Category Archives: Cisco

Cisco -Username Privilege Levels

Username Privilege Levels Finally, a username can have a privilege level associated with it. This is useful when you want specific users to default to higher privileges. The username privilege com- mand is used to set the privilege level for a user: Router#config terminal Enter configuration commands, one per line.   End with CNTL/Z. Router(config)#username […]

OSI Model

Physical layer : This layer deals with the physical connection between two points. This is the lowest layer, whose primary role is communicating raw bit streams. This layer is also responsible for activating, maintaining, and deactivating these bit-stream communications. Data-link layer : This layer deals with actually transferring data between two points. In contrast with […]

Network engineer/architect interview questions

Network engineer/architect interview questions —————————————————————— Explain how traceroute, ping, and tcpdump work and what they are used for? Describe a case where you have used these tools to troubleshoot. What is the last major networking problem you troubleshot and solved on your own in the last year? What LAN analyzer tools are you familiar with […]

Cisco VPN Interview Questions ?

VPN interview questions: 1.What are the different types of VPN? 2.What requirements should a VPN fulfill? 3.How many ways are there to implement VPN architecture? 4.What are the different ways authentication mechanism in VPN? 5.Can you explain the basic of encryption in VPN? 6.what’s the difference between Symmetric and Asymmetric cryptosystem? 7.what are the different […]