MCSD MCSD 4 — Questions and Answers
Question 1: Which Azure service is used to run containerized applications using Docker without managing the underlying virtual machines?
- Azure Virtual Machines
- Azure Container Instances (Correct answer)
- Azure Data Factory
- Azure Logic Apps
Correct answer: Azure Container Instances
Azure Container Instances lets you run Docker containers on-demand without provisioning or managing any underlying infrastructure.
Question 2: In C# LINQ, what does the 'Where' extension method return?
- A single element matching the predicate
- A filtered IEnumerable based on a predicate (Correct answer)
- The count of matching elements
- An ordered collection
Correct answer: A filtered IEnumerable based on a predicate
'Where' filters a sequence and returns an IEnumerable<T> containing only elements that satisfy the given predicate.
Question 3: Which HTTP status code indicates that a request was processed successfully and a new resource was created?
- 200 OK
- 204 No Content
- 201 Created (Correct answer)
- 202 Accepted
Correct answer: 201 Created
HTTP 201 Created indicates that the request succeeded and a new resource was created as a result, typically returned from POST requests.
Question 4: In WPF, what mechanism allows a UI element to automatically reflect changes in a data source without manual event handling?
- Code-behind event handlers
- Data binding (Correct answer)
- Static resources
- Control templates
Correct answer: Data binding
Data binding in WPF creates a link between a UI element and a data source, automatically updating the UI when the source changes.
Question 5: Which Azure AD feature allows users to sign in once and gain access to multiple applications without re-entering credentials?
- Multi-Factor Authentication
- Conditional Access
- Single Sign-On (SSO) (Correct answer)
- Role-Based Access Control
Correct answer: Single Sign-On (SSO)
Single Sign-On (SSO) allows users to authenticate once and access multiple integrated applications seamlessly.
Question 6: In ASP.NET Core middleware, what method is called to pass the request to the next component in the pipeline?
- Continue()
- Pass()
- next() (Correct answer)
- Forward()
Correct answer: next()
The 'next' delegate is invoked within middleware to pass the HTTP context to the next middleware component in the request pipeline.
Question 7: Which Git command creates a new branch and immediately switches to it in a single step?
- git branch new-branch
- git merge new-branch
- git checkout -b new-branch (Correct answer)
- git init new-branch
Correct answer: git checkout -b new-branch
'git checkout -b branch-name' creates the specified branch and checks it out in one command.
MCSD MCSD 4
Which Azure service is used to run containerized applications using Docker without managing the underlying virtual machines?