[ DOT NET Core MCQS ]

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[ DOT NET Core MCQS ]

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681. Read Uncommitted Isolation Level में क्या संभव है?

[A] Dirty Read

[B] Deadlock

[C] Indexing

[D] Backup

681. What is possible in Read Uncommitted isolation level?

[A] Dirty Read

[B] Deadlock

[C] Indexing

[D] Backup

सही उत्तर: Dirty Read

व्याख्या: Uncommitted Data पढ़ा जा सकता है।

Correct Answer: Dirty Read

Explanation: Uncommitted data can be read.

682. Read Committed SQL Server का कौन सा Isolation Level है?

[A] Default

[B] Highest

[C] Lowest

[D] Custom

682. Which isolation level is the default in SQL Server?

[A] Read Committed

[B] Highest

[C] Lowest

[D] Custom

सही उत्तर: Default

व्याख्या: यह SQL Server का Default Isolation Level है।

Correct Answer: Read Committed

Explanation: It is SQL Server's default isolation level.

683. Serializable Isolation Level का मुख्य लाभ क्या है?

[A] Highest Data Consistency

[B] Fastest Performance

[C] Lowest Memory Usage

[D] No Locking

683. What is the main benefit of Serializable isolation level?

[A] Highest Data Consistency

[B] Fastest Performance

[C] Lowest Memory Usage

[D] No Locking

सही उत्तर: Highest Data Consistency

व्याख्या: सबसे Strict Isolation प्रदान करती है।

Correct Answer: Highest Data Consistency

Explanation: Provides the strictest isolation.

684. DataReader और DataSet में कौन Connected Architecture उपयोग करता है?

[A] DataReader

[B] DataSet

[C] दोनों

[D] कोई नहीं

684. Which uses connected architecture?

[A] DataReader

[B] DataSet

[C] Both

[D] Neither

सही उत्तर: DataReader

व्याख्या: DataReader Connection Open रहते हुए Data पढ़ता है।

Correct Answer: DataReader

Explanation: Reads data while connection remains open.

685. DataSet और DataReader में कौन Disconnected Architecture उपयोग करता है?

[A] DataSet

[B] DataReader

[C] दोनों

[D] कोई नहीं

685. Which uses disconnected architecture?

[A] DataSet

[B] DataReader

[C] Both

[D] Neither

सही उत्तर: DataSet

व्याख्या: Connection Close होने के बाद भी Data उपलब्ध रहता है।

Correct Answer: DataSet

Explanation: Data remains available after connection closes.

686. Using Statement का उपयोग Database Objects के साथ क्यों किया जाता है?

[A] Automatic Resource Disposal

[B] Faster Queries

[C] Database Backup

[D] Authentication

686. Why is using statement used with database objects?

[A] Automatic Resource Disposal

[B] Faster Queries

[C] Database Backup

[D] Authentication

सही उत्तर: Automatic Resource Disposal

व्याख्या: Connection और Command Objects Automatically Dispose होते हैं।

Correct Answer: Automatic Resource Disposal

Explanation: Automatically disposes connections and commands.

687. Multiple Active Result Sets (MARS) का उपयोग किसलिए होता है?

[A] One Connection पर Multiple Result Sets

[B] Multiple Databases Create करने के लिए

[C] Bulk Insert के लिए

[D] Transactions Disable करने के लिए

687. What is MARS used for?

[A] Multiple Result Sets on One Connection

[B] Create Multiple Databases

[C] Bulk Insert

[D] Disable Transactions

सही उत्तर: One Connection पर Multiple Result Sets

व्याख्या: एक Connection पर कई DataReaders उपयोग करने की सुविधा देता है।

Correct Answer: Multiple Result Sets on One Connection

Explanation: Allows multiple DataReaders on a single connection.

688. UserManager Class का मुख्य उद्देश्य क्या है?

[A] User Management

[B] Database Management

[C] Session Management

[D] Logging

688. What is the main purpose of UserManager?

[A] User Management

[B] Database Management

[C] Session Management

[D] Logging

सही उत्तर: User Management

व्याख्या: Users को Create, Update और Delete करने के लिए।

Correct Answer: User Management

Explanation: Used to create, update and delete users.

689. UserManager.CreateAsync() Method क्या करती है?

[A] New User Create करती है

[B] User Delete करती है

[C] User Login कराती है

[D] User Logout कराती है

689. What does UserManager.CreateAsync() do?

[A] Creates New User

[B] Deletes User

[C] Logs In User

[D] Logs Out User

सही उत्तर: New User Create करती है

व्याख्या: Identity User को Database में Save करती है।

Correct Answer: Creates New User

Explanation: Saves a new identity user to the database.

690. UserManager.FindByEmailAsync() Method का उपयोग किसलिए होता है?

[A] Email द्वारा User Find करने के लिए

[B] Password Change करने के लिए

[C] Role Assign करने के लिए

[D] Claim Add करने के लिए

690. What is UserManager.FindByEmailAsync() used for?

[A] Find User By Email

[B] Change Password

[C] Assign Role

[D] Add Claim

सही उत्तर: Email द्वारा User Find करने के लिए

व्याख्या: Registered Email के आधार पर User खोजती है।

Correct Answer: Find User By Email

Explanation: Finds a user using registered email.