Q1.Ethernet has become the standard for LAN communications. Give a brief overview of structure of an Ethernet frame.
Ethernet and Wi-Fi are the most commonly used technologies to set up Local Area Networks today. It operates by using Carrier Sense Multiple Access Detection (CSMA/CD) to control media access. (Study CCNA, 2016)
The structure of an Ethernet Frame is as follows:
The Ethernet Frame Structure (Anon., 2013)
• Preamble: This field is responsible for harmonizing bits between the sending and receiving system. It consists usually of 7 bytes.
• Start Frame Delimiter (SFD): is used as a space breaker that signifies and that the next byte marks the beginning of the destination Mac Address field. Together with the Preamble…
diagram illustrates a Local Area Network implemented using an Ethernet connection on a bus topology model. It is a LAN because there is no indication of considerable distance between the computers or departments. It is in Bus topology as since the computers connect to the network by connecting to the network cable. This as opposed to a star network topology setup.
Next to each network component is an Internet Protocol (IP) address. Each IP consists of four number whose value can range from 0 to…
a WAN network is an ISP (Internet Service Provider) (Ocens, 2012). This WAN connection is T1 that connects to the T1 Demarcation Router in the computer room; this terminates the T1 line and provides an Ethernet Connection to the Main Router as well as a T1 connection to the WAN. The main router creates LAN connectivity and connects to the PIX Firewall and the Ethernet Switch; the firewall controls access to the public internet through the main router’s connection to the WAN. The LAN connection…
This specifies the general interface between the network layer (IP etc.) and the Data Link layer (Ethernet, Token Ring etc.) It’s the standard for the upper Data Link layer sublayer, also known as the Logical Link Control layer. It’s responsible for flow and error control. The Data Link layer wants to send some data over the network, 802.2 LLC helps make this possible.
b. 802.3 – Ethernet
802.3 is the standard which Ethernet operates by. The original 802.3 standard is 10mbps. Commonly, Ethernet…
the student lobby. Network devices should be able to be secured and maintained with ease. The network devices should fit the needs of 524 potential hosts.
Proposed Network Devices
Switches in the closets and server rooms should be used over hubs. One 48 port switch is used for each classroom closet and server room. The computer lab uses a 72 port switch because of the number of hosts connected to it. Patch panels are also used for each closet and server room. More specifically, (2) 24 patch…
Technology Framework Design
In this section, we combine the user domain needs described in Part 1 of this proposal, the physical framework requirements described in Part 2, and the technology selections described in Part 3 to create the final Digital Edge Manufacturing network infrastructure proposal.
Choosing the Cabling Used in the Network
We considered infrastructure costs, speed, and reliability for cabling and adaptors. Our network employed hybrid type of network sine we use Ethernet cable,…
a Layer 2 protocol.
d. Leased lines are Layer 7 standards.
10. Which of the following statements is true when comparing the OSI and the TCP/IP model as defined in RFC 1122?
a. Two layer names match.
b. The lower four layers of TCP/IP define the same kinds of functions as the matching layer numbers from OSI.
c. The TCP/IP five-layer model is old and has been replaced by the seven-layer OSI model.
d. The TCP/IP application layer defines functions that match closely to only…
it’s transmitted through copper which dwindles speeds; currently it is Fibre to the box then copper cable so you don’t get full fibre speeds.
What is LAN?
A Local Area Network or (LAN) allows a group of computers to associate with one another on the same network, such as; school’s, homes and offices. When on the same network, file sharing is quick and reliable because it’s dealing directly with another computer on that network. If many computers where on the same network it can also share…
gateway where the exterior close network is interrupted. Terminal are affixed to this gateway through point-to-point connections. In this action, the gateway behaves as a core switch. The simplest figures is when all data are digital and encapsulated into the equal protocol. For example, the gateway can be an Ethernet switch or an IP router. now, in residential zones, the best applied cabling manner is Twisted Pair Cable with RJ45 connector.
Home networks can conduct either…
In order for a computer to operate on a network, there is a range of different components that are required. They are the bridge, router, DSL modem, switch, network interface card and Hub.
A bridge is a hardware and software devices designed for bridging applications. Bridge start on the OSI Model Data Link Layer. Their function is to detect an error and control the flow on the physical link. They look for the MAC addresses for Ethernet and Token Ring to determine whether or not to forward or…