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Cards in this deck (10)
- 1Lan and WanA local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.By contrast, a wide area network (WAN) not only covers a larger geographic distance, but also generally involves leased telecommunication circuits.
- 2Client-serverA client-server network involves multiple clients, or workstations, connecting to at least one central server. Most data and applications are installed on the server. When clients need access to these resources, they access them from the server. Servers often have private user directories as well as multiple public directories. Client-server networks tend to have faster access speeds because of the large number of clients they are designed to support. The clients are allowed to function as workstations without sharing any resources. It is easier to upgrade software applications and files because they are held on one single computer. System-wide services can be provided through the server software. Security is enhanced on a client server network because the security is handled by the server.
- 3Peer-to-PeerPeer-to-peer networks involve two or more computers pooling individual resources such as disk drives, DVD players and printers. These shared resources are available to every computer in the network. Each computer acts as both the client and the server, communicating directly with the other computers. On a peer-to-peer network, for example, a printer on one computer can be used by any other computer on the network. These networks are inexpensive to set up. All you need is a way to connect them, like an Ethernet cable or a Wi-Fi router.
- 4Network securityA network security threat is an effort to obtain illegal admission to your organization's network, to take your data without your knowledge, or execute other malicious pursuits. Your network security is at risk or vulnerable if or when there is a weakness or vulnerability within your computer network.
- 5Network topologyNetwork topology is the way a network is arranged, including the physical or logical description of how links and nodes are set up to relate to each other. There are numerous ways a network can be arranged, all with different pros and cons, and some are more useful in certain circumstances than others
- 6Logic errors, syntax errors and data typesA logic error (or logical error) is a mistake in a program's source code that results in incorrect or unexpected behavior. It is a type of runtime error that may simply produce the wrong output or may cause a program to crash while running.
Many different types of programming mistakes can cause logic errors. For example, assigning a value to the wrong variable may cause a series of unexpected program errors. Multiplying two numbers instead of adding them together may also produce unwanted results. Even small typos that do not produce syntax errors may cause logic errors. In the PHP code example below, the if statement may cause a logic error since the single equal sign (=) should be a double equal sign (==).In PHP, "==" means "is equal to," while "=" means "becomes." Therefore, the incorrect if statement always returns TRUE, since assigning 1 to the variable $i returns a TRUE value. In the correct code, the if statement only returns TRUE if $i is equal to 1. However, since the syntax of the incorrect code is acceptable, it will not produce a syntax error and the code will compile suc - 7Binary conversion to hexHexadecimal to binary (X2B) is a conversion process involving the two aforementioned number systems. ... In other words, it is about finding the correct combination from binary place values of 8, 4, 2, 1 that equals the decimal representation of the hex value. For example the hex value A or 10 in decimal is 1010.
- 8Factors that affect the performance of a computerThe speed of the CPU. The speed of the CPU is also known as the clock speed of the CPU. ...
The size of the RAM (Random Access Memory) ...
The speed of the hard disk. ...
Hard disk space. ...
Multiple applications running on the computer. ...
Type of graphic card. ...
Defragmenting files. - 9Count-controlled interationCount-controlled iteration repeatedly executes a section of code a fixed number of predetermined times. It uses the statements for and next to determine what code is repeatedly executed and how many times.
- 10Writing an algorithm in pseudocode (using output, input, selection and calculations)1.. If student's grade is greater than or equal to 60
Print "passed"
else
Print "failed"
2. Set total to zero
Set grade counter to one
While grade counter is less than or equal to ten
Input the next grade
Add the grade into the total
Set the class average to the total divided by ten
Print the class average.
3.
Initialize total to zero
Initialize counter to zero
Input the first grade
while the user has not as yet entered the sentinel
add this grade into the running total
add one to the grade counter
input the next grade (possibly the sentinel)
if the counter is not equal to zero
set the average to the total divided by the counter
print the average
else
print 'no grades were entered'
4.
initialize passes to zero
initialize failures to zero
initialize student to one
while student counter is less than or equal to ten
input the next exam result
if the student passed
add one to passes
else
add one to failures
add one to student counter
print the number of passes
print the number of failures
if eight or more students passed
print "raise tuition"
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- 10 CS1 Flashcards on Untitled, created by Jose Pavel Moriera on 17/11/2020.
- Created by
- Jose Pavel Moriera · Nov 2020
- Updated
- Nov 17, 2020
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