Computer Operating Networks

COMPUTER OPERATING NETWORKS 1. Explain what is meant by a computer network Computer network A computer network means two or more computers that are connected to each other and used for various data. Computer networks are built using a combination of hardware and software. In creating a computer network, there are switches and routers that use protocols and algorithms to exchange information and carry data to the end point as desired. The purpose of creating a computer network is so that the information or data carried by the sender (transmitter) can reach the recipient (receiver) precisely and accurately. Computer networks allow users to communicate with each other easily. Each endpoint or also known as a host on a network has a unique identifier, often an IP address or Media Access Control address which is used to indicate the source and even destination of transmission. Endpoints can include servers, telephones, personal computers, and many types of hardware in a network. Computer networks are created using a combination of cable and wireless technology. Network devices always communicate via cable or even wireless transmission medium. For networks that use cables, you need optical fiber, copper cables, or coaxial cables. Meanwhile, if the wireless network route is included in a computer network that uses wireless data connections to connect to end points, in this case what is meant by end points are cellular radio, broadcast radio, satellite and microwave. Based on the explanation above, it can be concluded that we need to make computers connected to a network so that the information or data carried by the sender (transmitter) can reach the recipient (receiver) precisely and accurately. Computer networks allow users to communicate with each other easily. 2. Explain the difference between multicats and broadcast A. Computer Network A computer network means two or more computers that are connected to each other and used for various data. Computer networks are built using a combination of hardware and software. In creating a computer network, there are switches and routers that use protocols and algorithms to exchange information and carry data to the end point as desired. The purpose of creating a computer network is so that the information or data carried by the sender (transmitter) can reach the recipient (receiver) precisely and accurately. Computer networks allow users to communicate with each other easily. Each endpoint or also known as a host on a network has a unique identifier, often an IP address or Media Access Control address which is used to indicate the source and even destination of transmission. Endpoints can include servers, telephones, personal computers, and many types of hardware in a network. Computer networks are created using a combination of cable and wireless technology. Network devices always communicate via cable or even wireless transmission medium. For networks that use cables, you need optical fiber, copper cables, or coaxial cables. Meanwhile, if the wireless network route is included in a computer network that uses wireless data connections to connect to end points, in this case what is meant by end points are cellular radio, broadcast radio, satellite and microwave. B. Difference between Multicast and Broadcast Multicast and Broadcast are examples of several methods of sending data in computer networks. Broadcast, in personal computer networks, is a type of packet that originates from one point, and has a destination to all other points on the network. Generally, this type of broadcast packet will be sent to declare the 'existence' of a service, or search for a point on the network. Meanwhile, Multicast is a type of packet, originating from one point and aiming at a special address (not a special point), where this special address can be 'listened to' by other points on the network that are 'interested' in listening to it. The meaning of Broadcast is sending data to all hosts on the network within it. Meanwhile, multicast means sending data to all hosts on a predetermined network or on the same frequency. Based on the explanation above, it can be concluded that the difference between multicast and broadcast is that broadcast is the process of sending data to all hosts on the network within it. Meanwhile, multicast means sending data to all hosts on a predetermined network or on the same frequency. 3. Explain the meaning of NIC in computer networks A. Computer Network A computer network means two or more computers that are connected to each other and used for various data. Computer networks are built using a combination of hardware and software. In creating a computer network, there are switches and routers that use protocols and algorithms to exchange information and carry data to the end point as desired. The purpose of creating a computer network is so that the information or data carried by the sender (transmitter) can reach the recipient (receiver) precisely and accurately. Computer networks allow users to communicate with each other easily. Each endpoint or also known as a host on a network has a unique identifier, often an IP address or Media Access Control address which is used to indicate the source and even destination of transmission. Endpoints can include servers, telephones, personal computers, and many types of hardware in a network. Computer networks are created using a combination of cable and wireless technology. Network devices always communicate via cable or even wireless transmission medium. For networks that use cables, you need optical fiber, copper cables, or coaxial cables. Meanwhile, if the wireless network route is included in a computer network that uses wireless data connections to connect to end points, in this case what is meant by end points are cellular radio, broadcast radio, satellite and microwave. B. NIC NIC is an abbreviation for Network Interface Card. This NIC means a piece of equipment that can send and receive data on a network. Most Network Cards are internal cards, namely network cards that are installed in the expansion slot on the computer. The functions of the Network Interface Card (NIC) include the following: • connect the network cable to the computer. • provides physical addressing, namely the network card has a certain unique code Based on the explanation above, it can be concluded that NIC is an abbreviation for Network Interface Card. This NIC means a piece of equipment that can send and receive data on a network. 4. Explain the meaning of nodes in a computer network Computer network A computer network means two or more computers that are connected to each other and used for various data. Computer networks are built using a combination of hardware and software. In creating a computer network, there are switches and routers that use protocols and algorithms to exchange information and carry data to the end point as desired. The purpose of creating a computer network is so that the information or data carried by the sender (transmitter) can reach the recipient (receiver) precisely and accurately. Computer networks allow users to communicate with each other easily. Each endpoint or also known as a host on a network has a unique identifier, often an IP address or Media Access Control address which is used to indicate the source and even destination of transmission. Endpoints can include servers, telephones, personal computers, and many types of hardware in a network. Computer networks are created using a combination of cable and wireless technology. Network devices always communicate via cable or even wireless transmission medium. For networks that use cables, you need optical fiber, copper cables, or coaxial cables. Meanwhile, if the wireless network route is included in a computer network that uses wireless data connections to connect to end points, in this case what is meant by end points are cellular radio, broadcast radio, satellite and microwave. C. Nodes Node has the meaning of a connection point, redistribution point, or end point of communication (several equipment terminals). The definition of a node depends on the network and protocol layer it has. Physical network nodes are active electronic devices that are installed into the network, and are capable of creating, receiving, and sending information via communication channels. In data communications, a physical network node can be a data communications device (DCE) such as a modem, hub, bridge or switch; or data terminal equipment (DTE) such as digital telephone handsets, printers or host computers, for example routers, workstations or servers. 5. Explain the advantages and disadvantages of wireless networks A computer network means two or more computers that are connected to each other and used for various data. Computer networks are built using a combination of hardware and software. In creating a computer network, there are switches and routers that use protocols and algorithms to exchange information and carry data to the end point as desired. The purpose of creating a computer network is so that the information or data carried by the sender (transmitter) can reach the recipient (receiver) precisely and accurately. Computer networks allow users to communicate with each other easily. A wired network means a network that uses cables as a data transmission medium, while a wireless network is a network that does not use cables as a data transmission medium. a. Wireless network advantages: • Can be used at any time. • The ability to access data on the wireless network in real time, as long as it is in the hotspot area. • Fast wireless network setup process. • No need to use cables or wireless devices. • Can reach places that cannot be reached by cables. • Less budget • Wide wireless network coverage b. Disadvantages of wireless networks: • Transmits data at 1-2 Mbps, while using cable will be faster. • The equipment is relatively expensive. • Radio Propagation (Wave Interference), or a combination of two waves that can disrupt wireless networks. • Network capacity of wireless is limited. • Data security is less guaranteed • Intermittence (or the signal can be intermittent) c. Advantages of cable networks • Low cost • Relatively high level of security (because it is directly connected so the connection is monitored). • Higher and smoother network performance/stability and bandwidth too • Reliability d. Disadvantages of cable networks • Less flexible if there is expansion because it uses cables • Less mobility of cable networks • Wired LAN must be placed in a safe place from various threats • Security on wired LAN can be lost if the network cable is cut or tapped.