Ebook previews

What is gateway in networking

This article understands the concept of gateway in networking. Assume the following two scenarios – 1. A PC with IP address 192.168.1.2 with subnet mask tries to access a PC with IP address 192.168.2.1 with subnet mask 255.255.255.0. 2. A PC with private IP address 192.168.1.2 with

How is a wild card mask interpreted by a router

This tutorial understands how a wild card mask is interpreted by a router. Take an example where a router has a wild card mask of 0.0.0.255, which is associated with an IP address 192.168.1.0. The 0 in the wild card mask implies that when a packet is

NOC engineer interview questions

The following interview questions are recommended for reading before attending a NOC interview Which feature on a firewall can be used for mitigating IP spoofing attacks Access control list can be used for the purpose. Interview question 2 What type of firewall can be used to block

L1 network engineer interview questions

The following questions are recommended for reading for a L1 network engineer interview. These questions are preview from ebook – 250 Networking Interview questions and answers Buy from Amazon Q1 Two PCs are connected to a switch. The IP address of PC1 is 192.168.1.33/27 and the IP

How does routing work

This tutorial explains how routing works with a case study. The content is a sample preview from the book – Routing & Switching Fundamentals Buy from Amazon Take a scenario where two PC’s are connected to a switch. The IP address of PC1 and PC2 is 192.168.1.2

What is the difference between default route and default gateway

This tutorial explains the difference between default route and default gateway. The content is a sample preview from the book – Routing and Switching fundamentals Buy from Amazon A default route is a route entry in a routing table whereas a default gateway is a value, typically

What happens when a URL is typed in a browser

This tutorial explains what happens when a URL is typed in a browser. The content is a preview from the book – 250 Networking Interview questions and answers Buy from Amazon Take a scenario where you are accessing the internet at your home on your laptop.The laptop

What happens when you ping a website

This tutorial explains what happens when you ping a website. The content is a preview from the book – 250 Networking Interview questions and answers Take a scenario, where a user pings the website www.tcpipguru.com from a PC. On the PC screen from where the ping is

What is the difference between tagged and untagged VLAN

This tutorial explains the difference between tagged and untagged vlans. The content is a preview from the book – 250 Networking Interview questions and answers Buy from Amazon Take a scenario where a switch port is a member of untagged vlan 2 and tagged vlan 3 and

Basic networking interview questions

The following are basic networking interview questions, which is a sample from the Ebook – 250 Networking Interview questions and answers —————————————————————————————————————— Buy from Amazon Q1 – On which port do a DNS client and server work. Q2 – How does a FTP server differentiate between two