Infosys Consulting System Administrator Interview Questions and Answers

L2 switches operate at the data link layer and make forwarding decisions based on MAC addresses, while L3 switches operate at the network layer and make forwarding decisions based on IP addresses.

• L2 switches operate at the data link layer of the OSI model

• L2 switches make forwarding decisions based on MAC addresses

• L3 switches operate at the network layer of the OSI model

• L3 switches make forwarding decisions based on IP ...read more

Wired LAN is faster than WiFi.

• Wired LAN typically offers faster and more stable connection speeds compared to WiFi.

• WiFi speeds can be affected by interference, distance from the router, and the number of devices connected.

• Examples of wired LAN technologies include Ethernet and Powerline adapters.

If scope are full on DHCP server, you can either expand the scope or delete inactive leases to make room for new ones.

• Expand the scope by increasing the range of IP addresses available for lease

• Delete inactive leases to free up space for new leases

• Check for any misconfigured devices causing IP address conflicts

AD is Active Directory, a directory service developed by Microsoft. ISO layers refer to the OSI model, and TCP/IP is a protocol suite.

• Active Directory is a directory service used to manage resources in a network.

• ISO layers refer to the Open Systems Interconnection model, which is a conceptual model used to describe network communication.

• TCP/IP is a protocol suite used for communication between devices on a network.

• TCP/...read more

I chose Linux because of its stability, security, and flexibility. RPM is a package manager used in Red Hat-based distributions, while Yum is a command-line package management utility.

• I chose Linux because it is an open-source operating system that offers better stability and security compared to other options.

• Linux provides a high level of flexibility, allowing me to customize and optimize the system according to spec...read more

cd stands for change directory. It is a command used in command-line interfaces to navigate between directories.

• cd is used to change the current working directory in a command-line interface

• It is commonly used in operating systems like Unix, Linux, and Windows

• cd followed by a directory name or path changes the current directory to the specified one

• cd .. moves up one level in the directory hierarchy

• cd / takes you to the

L2 switches operate at the data link layer and make forwarding decisions based on MAC addresses, while L3 switches operate at the network layer and make forwarding decisions based on IP addresses.

• L2 switches operate at the data link layer of the OSI model

• L2 switches make forwarding decisions based on MAC addresses

• L3 switches operate at the network layer of the OSI model

• L3 switches make forwarding decisions based on IP ...read more

Wired LAN is faster than WiFi.

• Wired LAN typically offers faster and more stable connection speeds compared to WiFi.

• WiFi speeds can be affected by interference, distance from the router, and the number of devices connected.

• Examples of wired LAN technologies include Ethernet and Powerline adapters.

If scope are full on DHCP server, you can either expand the scope or delete inactive leases to make room for new ones.

• Expand the scope by increasing the range of IP addresses available for lease

• Delete inactive leases to free up space for new leases

• Check for any misconfigured devices causing IP address conflicts