...Name: _Aaron Hancock_ Date: _12OCT2014_ ISSC340 Week 1 Assignment (3% of Grade) APUS/Sanford Lesson 1 Review: Overview of Local Area Networks The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. 1. What are the main architectural components of a LAN? (Minimum word count: 60) The main architectural components are 1: The network's physical topography (how the nodes are connected) 2: The access method (how the nodes access the transmission medium) 3: the transmission technique (how information passes through the network) 4: the transmission media (wired or wireless) 5: the use of specific protocols (the language used to communicate between computers) 6: the LAN's inter-connectivity (how the LAN shares with other networks) 2. Describe the function and characteristics of a network operating system (NOS). (Minimum word count: 100) A network operating system (NOS) manages the resources used within the network and enebles select services to select nodes. A NOS consists of two main components: a server component and a client component. The server component is the most complex component that runs on the server. The server component can do many things, to include; manage multiple users, provide access to files and printers, provide internet access, and enforce network security protocols. The client component runs on the client machine and enables the client to participate on the network. A NOS client component...
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...Name: Fabian Calle-Calle Date: 11 Feb 2015 ISSC340 Week 2 Assignment (3% of Grade) Lesson 2 Review: Wide Area Networks The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. 1. What is a T1 circuit? (Word count: 15-25) A T1 circuit is the most common connectivity method in the United States and Japan and it is 24 different channels of voice and data that carries signals at a speed of up to 1.544 mbps 2. A statistical multiplexer provides each user with … (Word count: 15-25) The ability to have a faster connection depending on the transmission trends by switching between channels according to the demand of the network 3. What does a SONET add/drop multiplexer do? (Word count: 15-25) It provides the capability to add or drop part of the transmission payload without the overhead of completely demultiplexing and remultiplexing the entire signal. 4. Describe an ATM cell … (Word count: 15-25) It is a data frame that is always 53 bytes long that serves as the basic unit of ATMs packets switching technology 5. Which technologies provide affordable high-speed connections for home-based networks? (Word count: 15-25) There are three main methods of connecting to the internet that is available for an affordable price. Cable Internet which is the most common, and reliable this method provides a good amount of speed for a reasonable price. DSL connections is the cheapest high speed connection that...
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...Name: ___ ____________ Date: __ 2013_________ ISSC340 Week 2 Assignment (3% of Grade) APUS/ Lesson 2 Review: Wide Area Networks The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. 1. What is a T1 circuit? (Word count: 15-25) ____A T1 circuit is a DS1 WAN technology that is comprised of 24 x 64 kbps data channels and 1 x 8 kbps allotted for signal and network management for a total of 1.544 Mbps. It is versatile because data types can be divided into voice, video, and data channels from one T1. ________________________________________________________________________________________________________________________________________________________ 2. A statistical multiplexer provides each user with … (Word count: 15-25) ____bandwidth based on demand on the circuit as it is available. This is different and more efficient than TDM where each user is slotted a given bandwidth whether it is used or not. __________________________________________________________________________ ______________________________________________________________________________ 3. What does a SONET add/drop multiplexer do? (Word count: 15-25) ____It provides the capability to add or extract part of the data payload without completely demultiplexing or remultiplexing the signal.____________________________ 4. Describe an ATM cell … (Word count: 15-25) ___ATM is a connection-oriented, packet-switching technology that...
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...Name: Charles Buchanan Date: 12/07/2014 ISSC340 Week 5 Assignment (3% of Grade) APUS/Sanford Lesson 5 Review: Networking Models, Traffic and Devices The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. 1. Describe the three modes of communication available on a network. (Minimum word count: 60) Whenever we connect devices there must be away for one device to communicate to another. The three basic modes of operation annoy network are Simplex, Half-Duplex, and Full-Duplex operation. in simplex operation, a network cable or communication channel can only send information in one direction. Half-duplex operations are capable of sending information in both directions between nodes, but only one direction can be utilized at a time. Full-duplex operation is a connection between two devices and is capable of sending information in both directions simultaneously. 2. List the seven layers of the OSI model, including both layer number and name for each. (Minimum word count: 20) The Open Systems Interconnect (OSI) model has seven layers. The application, presentation, session, transport, network, datalink, and physical layers. 3. Describe a protocol data unit (PDU). (Minimum word count: 30) A protocol data unit (PDU) is an open system interconnection term use in telecommunications that refers to a group of information added or removed by a layer of the OSI model...
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...Name: _Terrence Pryor__________________________ Date: 09/06/2014____________________ ISSC340 Week 3 Assignment (3% of Grade) APUS/Kageorgis Lesson 3 Review: Networking and the Internet The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. 1. What is an extranet? (Minimum word count: 30) An intranet that can be partially accessed by authorized outside users, enabling businesses to exchange information over the Internet securely._________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 2. Describe the function of a firewall. (Minimum word count: 70) A firewall is a system designed to prevent unauthorized access to or from a private computer network. They are frequently used to prevent unauthorized Internet users from accessing private networks that are often described as intranets which are connected to the Internet.___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 3. Which tunneling protocols are commonly...
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...ISSC340 Week 3 Assignment (3% of Grade) Lesson 3 Review: Networking and the Internet The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. 1. What is an extranet? (Minimum word count: 30) An extranet is an internal network that allows users to share information without making it public. It is similar to a business library that allows only employees to have view the content. 2. Describe the function of a firewall. (Minimum word count: 70) The function of a firewall is to control the flow of information between the internet and private networks. The function of a firewall within a network is similar to a barrier door or gate. It serves as the first line of defense and assists in preventing network attacks. Another way to think of a firewall would be a security guard or metal detector. As information is passed to and from different networks, the firewall is inspecting and looking out for suspicious content. 3. Which tunneling protocols are commonly used by VPNs? (Minimum word count: 25) The four most commonly used tunneling types for VPN’s are L2TP, IPSec, PPTP, and SSL. L2TP is layer to tunneling protocol and does not provide encryption, IPSec is another an encryption and authentication method that is very time consuming and expensive. PPTP is point to point tunneling and the most supported by VPN. And SSL is secure socket layering and does require software installation. 4. Describe a differential backup...
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...Name: Date: August , 2014 ISSC340 Week 5 Assignment (3% of Grade) Lesson 5 Review: Networking Models, Traffic and Devices The purpose of this activity is to reinforce what you have learned so far about local area networks technologies. 1. Describe the three modes of communication available on a network. (Minimum word count: 60) Simplex Data travels in only one direction, similar to a public address (PA) system. Half-duplex Data travels in two directions, but in only one direction at a time, similar to a walkie-talkie. Traditional shared Ethernet uses half-duplex transmissions. Full-duplex Data travels in two directions simultaneously, similar to a phone conversation. Full-duplex Ethernet (or switched Ethernet) supports full- duplex transmissions in a switched environment. 2. List the seven layers of the OSI model, including both layer number and name for each. (Minimum word count: 20) The OSI/RM consists of the seven layers Application 7, Presentation 6, Session 5, Transport 4, Network3, Data Link 2, and Physical 1. 3. Describe a protocol data unit (PDU). (Minimum word count: 30) The PDU consists of the payload and the header from that layer. The next layer then treats the PDU from the previous layer as the payload, adds its header (creating a new PDU), and transferring it to the next layer. 4. List three practical functions of the OSI model. (Minimum word count: 60) The OSI/RM has three practical functions: It gives developers necessary, universal concepts...
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