How do you think DNS is important for the Internet operation? What happen if DNS of your company/network, your provider or root DNS failures? What solutions to secure DNS operation do you know?

How do you think DNS is important for the Internet operation? What happen if DNS of your company/network, your provider or root DNS failures? What solutions to secure DNS operation do you know?

Total Average Response Time, Average Access Delay calculation Calculation

There is an institutional network connected to the internet by a 1 Mbps link. The institutional network is a very high-speed LAN (let 10 Mbps or more). Suppose that the average object size is 800,000 bits and that the average request rate from the institution’s browsers to the original server is 1 request per second. Also suppose that the amount of time it takes from when the router on the Internet side of the access link forwards an HTTP request until it receives the response is two second on average. Model the total average response time as the sum of the average access delay (that is the delay from Internet router to institution router), and the average internet delay, use ?/(1-?â), where... click for more

Top-level media types and sub-types

Clearly study RFC 2045 and RFC 2046 and name the various top-level media types and sub-types defined in it.

Windows 2003 Infrastructure

(a) Discuss the benefits of the DHCP server and its relation to the Active Directory Domain. (b) Discuss the benefits of WINS server. (c) Discuss installation issues and installation parameters for each server.

Windows 2003 Infrastructure

In a windows 2003 server network discuss several devices such as: repeaters, routers, hubs, and gateways. Where do these devices fit in the OSI reference model?