b)
Required Analysis of Image Data
c)
Redundant Array of Independent Disks
d)
Research in Attacks Intrusions and Defenses
3.
Which RAID variant is very fast but if one disk fails the system breaks?
a)
RAID 0
b)
RAID 5
c)
RAID 3
d)
None of these.
4.
Which RAID variant is great for fault tolerance, but takes 2GB of space to store 1GB of data as it creates a mirror drive of the original as it saves?
a)
RAID 5
b)
RAID 0
c)
RAID 1
d)
None of these.
5.
Which RAID variant stripes data across drives and has a dedicated parity drive to rebuild the system should a data drive fail?
a)
RAID 0
b)
RAID 5
c)
RAID 3
d)
RAID 1
6.
Which RAID variant is fast, economical and fault tolerant? (Any disk can be swapped and rebuilt automatically if it fails, but if another goes whilst being rebuilt, then the system will break.)
a)
RAID 3
b)
RAID 0
c)
RAID 1
d)
RAID 5
7.
Advantages of a NAS are that it offers...
a)
shared mass storage; backup
b)
fault tolerance
c)
manageable on-site 'cloud storage'
d)
All of the above.
8.
A ________________________ is a memory buffer with the disk system or part of RAM which ideally holds data likely to be needed next (i.e. next block of data, frequently used data, or data to be written back to disk) to greatly speed up data transfer.
a)
NAS
b)
disk cache
c)
RAM
d)
solid state drive
9.
The __________ is the central core of the operating system. Its job is to control and manage all the system hardware, software and the running of tasks on the system.
a)
operating system
b)
colonel
c)
kernal
d)
All of these
10.
Which operating system was used on early computers where a task had to be shut down before another could be run?
a)
single-user single-tasking
b)
single-user multi-tasking
c)
multi-user multi-tasking
d)
real time
11.
Which operating system is on most PCs and devices running Windows, OSX, IOS and Android which allows one user to have (i.e.) a spreadsheet running whilst watching a video on the same processor?
a)
single user multi tasking
b)
single user single tasking
c)
real time
d)
multi user multi tasking
12.
Which operating system uses large systems such as those used by the Met Office run OS like Unix and MVS and share processing power amongst a number of users?
a)
multi user single tasking
b)
single user single tasking
c)
multi user multi tasking
d)
real time
13.
What is NOS?
a)
Network Operating System
b)
Network Operating System
c)
Nitrous Oxide System
d)
Nitrous Oxide System
14.
The job of the NOS is to manage resource sharing and scheduling and security for a network by:
a)
managing log on security so each client will log on to the network and the level of access allowed is determined by the NOS; managing network access (LAN, WAN).
b)
sharing I/O resources such as printers, scanners, etc. using queues and buffers
c)
managing storage by presenting network storage as normal volumes
d)
All of these.
15.
________________ are super fast memory on board the CPU used to manage the fetch, decode, execute cycle.
a)
Registers
b)
HDD
c)
RAM
d)
None of these.
16.
The system bus is the transport highway for the system. It is a group of wires holding the address bus, the control bus, and the data bus.
a)
True
b)
False
17.
The __________ bus holds address of memory (unidirectional from CPU to memory).
a)
control
b)
data
c)
address
d)
None of these.
18.
The ____________ bus holds current control signal.
a)
data
b)
control
c)
address
d)
All of these.
19.
The __________ bus holds data being transferred.
a)
address
b)
control
c)
data
d)
control panel
20.
How many wires are there in a 32 bit address bus?
a)
64
b)
32
c)
30
d)
24
21.
How many different colours can be represented by 24 bit colour?
a)
2^24
b)
16777216
c)
Both of these.
d)
None of these.
22.
A __________ is used for storing requests that need to be handled as a last in first out structure.
a)
stack
b)
queue
c)
list
d)
array
23.
A ___________ is a list of jobs waiting to be processed, a first in first out structure.
a)
array
b)
stack
c)
queue
d)
list
24.
A ____________ is a flexible collection of items, and grows and shrinks as required. It has a first item, next items, and a last item. It can be added to or removed from lists.
a)
queue
b)
list
c)
array
d)
stack
25.
An __________ is an indexed (numbered normally) sequence of items of the same type and usually fixed in size.
a)
array
b)
stack
c)
list
d)
queue
26.
What transmission sends data over a number of lines at once. It is very fast but suffers more from noise and it is difficult to synchronise over longer distances so it typically only used over very short distances.
a)
parallel
b)
serial
c)
synchronous
d)
asynchronous
27.
What transmission only requires, in theory, one transmission line? The data is sent over 1 bit at a time.
a)
parallel
b)
serial
c)
sychronous
d)
asynchronous
28.
For ______________ transmission the speed of transmission is synchronised with a clock signal on a separate wire. Almost all parallel communication is this and can be very fast.
a)
synchronous
b)
serial
c)
parallel
d)
asynchronous
29.
____________________ is the first part of a communication between two devices.
a)
Handshaking
b)
Communication speed
c)
Communications channels
d)
None of these.
30.
Handshaking is the process by which two communication devices agree the protocols they will use to communicate....
a)
speed they can both work at (bps); synchronous or asynchronous
b)
half duplex or full duplex; data coding
c)
error handling; compression
d)
All of these.
31.
____________________ is the speed at which data is transmitted in bps.
a)
bit rate
b)
baud
c)
bandwidth
d)
bps
32.
______________ is the number of times a signal changes per second -- often intermixed with bps but not quite the same.
a)
bps
b)
bit rate
c)
baud
d)
All of these.
33.
_________________ is the maximum possible bit rate of the medium -- quoted by broadband sellers when average bps can be good deal lower.
a)
bps
b)
baud
c)
bandwidth
d)
All of these.
34.
_______________________________ communication is more flexile as it only needs to be synched when transmitting. Each word includes a start bit to signal the start, and an end bit to signal the end of the word, and parity if that has been agreed.
a)
parallel
b)
synchronous
c)
asynchronous
d)
serial
35.
Packets are sent in order, but are received in any order.
a)
True
b)
False
36.
A _______________________ is the unit of data transmitted in a packet-switched network.
a)
virtual circuit
b)
network packet
c)
protocol
d)
None of these.
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