Healthcare Computer Network Architecture - Coursework Example

of the of the 10 February Healthcare Computer Network Architecture Answer Internet Protocol (IP) is a numeric address that configured on each computing device that wishes to communicate with other devices on a computer network. Likewise, this address demonstrates the address of a specific device on the network. For example, a computer that is configured on the network will possess an IP address: 192.168.1.2. However, for establishing connectivity, subnet mask, gateway and other relevant protocols contribute for successful data transmission.

Likewise, a version 4 IP address comprises of five classes i.e. Class A, Class B, Class, C , Class D and Class E. Subnet demonstrates the class of an IP address. Moreover, the gateway defines the address via the possibility of relaying traffic to other network is possible. For instance, if a user is accessing a website, gateway will send the request from the local user network to the network of the website. Answer 2 & 3: As mentioned earlier, there are total five classes in version 4 IP address.

Details of IP classes are illustrated below (Blank 284): Class Starting IP address Last IP address Subnet Mask A 0.0.0.0 127.255.255.255 255.0.0.0 B 128.0.0.0 191.255.255.255 255.255.0.0 C 192.0.0.0 223.255.255.255 255.255.255.0 D 224.0.0.0 239.255.255.255 255.255.255.255 E 240.0.0.0 255.255.255.255 255.255.255.255 As the table defines all the classes for version 4 IP address, we can see that the class A has total 3 octets available for assigning IP addresses. It is obvious that 32 bits are available that are defined by 4 octets in an IP address.

For instance, 192.168.5.1 having a subnet mask of 255.255.255.0 has 3 octets filled and only one octet available for defining hosts. As shown in the Fig 1, IP address 140.251.183.184 with a subnet of 255.255.255.0 is a class C network. However, there is a difference in a local IP address and Global IP address. Network administrators define local IP address by breaking down global IP address in to local IP address by sub netting. Therefore, the communication is carried out by an IP address provided by an Internet Service Provider (ISP) and it can be of any class.

Answer 4: ‘Tracert’ known as trace route command is executed via command prompt for checking the delays and number of hops, time to live (TTL) for a particular request of Internet Protocol from one destination to other. Answer 5: MAC stands for Media Access Control and it controls manages the physical transmission control on the local area network (LAN). Likewise, MAC address is embedded in to an Ethernet card with a unique six bytes serial number and it operated on the data link layer of the OSI model ("MAC Layer." 1). Answer 6: Wireless access points are only used for providing access on long distances and where no routing is required.

For instance, a router provides functionality of relaying traffic from one network to another, whereas, wireless access point do not route traffic but provides a wide wireless spectrum for connectivity. Moreover, wireless router also has a functionality of connecting wired devices and may prove to be expensive as compared to a wireless access point. Answer 7, 8, & 9: T1 and T3 connections are expensive for consideration as compared to high speed cost effective Digital Subscriber Line. However, the bandwidth requirements are dependent on the amount of data that needs to be exchanged from the remote office to the head office.

SONET is an expensive connectivity supporting up to 52Mbps with redundant connectivity. If the bandwidth requirements are in reach, a robust SDSL Symmetric Digital Subscriber Line (SDSL) or ADSL connection can be considered, which can support up to 1 to 9 Mbps (ADSL) and 3.2 Mbps (SDSL). However, for a wireless or wired connection, it again depends on the requirements, as wireless connectivity will be expensive if the range of the remote office is far. Likewise, radio link connectivity can be considered for a far location, again it will be expensive.

The recommended option will be a DSL connection that will utilize Public Switched Telephone Networks (PSTN) to establish connectivity. Answer 10: Cyclic redundancy check is a technique for securing data integrity of data. CRC performs a calculation by utilizing binary representation of data and the results are kept separately from the data being checked. Likewise, existing CRC with the new CRS is verified to ensure high integrity of data ("Cyclic Redundancy Check." 130-130) Answer 11: TCP is a connection oriented protocol that ensures reliable delivery of data along with error correction.

Likewise, if a packet is found corrupted or loss, new packet is requested from the source to replace errors. Whereas, UDP is a connection less protocol that do not ensure reliable deliver and can be used in applications such as FTP, Video streaming, VoIP etc. True and False Answer 12: False Answer 13: True Answer 14: False Answer 15: False Answer 16: True Answer 17: A device that generates radio waves is called a radio transmitter or a transmitter. Answer 18: Data link layer that is identified as layer 3 of the OSI model Transport layer that is identified as layer 4 of the OSI model Answer 19: Manchester coded signaling Answer 20: 127.0.0.

1 Work Cited Blank, Andrew. TCP/IP Foundations . San Francisco, Calif.: Sybex, 2004. Print. "MAC Layer." Computer Desktop Encyclopedia (2011): 1. Print. "Cyclic Redundancy Check." Network Dictionary (2007): 130-. Print.