Installs and maintains network file servers and network operating systems; ensures that backup copies of all files are routinely made and securely stored at separate location; maintains system documentation.
network administrator job responsibility
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These responsibilities may seem somewhat similar and will sometimes overlap with those of a systems administrator, but their roles do differ more, the larger the organization gets. In any case, the job duties of a network administrator will vary considerably depending on the size and needs of the organization. While some may take on broader roles, others may be filling more specialized duties.
Becoming a network administrator will require a fair degree of technical competence. Nevertheless, there are certain so-called soft skills that are in high demand, particularly for those looking to work in this profession. These nontechnical abilities will definitely come in handy to all network administrators.
Network administrators are responsible for the day-to-day operation of computer networks at businesses and organizations. They are sometimes known as a computer systems administrator, a network system administrator, or just system administrator.
Our company is looking to hire a network administrator who will be responsible for managing the daily operations of our computer networks. You will be in charge of overseeing digital security and performing maintenance to ensure that the system is operating at full capacity. You will also be tasked with installing hardware and software when necessary.
A bachelor's degree in IT or computer science is needed for you to be considered as a candidate. To be successful in this role, a strong understanding of network infrastructure and the ability to administer and troubleshoot network devices are needed.
The Network Systems Admin should be a self-motivated individual able to provide ongoing day-to-day support to the Network Systems Team, with the ability to focus on the security, reliability and efficiency of the ABC Company network. In addition, the successful Network Admin candidate should be able to manage project based activities including the tracking, scheduling, design, and implementation of hardware, software, and operating system upgrades.
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Each task area corresponds to a phase in the continuing life cycle of a network.You might be responsible for all the phases, or you might ultimately specialize ina particular area, for example, network maintenance.
The first phase in the life cycle of a network involves creating its design,a task not usually performed by new network administrators. Designing a network involvesmaking decisions about the type of network that best suits the needs of your organization.In larger sites this task is performed by a senior network architect: an experiencednetwork administrator familiar with both network software and hardware.
After the new network is designed, the second phase of network administrationbegins, which involves setting up and configuring the network. This consists of installingthe hardware that makes up the physical part of the network, and configuring the filesor databases, hosts, routers, and network configuration servers.
The tasks involved in this phase are a major responsibility for network administrators.You should expect to perform these tasks unless your organization is very large, withan adequate network structure already in place.
"Configuring Network Clients" explains how to set up new hosts on an existingnetwork. "General Troubleshooting Tips" contains hints for solving network problems.For information on network services, refer to Chapter 29, Solaris NFS Environment, Chapter 33, Introduction to Mail Services,the Solaris Naming AdministrationGuide, and the NIS+ Transition Guide. For security-related tasks, refer to the System Administration Guide, Volume1.
The longer a network is in place and functioning properly, the more your organizationmight want to expand its features and services. Initially, you can increase networkpopulation by adding new hosts and expanding network services by providing additionalshared software. But eventually, a single network will expand to the point where itcan no longer operate efficiently. That is when it must enter the fourth phase ofthe network administration cycle: expansion.
"Configuring Routers" contains procedures for setting up an internetwork. "Extending Your Network With PPP" explains how to set up networking connections for nomadic computers. Chapter 25, Overview of UUCP explains how to use UUCP to exchange information between yourmachine and other UUCP systems.
A network communications protocol is a set of formal rulesthat describe how software and hardware should interact within a network. For thenetwork to function properly, information must be delivered to the intended destinationin an intelligible form. Because different types of networking software and hardwareneed to interact to perform the networking function, designers developed the conceptof the communications protocol.
The Solaris operating environment includes the software needed for network operationsfor your organization. This networking software implements the communications protocolsuite, collectively referred to as TCP/IP. TCP/IP is recognizedas a standard by major international standards organizations and is used throughoutthe world. Because it is a set of standards, TCP/IP runs on many different types ofcomputers, making it easy for you to set up a heterogeneous network running the Solarisoperating environment.
TCP/IP provides services to many different types of computers, operating systems,and networks. Types of networks range from local area networks, such as Ethernet,FDDI, and Token Ring, to wide-area networks, such as T1 (telephone lines), X.25, andATM.
The term local-area network (LAN) refers to a single networkof computers limited to a moderate geographical range, such as the floor of a buildingor two adjacent buildings. A local-area network has both hardware and software components.From a hardware perspective, a basic Solaris LAN consists of two or more computersattached to some form of local-area network media.
The cabling or wiring used for computer networks is referred to as network media. Figure 2-1 shows four computers connectedby means of Ethernet media. In the Solaris LAN environment, Ethernet is the most commonlyused local-area network media. Other types of local-area network media used in a SolarisLAN might include FDDI or Token Ring.
Each computer has at least two serial ports, the connectorsthat enable you to plug a printer or modem into the computer. The serial ports canbe attached to the CPU board, or you might have to purchase them. You use these portswhen attaching a modem to the system to establish a PPP or UUCP connection. PPP andUUCP actually provide wide-area network services, since they can use telephone linesas their network media.
The hardware in a computer that enables you to connect it to a network is knownas a network interface. Many computers come with a preinstallednetwork interface; others can require you to purchase the network interface separately.
Each LAN media type has its own associated network interface. For example, ifyou want to use Ethernet as your network media, you must have an Ethernet interfaceinstalled in each host to be part of the network. The connectors on the board to whichyou attach the Ethernet cable are referred to as Ethernet ports.If you plan to use FDDI, each prospective host must have an FDDI network interface,and so on.
Installing network hardware is outside the scope of this guide. Refer to System Administration Guide, Volume1 for instructions for configuring serial ports and manuals accompanyingnetwork media for installation instructions.
The message part of the packet corresponds to the letteritself. Packets can only contain a finite number of bytes of data, depending on thenetwork media in use. Therefore, typical communications such as email messages aresometimes split into packet fragments.
If you are an experienced Solaris user, you are no doubt familiar with the term "host,"a word often used as a synonym for "computer" or "machine."From a TCP/IP perspective, only two types ofentities exist on a network: routers and hosts.
A router is a machine that forwards packets from one networkto another. To do this, the router must have at least two network interfaces. A machinewith only one network interface cannot forward packets; it is considered a host. Most of the machines you set up on a network will be hosts.
It is possible for a machine to have more than one network interface but notfunction as a router. This type of machine is called a multihomedhost. A multihomed host is directly connected to multiple networks through its networkinterfaces. However, it does not route packets from one network to another.
The host name is the name of the local machine, combinedwith the name of your organization. Many organizations let users choose the host namesfor their machines. Programs such as sendmail and rlogin use host names to specify remote machines on a network. System Administration Guide, Volume 1contains more information about host names.
When setting up a network, you must obtain the host names of all machines tobe involved. You will use this information when setting up network databases, as describedin "Naming Entities on Your Network". 2ff7e9595c
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