10+ HCLTech Specialist Interview Questions and Answers

DNS stands for Domain Name System. It translates domain names to IP addresses and vice versa.

• DNS is like a phone book for the internet, translating human-readable domain names (like google.com) into IP addresses that computers can understand.

• DNS also helps in load balancing by directing traffic to different servers based on their availability and performance.

• It plays a crucial role in email delivery by translating domain names in email addresses to IP addresses to route email...read more

I am unable to provide the network map of my current company.

• I am not authorized to share the network map of my current company.

• The network map contains sensitive information that cannot be disclosed.

• Sharing the network map could pose a security risk for the company.

DHCP stands for Dynamic Host Configuration Protocol. It is used to automatically assign IP addresses to devices on a network.

• DHCP assigns IP addresses to devices on a network

• It helps in reducing the manual configuration of IP addresses

• DHCP servers can be configured with a range of IP addresses to assign

• DHCP lease time determines how long an IP address is assigned to a device

OSPF is a routing protocol used to exchange routing information between routers in a network. Configuration involves enabling OSPF and defining network areas.

• Enable OSPF on the router interface

• Define OSPF network areas

• Configure OSPF routing process

• Verify OSPF neighbor relationships

Active Directory is a directory service developed by Microsoft for Windows domain networks.

• Centralized database for managing network resources

• Stores information about users, computers, and other network objects

• Allows for authentication and authorization of users

• Enables single sign-on for users across multiple applications and services

Schema is a way to organize and structure data in a database or document.

• Schema defines the structure of data, including the types of data and relationships between data elements.

• It helps ensure data integrity and consistency.

• Examples of schema include database schemas, XML schemas, and JSON schemas.

To patch RHEL 7, use the yum package manager and the 'yum update' command.

• Ensure that the system is registered with Red Hat Network or a local repository

• Run 'yum update' command to update all packages

• Reboot the system to apply the updates

• Use 'yum list updates' to check for available updates

• Use 'yum update ' to update a specific package

AS400 commands are used for managing and interacting with the AS400 system.

• Common AS400 commands include WRKACTJOB (to display active jobs), WRKUSRJOB (to display user jobs), STRSQL (to start SQL command line), DSPJOB (to display job information), etc.

• Commands are used for tasks such as job management, system monitoring, database querying, etc.

• AS400 commands are typically entered through the command line interface of the AS400 system.

LSA stands for Latent Semantic Analysis, a technique used in natural language processing to analyze relationships between a set of documents and the terms they contain.

• LSA is a mathematical technique that analyzes relationships between a set of documents and the terms they contain

• It is used to extract and identify the underlying structure of text data

• LSA is based on the principle that words that are used in similar contexts tend to have similar meanings