Angular and TypeScript Online Test

Consider the following component, which can be used to model a marker and the ink it writes.

Which statements about the given component are true?

A: The 'marker' parameter of the @Input('marker') declaration does not alter the interface of the component.
B: Component, Input and Output are all required imports for this component.
C: Both marker and ink inputs must be provided when including the MarkerInk component in a template.
D: When included in a components template, the MarkerInk component creates a span containing the interpolated marker's name and a button bound to writeInk().
E: The MarkerInk component can be included in another template using the <MarkerInk> tag.

Review the following Angular components:

What will be rendered to the DOM based on the following markup usage?

Review the following classes that need to act as dependencies in an Angular project:

Service X is provided to SampleComponent as shown here:

Service Y is provided to SampleModule as shown here:

Service Z is provided to AnotherSampleModule as shown here:

Pick the correct statements:

A: Service X is registered with specific ngComponent. Any new instance of that component will have new instance of Service X.
B: Single, shared instance of Service X is created and is injected into any class that asks for it.
C: A new instance of Service Y is created and injected into any component that asks for it in SampleModule.
D: Service Y is registered with specific ngModule and the same instance of Service Y is available to all components of SampleModule instead of creating one for every component in the SampleModule.
E: A new instance of Service Z is created and injected into any class that asks for it.
F: Angular creates a single, shared instance of Service Z and injects that into any class that asks for it.

What does the following TypeScript code print?

We wrote the following TypeScript function to work as global print function. The function needs to handle string input, an array of strings as input or null as an input. In case of string and array of strings, it needs to print them to console. For null input, the code should not print anything.

The function is throwing an error when it is called with null - globalConsole(null). This is happening because typeof null is ‘object’ in JavaScript. Here are two modifications of the code to handle this case:

Pick the correct statements:

A: In the case of null input, globalConsole1 won’t produce any compiler errors like globalConsole
B: In the case of null input, globalConsole2 won’t produce any compiler errors like globalConsole
C: globalConsole1 will differ from globalConsole for an empty string
D: globalConsole2 will differ from globalConsole for an empty string

Consider the following TypeScript code: 

Which of the following statements are correct:

A: The typescript compiler confirms that toUpperCase exists on the a instance.
B: The typescript compiler states that the toUpperCase function does not exist on the b instance.
C: The typescript compiler confirms that the toUpperCase function exists on the b instance.
D: RectangleType is an array where the type of a fixed number of elements is known.
E: Variables r, g, b are immutable.
F: r, g, b would compile to same type signature

Consider the following shorthand CSS example:

background: #f7f7f7 url(jolie.jpg) no-repeat scroll 0px 0px;

Which of the following show the individual background properties represented by the shorthand:

Our intern is writing a colorful blog post, and has written the following code. What colors will the sentences be?

A: Sentence 1 will be gray, Sentence 2 will be pink.
B: Both sentences will be gray.
C: Sentence 1 will be pink, Sentence 2 will be gray.
D: Both sentences will be pink.
E: The code does not make sense; will throw an error.

In the following HTML, what will be the color of link with class "mark"

Consider the following HTML and CSS:

Which additional CSS rule(s) will render the following image? Choose ALL that apply.

A:
div{
  flex-direction : column;
  align-items : center;
}

B:
div{
  flex-direction : row;
  align-items: center;
}

C:
div{
  flex-direction: column;
  justify-content: center;
}

D:
div{
  flex-direction: row;
  justify-content: center;
}

We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount.

For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition.

⚠️⚠️⚠️ Note:
- The first line of the input is the length of the array. The second line contains all the elements of the array.
- The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function.
- You need to "print" the final result (not return it) to pass the test cases.

For the example discussed above, the input will be:
5
20 70 -40 30 -10

Your code needs to print the following to the standard output:
20 70 30 -40 -10

A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. 

Example:

Input:
WWMMWWCCC

Expected Output: 
4W3C2M

Explanation: 
‘W’ has the highest count, then ‘C’, then ‘M’. 

⚠️⚠️⚠️ Note:
- The input is already parsed and passed to a function.
- You need to "print" the final result (not return it) to pass the test cases.
- If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’.
- If any of them have the same count, the output should follow this order - M, W, C.