Newtok Technologies Interview Questions and Answers

DSCP (Differentiated Services Code Point) is a network protocol used to prioritize and manage network traffic based on its importance.

• DSCP is a field in the IP header that assigns a value to packets to indicate their priority

• It allows network administrators to control and prioritize traffic flow

• DSCP values range from 0 to 63, with higher values indicating higher priority

• Different applications or services can be assigne...read more

DNS stands for Domain Name System. It is a system that translates domain names into IP addresses.

• DNS is like a phone book for the internet

• It helps to locate websites by translating domain names into IP addresses

• DNS servers store information about domain names and their corresponding IP addresses

• DNS resolution can be recursive or iterative

• Examples of DNS servers include Google DNS and OpenDNS

LAN stands for Local Area Network, a computer network that connects devices within a limited area such as a home, office, or building.

• LAN is a type of network that connects devices within a limited area

• It is commonly used in homes, offices, and buildings

• LAN can be wired or wireless

• Devices on a LAN can communicate with each other directly

• Examples of LAN technologies include Ethernet and Wi-Fi

WLN stands for Wireless Local Network, a type of network that allows devices to connect wirelessly within a limited area.

• WLN is also known as WLAN (Wireless Local Area Network)

• It uses radio waves to transmit data between devices

• Common examples of WLN include Wi-Fi networks in homes, offices, and public places

IP stands for Internet Protocol. It is a set of rules that governs the format of data packets sent over a network.

• IP is a fundamental protocol in computer networking.

• It provides the addressing scheme used to identify devices on a network.

• IP packets contain both the source and destination IP addresses.

• IPv4 and IPv6 are the two main versions of IP.

• IP is responsible for routing packets across different networks.

PAL stands for Phase Alternating Line, a color encoding system used in analog television systems.

• PAL is used in countries like Europe, Australia, and parts of Asia.

• PAL has a higher resolution and better color reproduction than NTSC.

• PAL uses 50 Hz as the frequency for the alternating current, while NTSC uses 60 Hz.

• PAL signals are not compatible with NTSC signals, and vice versa.

Topologies refer to the physical or logical layout of a network, determining how devices are connected and communicate with each other.

• Topologies can be classified into physical and logical topologies.

• Physical topologies describe the physical arrangement of devices and cables.

• Common physical topologies include bus, star, ring, and mesh.

• Logical topologies describe how data flows in a network, regardless of the physical ...read more