Computer network security

NETWORK A NETWORK B S0/2 S0/2 S1/0 S1/0 NETWORK C FIGURE 1 Split Horizon rule for R1 and R3 in FIGURE 1 R1 should not advertise the route to Network B and Network C back to R2. if there is no split Horizon and the link between R2 and R3 goes down. R1 will keep informing R2 about an alternative route to Network B (thru R2) and…

1. Goal The main purpose of this lab is to introduce us to the RLES vCloud system, begin setting up a network with a router VM and a main Redhat VM, and configure some baseline features for the continuation of our work in future labs. This included configuring DNS forwarding and NTP on the PFSense router VM, and configuring a wiki on the redhat VM alongside monitoring software such as Zabbix or Opsview. When configuring the router, all was fairly straightforward and without any major…

Heidi Roizen, a Stanford graduate, had spent most of her time in her career building networks, which includes many powerful business leaders in the technology sector. Over the years, she had mastered the skill of blending her professional and personal networking. After several transitions in her career, she had joined at Softbank as a part time venture capitalist. However, after four months at her job, she realized that she had to devote 80% of her time to the company. She had wondered what…

Code-division multiple access (CDMA) Discussion of CDMA Code-division multiple access (CDMA) is a multiple access method used by different types of radio communication technologies. Direct-sequence spread spectrum signals uses CDMA which allow more than one user to share a channel. CDMA is a form of multiplexing which allows many signals to occupy a transmission channel and optimizing the use of available bandwidth. Therefore, the receiver separates the signals from the users by cross…

metaphor, which uses the image of a wheel with a core component (the hub) and many sub-components (the spokes). Together, the hub and spokes form a whole that can progress forward as one unit. The hub-and-spoke distribution paradigm (or model or network) is a system of connections arranged like a chariot wheel, in which all traffic moves along spokes connected to the hub at the center. The model is commonly used in industry, in particular in transport, telecommunications and freight, as well as…

Fox, Mem. (2008). Ten Little Fingers and Ten Little Toes. Boston, Massachusetts: HMH Books This book is intended for infants. It says that a baby was born far away and another was born in town. Another baby was born the day after and another baby was sick with a cold. But “as everyone knows” all of the babies have ten fingers and ten toes. The pictures in the book are of babies from different countries. The main point of this book is to tell babies that regardless of where you’re from or what…

Text Data Computers represent information using bits. A bit string is a sequence of zero or more bits. This information is encoded by the sender and will be transmitted. The receiver then decodes the information. Data sent may be corrupted along the way because noise may interfere every time an information is transmitted to any channel. A channel is the physical medium through which information is transmitted. Examples of channels include telephone lines, internet cables, fiber optic lines,…

To achieve this goal, the information must be protected. Which meant that information must be protected against loss. They went with fate sharing because it took information and gathered it at the end point of the network? Which is using the service of the network. Fate sharing has two main advantages. The first one is that it protects against any number of intermediate failures. The second, Fate sharing is much easier to engineer than…

Internet architecture is basically a huge network of thousands of networks communicating using a common protocol. The Internet sends a transmission to a host computer that sends it on to another computer that is connected to the host computers network. If the receiving computer is not connected to the host computers network, the host computer sends it on to another computer that can then send it to the receiving computer. It is not unusual for the message to pass through several routers before…

Question 1 1.1)T.C.P(transmittion control protocol)-It is the language the computer uses to acess the internet. It is made up of protocalls which are made to establish a network of networks and provide a host with access to the internet. 1.2)I.P(Internet Protocol)-It is the way or protocol of how data is sent from one computer to another computer on the internet. 1.3)Physical Layer-the Physical layer is the interface between the medium and the device.It is made to transfer raw bits over a…