CSS12 AMBER Q1 L2 Computer Systems Servicing
- 1. TVL-ICT Computer Systems Servicing NCII b y : R O L A N M I N E R V A
- 2. ROUTER SETTING AND WI- FI CONFIGURATION Installing a Network Router
- 4. 1. Check network connectivity of each terminal in accordance with network design. 2. Diagnose and repair any problem or fault in the network system in line with standard operating procedures. 3. Configure Network Interface Card (NIC) in accordance with the network design. At the end of the lesson you will be able to:
- 6. System Configuration - is the way a system is set up. - It is the collection of components that make up the system. - can refer to either hardware or software, or the combination of both.
- 7. IP Addressing - is a number that is used to identify a device on the network. - Each device on a network have a unique IP address to communicate with other network devices. IP Address
- 8. IP Address An IP address consists of a series of 32 binary bits (1s and 0s). It is very difficult for humans to read a binary IP address. For this reason, the 32 bits are grouped into four 8-bit bytes called octets. An IP address, even in this grouped format, is hard for humans to read, write, and remember. Therefore, each octet is presented as its decimal value, separated by a decimal point or period. This format is called dotted-decimal notation. When a host is configured with an IP address, it is entered as a dotted-decimal number, such as 192.168.1.5
- 9. IP Address The logical 32-bit IP address is hierarchical and is composed of two parts. The first part identifies the network, and the second part identifies a host on that network. Both parts are required in an IP address. For example, if a host has an IP address of 192.168.18.57, the first three octets, 192.168.18, identify the network portion of the address, and the last octet, 57, identifies the host. This is called hierarchical addressing, because the network portion indicates the network on which each unique host address is located. Routers only need to know how to reach each network, not the location of each individual host.
- 12. Subnet Mask The subnet mask indicates the network portion of an IP address. Like the IP address, the subnet mask is a dotted-decimal number. Usually, all hosts within a LAN use the same subnet mask. Table 1 shows default subnet masks for usable IP addresses that are mapped to the first three classes of IP addresses: • CLASS A, 255.0.0.0: which indicates that the first octet of the IP address is the network portion • CLASS B, 255.255.0.0: which indicates that the first two octets of the IP address are the network portion • CLASS C, 255.255.255.0: which indicates that the first three octets of the IP address are the network
- 13. TABLE 1. Default Subnet Masks for Usable IP Addresses CLASS A NETWORK HOST Octect 1 2 3 4 CLASS B NETWORK HOST Octect 1 2 3 4 CLASS C NETWORK HOST Octect 1 2 3 4 CLASS D addresses are used for multicast groups. There is no need to allocate octet or bits to separate network and host addresses. CLASS E addresses are reserved for research use only.
Editor's Notes
- #6: For instance, a typical configuration for a PC consists of 32MB (megabytes) main memory, a hard disk, a modem, a CD-ROM drive, a VGA monitor, and the Windows Operating System. When you install a new device or program, you sometimes need to configure it. For example, the device or program may need to know what type of video adapter you have and what type of printer is connected to the computer.
- #7: Network devices are those that move data across the network, including hubs, switches, and routers. On a LAN, each host (device that sends or receives information on the network) and network device must have an IP address within the same network to be able to communicate with each other. A person’s name and fingerprints usually do not change. They provide a label or address for the person’s physical aspect—the body. A person’s mailing address, on the other hand, relates to where the person lives or picks up mail. This address can change. On a host, the Media Access Control (MAC) address is assigned to the host Network Interface Card (NIC) and is known as the physical address. The physical address remains the same regardless of where the host is placed on the network in the same way that fingerprints remain with someone regardless of where he or she goes.
- #9: Hierarchical in arranged in order of rank SHOW AN EXAMPLE By using the Wifi Router
- #10: A private IP address, such as a home or office network, is assigned to a device on a local network and is used to identify the device within that network. On the other hand, a public IP address is assigned to a device directly connected to the internet and is used to identify the device on the internet. Automatic Private IP Addressing (APIPA) is a feature in operating systems (such as Windows) that enables computers to automatically self-configure an IP address and subnet mask when their DHCP server isn't reachable. The IP address range for APIPA is 169.254. 0.1-169.254. 255.254, with the subnet mask of 255.255.