Netlink ICT Interview Questions and Answers

NAT stands for Network Address Translation. It is a process used in routers to modify network address information in packet headers.

• NAT allows multiple devices on a local network to share a single public IP address.

• There are three types of NAT: Static NAT, Dynamic NAT, and PAT (Port Address Translation).

• NAT works by translating private IP addresses to public IP addresses and vice versa.

• For example, when a device on a l...read more

A public IP is a unique address provided by an Internet Service Provider (ISP) to identify a device on the internet.

• Public IPs are used to communicate with devices over the internet

• They are assigned by ISPs and are globally unique

• Public IPs can be static (unchanging) or dynamic (changing)

NAT stands for Network Address Translation, a process used to modify network address information in packet headers while in transit.

• NAT allows multiple devices on a local network to share a single public IP address

• Types of NAT include Static NAT, Dynamic NAT, and PAT (Port Address Translation)

• NAT helps conserve public IP addresses and adds a layer of security by hiding internal IP addresses

• Example: A home router using ...read more

Port forwarding is a technique used to redirect network traffic from one port to another.

• Port forwarding allows incoming traffic on a specific port to be redirected to a different port on a different IP address.

• It is commonly used to access services on a private network from the internet.

• For example, port 80 on a public IP address can be forwarded to port 8080 on a private server for web traffic.

• Port forwarding is ofte...read more

Bandwidth refers to the maximum amount of data that can be transmitted over a network connection in a given amount of time.

• Bandwidth is typically measured in bits per second (bps), kilobits per second (kbps), or megabits per second (mbps).

• It determines how fast data can be uploaded or downloaded on a network.

• Higher bandwidth allows for faster data transfer speeds, while lower bandwidth results in slower speeds.

• Bandwidt...read more

FTTH stands for Fiber to the Home, a technology that delivers high-speed internet through fiber optic cables directly to residential homes.

• FTTH technology uses fiber optic cables to provide high-speed internet access directly to homes.

• It offers faster and more reliable internet connections compared to traditional DSL or cable internet.

• FTTH allows for symmetrical upload and download speeds, making it ideal for activitie...read more

Protocols are rules or standards that define how data is transmitted over a network.

• Protocols define the format, timing, sequencing, and error checking of data transmission.

• Examples include TCP/IP, HTTP, FTP, and SMTP.

• Different protocols serve different purposes, such as communication, file transfer, or email.