Answer / ravin vasani

Hello,

Firewall

There are four types of Firewall:-

1. Application-level Firewalls
2. Network-Level Firewalls
3. Circuit-Level Firewalls
4. Stateful Multi-level Firewalls

Router

There are three types of router:-

1. Access layer router:- Which is used for Small offices and
corporates.

2. Distribution layer router:- Which is used for ISP's like
sift tata.

3 Core layer router:- Which is used for Backbone ISP's like
vsnl.

Switches

There are four types of Switches:-

1. Unmanageable Switches
2. Manageable Switches
3. Smart (or intelligent) Switches
4. Enterprise Managed (or fully managed) switches

Servers

1. Hosting Server

1. Shared Server
2. Virtual Server

2. Managed Dedicated Server

1. Cluster/Grid
2. Cloud

3. Application Server

1. Web Servers
2. Application Servers
3. Specialized Servers: File, Printer and Database Servers
4. Media Servers
5. Mail (Exchange) Servers
6. Trends in Server Type Configuration and Performance
7. Green and Energy Efficient Servers
8. Blade Servers
9. Mobile Rack Servers
10. Efficient Cloud Servers

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