Ericsson IMS Engineer Interview Questions and Answers

Different network layers include physical, data link, network, transport, session, presentation, and application layers.

• Physical layer: responsible for transmitting raw bits over a communication channel

• Data link layer: responsible for error-free transfer of data between nodes on a network

• Network layer: responsible for routing data packets between networks

• Transport layer: responsible for reliable data transfer between a...read more

Firewall works on multiple layers of OSI model

• Firewall operates on layers 3 (network layer) and 4 (transport layer) of the OSI model

• It can filter traffic based on IP addresses, ports, protocols, and other criteria

• Firewalls can also perform deep packet inspection to detect and block malicious traffic

• Examples of firewall software include Cisco ASA, pfSense, and Windows Firewall

Device Manager is a Windows utility that displays and manages all hardware devices installed on a computer.

• It allows users to view and configure hardware devices and their drivers

• Users can enable/disable devices, update drivers, and troubleshoot issues

• It is accessed through the Control Panel or by right-clicking on the Computer icon and selecting Properties

• Examples of devices listed in Device Manager include network ad