TCS Interview Questions and Answers

Authentication mechanisms in technology involve various methods for verifying the identity of users and ensuring secure communication between servers.

• Authentication mechanisms include passwords, biometrics, two-factor authentication, and digital certificates.

• Servers communicate using protocols such as HTTPS, SSL/TLS, SSH, and OAuth.

• Authentication mechanisms work by verifying the credentials provided by the user against stored data or by generating and validating digital signa...read more

Certificates are digital documents used to verify the identity of a website or server in secure communication.

• Certificates are issued by a Certificate Authority (CA) to verify the identity of the website or server.

• TLS (Transport Layer Security) is a protocol that uses certificates to secure communication over the internet.

• Certificates contain information such as the public key of the website/server and the digital signature of the CA.

• When a user connects to a website, the web...read more

Components needed in a home networking system include modem, router, switch, access point, and network cables.

• Modem: connects to the internet service provider and converts the signal for use by the network.

• Router: directs network traffic between devices and manages the IP addresses.

• Switch: connects multiple devices within the network and allows them to communicate with each other.

• Access Point: provides wireless connectivity for devices to connect to the network.

• Network cables...read more

Routers operate at the network layer (Layer 3) of the OSI model.

• Routers forward data packets between networks based on IP addresses

• They make decisions based on routing tables

• Routers are essential for connecting different networks together

Best practices in technology involve staying updated, following security protocols, testing thoroughly, and documenting processes.

• Stay updated on the latest technologies and trends

• Follow security protocols to protect data and systems

• Thoroughly test software and systems before deployment

• Document processes and procedures for future reference

DNS types used in routing include A, AAAA, CNAME, and MX records.

• A record: Maps a domain name to an IPv4 address

• AAAA record: Maps a domain name to an IPv6 address

• CNAME record: Maps an alias domain name to the canonical domain name

• MX record: Specifies the mail servers responsible for receiving email for a domain