NETWORK ADMINISTRATOR AND NETWORK ENGINEERING

Network administrator is a modern professional responsible for the maintenance of computer hardware and software that comprises a computer network. ...
en.wikipedia.org/wiki/Network_administrator - 24k - Cached - Similar pages

This guide provides detailed information about the Network Administration Service Management Function (SMF) for organizations that have deployed, ...
www.microsoft.com/technet/solutionaccelerators/cits/mo/smf/smfnetadm.mspx - 85k -
Cached - Similar paNetwork administrator is a modern professional responsible for the maintenance of computer hardware and software that comprises a computer network. This normally includes the deployment, configuration, maintenance and monitoring of active network equipment. A related role is that of the network specialist, or network analyst, who concentrate on network design and security.
Network administration commonly includes activities and tasks such as network address assignment, assignment of routing protocols and routing table configuration as well as configuration of authentication and authorization – directory services. It often includes maintenance of network facilities in individual machines, such as drivers and settings of personal computers as well as printers and such. It sometimes also includes maintenance of certain network servers: file servers, VPN gateways, intrusion detection systems, etc.
Network specialists and analysts concentrate on the network design and security, particularly troubleshooting and/or debugging network-related problems. Their work can also include the maintenance of the network's authorization infrastructure, as well as network backup systems.
The administrator is responsible for the security of the network and for assigning IP addresses to the devices connected to the networks. Assigning IP addresses gives the subnet administrator some control over the professional who connects to the subnet. It also helps to ensure that the administrator knows each system that is connected and who personally is responsible for the system.
When the administrator gives a system an IP address, he also delegates certain security responsibilities to the system administrator.

ENGINEERING NETWORK
Network Engineer
What is a network engineer? The definition for network engineer is a person who has significant responsibility in the design, implementation and support for the converged digital network.
A network engineer is responsible for the planning, design, and implementation of Local and Wide Area Networks (LANs and WANs). Network engineers usually design and implement large heterogeneous networks, and are required to have significant expertise in designing and administering network hardware and software from vendors like Juniper, Nortel Networks, Microsoft, Cisco Systems and CheckPoint. It is not uncommon for network engineers to hold certifications such as Microsoft Certified Systems Engineer, Cisco Certified Internetworking Expert, or Certified NetWare Engineer or Juniper Networks Certified Internet Expert

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ADVANTAGES OF ADMINISTRATION
The obvious advantage is cost: There is no special hardware to buy, and you do not have to invest in a second NIC for each cluster node. Admittedly, considering the low cost of NICs, those savings might be negligible. The second advantage is that you don't have to worry about router compatibility issues. Nearly every router supports unicast, although some do not support multicast MAC addresses.