FSL Software Technologies Desktop Support Engineer Interview Questions and Answers

The HashMap class is used to represent key-value pairs in Java.

• HashMap is a part of the Java Collections Framework.

• It allows null values and only one null key.

• It provides constant-time performance for basic operations like get and put.

• Example: HashMap<String, Integer> map = new HashMap<>();

Abstraction is the process of simplifying complex systems by focusing on essential details and hiding unnecessary complexities.

• Abstraction allows us to create models or representations of real-world objects or systems in software.

• It helps in managing complexity by breaking down a system into smaller, more manageable parts.

• Abstraction provides a level of indirection, allowing changes to be made in one part of the system...read more

try-catch is used in Java to handle exceptions and prevent program crashes.

• try-catch blocks are used to catch and handle exceptions that may occur during program execution.

• It allows the program to gracefully handle errors and prevent the program from crashing.

• The try block contains the code that may throw an exception, and the catch block handles the exception.

• Multiple catch blocks can be used to handle different types...read more

The statement to use for selecting based on integer inputs is the 'switch' statement.

• The 'switch' statement allows for multiple cases to be evaluated based on the value of an integer input.

• Each case represents a possible value of the input, and the corresponding code block is executed if the value matches.

• The 'switch' statement also provides a 'default' case which is executed if none of the cases match the input value.

• ...read more

IMAP and POP3 are email protocols used for retrieving emails from a mail server.

• IMAP stands for Internet Message Access Protocol and allows users to access and manage their emails on a remote server.

• POP3 stands for Post Office Protocol version 3 and downloads emails from a mail server to a local device.

• IMAP allows for multiple devices to access and sync emails, while POP3 only allows for one device to download emails.

• I...read more

Outlook is a personal information manager developed by Microsoft.

• It is used for email communication, managing contacts, scheduling appointments, and organizing tasks.

• It integrates with other Microsoft Office applications such as Word, Excel, and PowerPoint.

• It allows users to create and manage multiple email accounts and folders.

• It has features such as email filtering, automatic replies, and calendar sharing.

• It can be a...read more

Safe mode is a diagnostic mode in which a computer's operating system starts with only basic functions.

• Safe mode is used to troubleshoot and fix issues with the operating system or software.

• In safe mode, only essential drivers and services are loaded, which can help identify and resolve problems.

• Safe mode can be accessed by pressing a key during startup, such as F8 for Windows.

• In safe mode, the screen resolution may be...read more

PST files are created to store Outlook data locally on a computer.

• PST files allow users to access their Outlook data even when not connected to the internet.

• They can be used to backup important emails, contacts, and calendar events.

• PST files can also be used to transfer Outlook data from one computer to another.

• They have a maximum size limit of 50GB in Outlook 2010 and later versions.

• PST files can be password protected

TCP and UDP are protocols used for communication between devices on a network.

• TCP stands for Transmission Control Protocol and is a connection-oriented protocol used for reliable data transfer.

• UDP stands for User Datagram Protocol and is a connectionless protocol used for fast data transfer.

• TCP is used for applications that require reliable data transfer, such as email and file transfer.

• UDP is used for applications tha...read more

To install an operating system, you need to create a bootable media and follow the installation wizard.

• Create a bootable media (USB, DVD, etc.) with the operating system image

• Insert the bootable media into the computer and restart it

• Follow the installation wizard and select the desired options (language, partition, etc.)

• Wait for the installation to complete and restart the computer

HCL is a global IT services company providing software engineering and consulting services.

• HCL is a multinational company headquartered in India.

• They offer a wide range of IT services including software development, testing, and maintenance.

• HCL has a strong presence in various industries such as healthcare, finance, and manufacturing.

• They have partnerships with leading technology companies like Microsoft, IBM, and Orac...read more