Unit 1 Assignment 1: What´s Network Based Realization?

In the Network Design Paper I will explain how the University has recently leased a building in Adelphi, Maryland. The measurements of the University is 240 feet long, 95 feet wide and 30 feet tall and broken down to two different floors. This University will be used for education purposes of course, the facility will be made of six instructional labs, seven offices, library, five classrooms, a student lobby and a computer lab. There will be a server room on each floor. The purpose of this paper is to explain the design of the networks in this building. The student accessed computers will be set up on a separate network than the network that they staff will be using.

A hierarchical system of servers and services specifically designed to translate IP addresses into domain names (forward lookups) as well as the reverse (reverse lookups) is called:

The /etc/resolv.conf file is the resolver configuration file. It provides access to DNS for Internet address resolution. The nameserver line indicates which systems the local system should query to resolve hostnames into IP

When you type in a web address, e.g.www.google.com. DNS associates with the domain name, translates into IP address (for example 192.168.154.70 is the IP for google.com) and directs your Internet connection to the correct website.

DNS is the service that translates from domain name to the matching IP address. The roles of the name servers in this process are:

Virtual Machine Security - Full Virtualization and Para Virtualization are two kinds of virtualization in a cloud computing paradigm. In full virtualization, entire hardware architecture is replicated virtually. However, in para virtualization, an operating system is modified so that it can be run concurrently with other operating systems. VMM Instance Isolation ensures that different instances running on the same physical machine are isolated from each other. However, current VMMs do not offer perfect isolation. Many bugs have been found in all popular VMMs that allow escaping from VM (Virtual machine). Vulnerabilities have been found in all virtualization software, which can be exploited by malicious users to bypass certain security restrictions or/and gain escalated privileges. ation software running on or being developed for cloud computing platforms presents different security challenges. It is depending on the delivery model of that particular platform. Flexibility, openness and public availability of cloud infrastructure are threats for application security. The existing vulnerabilities like Presence of trap doors, overflow problems, poor quality code etc. are threats for various attacks. Multi-tenant environment of cloud platforms, the lack of direct control over the environment, and access to data by the cloud platform vendor; are the key issues for using a cloud application. Preserving integrity of applications being executed in remote machines is an open

How would you define a network? What is bandwidth? What is a NIC? List three types of media used for network connections.

UNIT 9 P3- EXPLAIN the key components required for client workstations to connect to a network and access network resources

There are 3 security features about Hamachi: (1) Encrypted communications：Secure communications using AES 256-bit encryption, over public and private networks; (2) Centralized access controls: Control network access and usage, including password management, network authentication, network locking, and ongoing network membership; (3) Network / client configuration management：Configure default settings for individual networks and clients, with support for full, restricted and minimal client interface modes

The user has the control to set up the network and it easier that client server. The user does not need special knowledge of setting up the network.

This protocol use Dijkstra algorithm. It maintains a complex data base, also called as link state database, which contains full information about the remote routers and the exact network topology. The goal from this protocol is to provide similar information about network connection to each router, so each router can calculate the best route to each network this is happen when each router generates information about itself and pass these information to other routers in the network so each router make a copy of this information without changing it.

Each layer has a specific function and the layers work together to allow an application to send data over a computer network without really specifying the exact protocols and/or physical wiring within each layer. In line with the figure above, when the first CEO sends an email message to the second CEO, email ‘application worker’ firstly prompts the first CEO to enter a message and specify that the receiver is the second CEO. The application worker then creates the necessary data package with message contents and the destination email address and send s this to a ‘transport worker’. The transport worker provides transport integrity. The transport worker may establish a connection with the receiver (second CEO); monitor the overall

As we all know virtualization is the requirement of future. We have evolved from the age of traditional environment to virtual environment.We have grown accustomed to almost all things virtual from virtual memory to virtual networks to virtual storage.The most widely leveraged benefit of virtualization technology is server consolidation, enabling one server to take on the workloads of multiple servers. For example, by consolidating a branch office’s print server, fax server, exchange server, and web server on a single windows server, businesses reduce the costs of hardware, maintenance, and staffing.

These virtual machines have a separate operating system, memory, processor and other resources which is the shared by the resources of the

3 Not being a technical person, I am heavily relying on our text and other related literature. The fundamental to network addressing and numbering in an environment, despite the size or location, is following a structured model. A network designer should carefully develop, plan, manage, and document the network layer addresses. Since no accurate mechanisms exist for assigning network or subnet numbers dynamically, the network layer address numbers need to be well-planned, administered, and documented. There are benefits to observing this approach. The network will be easily managed, maintained, troubleshooting narrowed and isolated to the location, and the network will be scalable (Oppenheimer, p. 169, 2011).