Junior Network Administrator Interview Questions and Answers

DSCP stands for Differentiated Services Code Point, a field in the IP header used for quality of service (QoS) in networking.

• DSCP is used to prioritize network traffic based on different levels of service.

• It is a 6-bit value in the IP header that determines the class of service for a packet.

• Higher DSCP values indicate higher priority for the packet.

• Examples of DSCP values include EF (Expedited Forwarding) for real-time traffic like VoIP and CS1 (Class Selector 1) for best-eff...read more

Firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

• Firewalls can prevent unauthorized access to a network or computer system

• They can block malicious traffic from entering the network

• Firewalls can be hardware-based or software-based

• Examples of firewalls include Cisco ASA, Palo Alto Networks, and Windows Firewall