Nt1310 Unit 2 Pest Analysis

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7. Write an equation to find the “Number of people who know” for any 5-minute interval in Scenario B.

as a device in its domain and sends the packet to the host or pushes the packet to the next

This makes sure the data transferred is in the right order, error free and reliable from beginning to end. The Network Layer is the third layer of the model and its function is to interpret the network addresses into physical addresses and figure out how to direct them from the sender to the receiver. The next layer is the Data Link Layer, this is the second layer and it separates the data it receives from the Network layer into specific frames so they can be transmitted by the Physical layer. Frames are packages for moving data, they include the raw data, the sender and receiver’s addresses, as well as error checking and control information. This makes sure the frames are delivered to their destination without any problems. The physical layer is the first layer and the lowest, the protocols at this layer recognize and receive the frames from the Data Link layer. They also monitor data error and set data transmission

2. A disadvantage of the contention approach for LANs is the capacity wasted due to multiple stations attempting to access the channel at the same time. Suppose that time is divided into discrete slots, with each stations attempting to transmit with probability p during each slot. What fraction of slots are wasted due to multiple simultaneous transmission attempts?

d) The information is acquired on the data bus and send it to TDO. (Alghafli, Jones, and Martin. 2012).

28. Pg 173 IP Address. Hosts have logical IP addresses (changeable) TCP/IP is in the network layer. The MAC address is the physical layer. Mac addresses cannot be changed. ARP is used to connect a logical IP with a MAC.

DNS- DNS stands for domain name server and is a network of servers that keep track of Internet Domain Names. Its main job is to authenticate and find domains. It translates IP Addresses into numbers, for example, 172.194.40.143 translates into

The _________ is a term for the device or unit that originates the information transfer.

Recommendation: To recover data packets lost in transit; the data loss caused by a computer/server crash can be prevented using a solid backup plan. Data files can be replicated over a remote server as well as on different computers on a network.

PEST is an acronym used for companies with in the political, economic, social and technological views. PEST allows companies to view and observe certain areas that might have been overlooked. The company I will be discussing the PEST analysis is Target. Target is a large scale company and is constantly changing in the industry. The political views of Target is that they must have an unbreakable bond with China due to majority of its products coming from that country. They must be aware and stray away from any conflicts because it can create a negative affect in the operation of Target. Also the company is altered by taxation, tariffs, cost, and trade restrictions especially when they're trying to broden outside the United States. The economic

The application layer: this layer allows different applications to communicate with each other’s. In order to exchange different data over the network connection, the protocols included in this layer set up the standards such as DNS, HTTP, FTP. The data coded in this layer will be encapsulated to transport layer for further packing.

The second is Class B was designed for medium and large networks; the two main bits in Class B are always 10 which makes up the address. The next 14 bits are used to gather Class B I.Ds and instead they are set a length of 16-bit. The last 16 bits are used for the Host I.D. This allows for 16,384 networks and also 65,534 hosts to the network. Finally Class C which was designed for small networks. The three mains bits in Class C addresses are 110; the next 21 bits are used to gather Class C network I.Ds and Class C has a length of 24. Meaning the last 8 bits are for the Host I.Ds which means that Class C has 2,097,152 networks and 254 hosts.

2.   Mean service time = travel time + repair time = 1 + 1.5 = 2.5 hours

A given layer in the OSI model generally communicates with three other OSI layers: the layer directly above it, the layer directly below it, and its peer layer in other networked computer systems. The data link layer in System A, for example, communicates with the network layer of System A, the physical layer of System A, and the data link layer in System B. The following figure illustrates this example.