CSG International Technical Support Engineer Interview Questions and Answers

A SQL join query combines rows from two or more tables based on a related column between them.

• Use keywords like INNER JOIN, LEFT JOIN, RIGHT JOIN, or FULL JOIN to specify the type of join

• Specify the columns to join on using ON keyword

• Include the table names and column names in the query

Telnet is a network protocol used to access and manage devices remotely over a network.

• Telnet allows users to connect to a remote device or server using a command-line interface.

• It is commonly used for troubleshooting network issues, configuring devices, and accessing remote servers.

• Telnet operates on port 23 and transmits data in plain text, making it less secure compared to SSH.

• Example: telnet 192.168.1.1 23

VPNs are Virtual Private Networks that allow users to securely access a private network over a public network.

• VPNs encrypt data to ensure privacy and security

• They can be used to access region-restricted websites or bypass censorship

• Common VPN protocols include OpenVPN, L2TP/IPsec, and IKEv2

Technical troubleshooting involves identifying, isolating, and resolving technical issues to ensure systems are functioning properly.

• Identify the problem by gathering information from the user or system logs

• Isolate the issue by testing different components or configurations

• Resolve the problem by applying solutions based on the root cause

• Document the troubleshooting process and solution for future reference

A left join query combines rows from two tables based on a related column, including all rows from the left table.

• Use the LEFT JOIN keyword in your query

• Specify the columns you want to select from both tables

• Specify the join condition using ON clause

• Example: SELECT * FROM table1 LEFT JOIN table2 ON table1.id = table2.id

Some common commands for technical support engineers include ping, ipconfig, and tracert.

• Ping: Used to test the reachability of a host on an IP network.

• Ipconfig: Displays all current TCP/IP network configuration values.

• Tracert: Shows the route that packets take to reach a specified destination.

Non-object oriented languages do not support the concept of objects and classes.

• C

• COBOL

• Fortran

• Pascal

Scope refers to the visibility and accessibility of variables in a program. Logical operators are used to perform logical operations in code.

• Scope in programming refers to where in the code a variable can be accessed. It can be global, local, or block scope.

• To solve an error in the code, first identify the error message or behavior causing the issue. Then, debug the code by checking for syntax errors, logical errors, o...read more

To get data in a table using js, you can use DOM manipulation methods like getElementById or querySelector. Other ways to print output include console.log and innerHTML. A block in js is a set of statements enclosed in curly braces.

• Use getElementById or querySelector to get data in a table using js

• Other ways to print output include console.log and innerHTML

• A block in js is a set of statements enclosed in curly braces,

Seeking new challenges and growth opportunities in a different environment.

• Looking for new challenges and opportunities for growth

• Interested in gaining experience in a different industry or technology

• Seeking a better work-life balance or company culture

• Wanting to work with a different team or leadership style

When you click google.com, you are directed to the Google search engine homepage.

• Redirects to Google search engine homepage

• Allows you to search for information

• Access to various Google services like Gmail, Maps, and Drive

An update query in SQL is used to modify existing records in a database.

• Use the UPDATE keyword followed by the table name

• Set the column(s) to be updated using SET

• Specify the new values for the columns

• Add a WHERE clause to specify which records to update