Answer:
The answer to this question is given below in the explanation section.
Explanation:
The value stored by a variable can be changed after it is assigned(true).
The value of a variable can be changed after it is assigned, for example:
int a=10;
and we can change the value of variable a in letter program such as:
a=15;
Variables are a name for a spot in the computer's memory (true).
it is true, because the variables value stored in the computer's memory and we can access theses values by their name (variable name). so Variables are a name for a spot in the computer's memory.
Variable names can be words: such as temperature or height (true).
Yes, the variable name can be words such as height, width, temperature etc.
The value stored by a variable cannot be changed after it is assigned (false).
It is noted that the value stored by a variable can be changed after it is assigned. However, it is noted that is some programming language, you can't change the value of static variable.
Answer:
b) A separate part of the program that performs a specific task.
Explanation:
A subroutine is a portion of the program that can be invoked to perform a specific task. Typically, it performs that task and returns execution control to the point immediately following its invocation. It may or may not maintain "history" or "state", and it may or may not throw exceptions.
A well-behaved subroutine will only operate on data passed to it, will not maintain any internal history or state, and will have only one exit.
Answer:
C. Ethernet over multi mode fiber .
Explanation:
Given that the distance to be covered is 1 km. Multi-mode optic fiber is best suited for short distances of up to 2 km and can withstand harsh environments with less signal attenuation. Single mode fiber is best suited long distance of up to 200 km or more and is expensive as compared to multi-mode fiber Ethernet over twisted pair is best for indoor use and can only cover very short distances. Although UTP and STP are relatively cheap they cannot withstand harsh environments without great signal loss.
The PHP code is given below:
<h3>PHP code</h3>
if(isset($_REQUEST['login_btn'])){
$email = filter_var(strtolower($_REQUEST['email']),FILTER_SANITIZE_EMAIL); //strtolower changes email to all lower case
$password = strip_tags($_REQUEST['password']);
The remaining code is in the file attached.
Read more about PHP here:
brainly.com/question/27750672
#SPJ1
Answer:
CD Writer or DVD Writer
Explanation:
The DVD Writer/CD Writer is a multipurpose rewriteable drive that can read audio, data, and video files and can record, or write, in both CD and DVD formats. This DVD Writer/CD Writer drive enables you to: Create custom audio, data, and video files that can be recorded onto CDs or DVDs. Store large amounts of data.
