Network Flashcards
What does Network Architect mean
Responsible for creating, maintaining and modifying an IP network’s hardware, software and virtualized components. Required to maintain expert-level knowledge regarding network hardware and software technology, they must also be able to translate a network’s technological requirements into solutions that benefit a given business.
Network Architects - Who are they?
Network architects are typically considered experts in terms of integrating a given network’s hardware and software components. Consequently they are often sought out for their macro-level knowledge of an organization’s network configuration, as they are responsible for knowing both the physical and logical placement of each node within their assigned network. Furthermore, network architects are intimately familiar with the latest networking protocols, server technology and security vulnerabilities.
What is the difference between a Network Engineer and a Network Administrator?
The engineering side of things tends to deal more with planning, design, and technical specifications, whereas the administration side of things deals mostly with day-to-day maintenance, management and troubleshooting efforts.
The job titles may also be differentiated by education and/or earnings. Typically, a network engineer has more education and earns more than a network administrator.
What is a Network Engineer?
A network engineer is a technology professional who has the necessary skills to plan, implement and support the computer networks that support in-house voice, data, video and wireless network services.
What does Wide Area Network (WAN) mean?
A wide area network (WAN) is a network that exists over a large-scale geographical area. A WAN connects different smaller networks, including local area networks (LAN) and metro area networks (MAN). This ensures that computers and users in one location can communicate with computers and users in other locations. WAN implementation can be done either with the help of the public transmission system or a private network.
A WAN works in a similar fashion to a LAN, just on a larger scale. Typically, TCP/IP is the protocol used for a WAN in combination with devices such as routers, switches, firewalls and modems.
Who is usually responsible for WAN, Data & Voice, Firewalls and Security?
Network Engineer
What is TCP
Transmission control protocol (TCP) is a network communication protocol designed to send data packets over the Internet.
TCP is a transport layer protocol in the OSI layer and is used to create a connection between remote computers by transporting and ensuring the delivery of messages over supporting networks and the Internet.
How does TCP work?
TCP ensures end-to-end delivery of data between distinct nodes. TCP works in collaboration with Internet Protocol, which defines the logical location of the remote node, whereas TCP transports and ensures that the data is delivered to the correct destination.
Before transmitting data, TCP creates a connection between the source and destination node and keeps it live until the communication is active. TCP breaks large data into smaller packets and also ensures that the data integrity is intact once it is reassembled at the destination node.
What does router mean?
A router is a device that analyzes the contents of data packets transmitted within a network or to another network. Routers determine whether the source and destination are on the same network or whether data must be transferred from one network type to another, which requires encapsulating the data packet with routing protocol header information for the new network type.
What does Network Administrator mean?
A network administrator is an IT expert who manages an organization’s network. The network administrator must possess a high level of technological knowledge and is most commonly the highest level of technical staff within a given organization. Network administrators keep networks operational and monitor functions and operations within the network.
A network administrator is responsible for installing, maintaining and upgrading any software or hardware required to efficiently run a computer network. The IT or computer network may extend to a local area network, wide area network, the Internet and intranets.
What does a network switch do?
A switch can connect your computers, printers and servers, creating a network of shared resources.
What is a managed switch?
A managed switch allows you access to program it. This provides greater flexibility to your networking basics because the switch can be monitored and adjusted locally or remotely to give you control over network traffic, and who has access to your network.
What is an unmanaged switch?
An unmanaged switch works out of the box and does not allow you to make changes. Home-networking equipment typically offers unmanaged switches.
What is a router?
Routers analyze the data being sent over a network, change how it is packaged, and send it to another network, or over a different type of network. They connect your business to the outside world, protect your information from security threats, and can even decide which computers get priority over others.
Name 3 different capabilities a router may have.
Firewall: Specialized software that examines incoming data and protects your business network against attacks
Virtual Private Network (VPN): A way to allow remote employees to safely access your network remotely
IP Phone network : Combine your company’s computer and telephone network, using voice and conferencing technology, to simplify and unify your communications
