Section 1
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What is another name for performance measurements that can be used to monitor the number of transactions processed in a given time period, the number of records accessed, and the volume of online data?
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Date created
Mar 1, 2020
Cards (65)
Section 1
(50 cards)
What is another name for performance measurements that can be used to monitor the number of transactions processed in a given time period, the number of records accessed, and the volume of online data?
metrics
What is the output of the following code? for (var i = 0; i <= 360; i+=60)
i = 0, 60, 120, 180, 240, 360
Identify a method that decreases array by keeping only those items that return a value of true from the callback function.
array.reduce(callback [, thisArg])
A(n) _____ is a named item in a program that stores a data value, such as a number or text string, or an object, such as a part of the web browser or browser window.
variable
_____ is the process of locating and fixing a programming error.
Debugging
Which of the following IT members would likely concentrate on operating system software and utilities to support an operating system?
systems programmer
Identify a compare function that sorts numeric values in descending order.
function descending(a, b) { return b - a; }
Identify a method that repeatedly runs commands at specified time breaks in a function created.
setInterval("command", interval)
Which term best describes a process that makes a system more secure by removing unnecessary accounts, services, and features?
hardening
A(n) _____ is a collection of commands that performs an action or returns a value.
function
Identify a shortcut key on the keyboard to open the debugging tools.
F12
Which type of baseline documents the system at the end of the design phase and identifies any changes since the initial baseline?
allocated baseline
A command block is indicated by its opening and closing square brackets [ ].
False
Which of the following tasks would most likely be completed by a systems review committee:
approval of a maintenance request that has exceeded a predetermined cost level
_____ programming distributes the load to prevent a server from getting overloaded with program-related requests.
Client-side
Parameters are treated as variables within a function.
True
Which element of system security ensures that authorized users have timely and reliable access to necessary information?
availability
Which of the following methods of the Math operator rounds x up to the next highest integer?
Math.ceil(x)
Identify a return value for the expression 5/"A" using JavaScript.
NaN
What is the output of the following code? for(var i = 5; i > 0; i--)
i = 5, 4, 3, 2, 1
Placing a firewall on a proxy server is an example of which of the following risk management tasks?
risk control
What part of system performance management includes monitoring the system for signs of trouble, logging all system failures, diagnosing problems, and applying corrective action?
fault management
The process of tracking system releases is known as which of the following?
version control
A _____ occurs after a script has been successfully loaded with no syntax errors and is being executed by a browser.
run-time error
Which encryption method is considered asymmetric encryption because each user has a pair of keys?
public key encryption
A(n) _____ is a collection of values organized under a single name.
array
The _____ attribute tells a browser to parse the HTML and JavaScript code together, only pausing to process the script before returning to the HTML file.
async
The technique for locating the source of an error is to set up _____, which are locations where the browser will pause the program, allowing the programmer to determine the error at that position.
breakpoints
A(n) _____ is any group of characters enclosed within either double or single quotation marks in JavaScript.
text string
Identify the output of the following code. var x = 8; var y = 6;
96
Which type of maintenance involves changing an operational system to make it more efficient, reliable, or maintainable?
perfective maintenance
Which of the following syntax is used for a function to return a value?
function function_name(parameters){ commands return value;}
The _____ method creates a new array by passing the original array items to the callback function, which returns the equivalent value of the array items.
array.map(callback [, thisArg])
_____ is the programming language for client-side programs.
JavaScript
Which of the following can be referenced only after the browser has finished parsing the page content?
Document objects
To break a text string into several lines, which means that the text string continues on the next line, the _____ character should be used.
backslash
The _____ property should be used only when no markup tags are involved.
textContent
Identify the general structure of a for loop.
for (start; continue; update) { commands }
Server-side and client-side programming are the two main types of web-based programming.
true
A process for controlling changes in system requirements during software development is known as which of the following?
configuration management
Maintenance tasks play an important role in managing systems support. Which type of maintenance includes adding new capabilities and enhancements to current systems?
adaptive maintenance
A process that monitors current activity and performance levels, anticipates future activity, and forecasts the resources needed to provide desired levels of service is known as which of the following?
capacity planning
JavaScript is a procedural language that needs a compiler to translate the code into machine language.
False
An employee tricking a computer into raising his or her account to the administrator level is known as what type of attack?
privilege escalation
JavaScript code is attached to an HTML file using the _____ element.
script
Identify a function that extracts the first numeric value from the text string.
parseFloat(string)
A command that indicates an action for the browser to take should end with a _____.
semicolon
Index values start with 1 so that the initial item in an array has an index value of 1, the second item has an index value of 2, and so on.
False
JavaScript is used as a programming tool for:
creating interactive web forms and animated graphics
What is the output of the following code? var sum = 0; var x = [1, 3, 7, 11]; x.forEach(sumArray); function sumArray(value) { sum += value; }
22
Section 2
(15 cards)