The Role Of IT In Business Flashcards
What three types of hardware are there that go into a IT infrastructure?
Computer hardware
External hardware deceives
Infrastructure housing
Physical components of computers and computer-related accessories are referred to as:
Computer hardware
Items such as mice, keyboards, speakers, microphones, disk drives, monitors, etc. that do not need to be physically inside a machine but can still connect to it are examples of what?
External hardware devices
Facilities and the safeguards on the facilities that contain hardware such as data centers or offices are part of what IT infrastructure? This could be a security system that monitors control access or ventilation and climate control to keep equipment regulated.
Infrastructure housing
What are 6 networking devices that go into the IT infrastructure that enable connectivity and communication between computer devices on a computer network by transmitting information between devices?
Modem Routers Switches Gateway Servers Firewalls
Connects an organizations network to the internet
Modem
Manages network traffic by connecting devices to form a network
Router
Similar to routers in that they connect and divide devices within a computer network; however, they do not perform as many advanced functions as a router
Switches
A computer or device that acts as an intermediary between different networks. It transforms data from one protocol into another os that information can flow between networks
Gateway
Physical or virtual machines that coordinate the computers, programs, and data that are part of the network.
Servers
Various types: web servers, file servers, print servers, and database servers
Software applications or hardware devices that protect a company’s network traffic by filtering it through security protocols with predefined rules
Firewall
Types of firewalls include:
Circuit level gateways Application level gateways Stateful multilayer inspection firewalls Next generation firewalls Network address translation firewalls
A firewall that controls traffic solely based on the source of origin, the intended destination, the port, and potentially some other very basic information. It does not filter based on the actual content:
Circuit level gateways
A firewall that do the same thing as circuit level gateways, but they also filter by content of the packet. These are more expensive and burdensome due to the amount for processing required.
Application-level gateway (proxy firewalls)
A firewall that combines the circuit level and application level gateways, and also ensures that packets are validated at multiple levels of the communication process
Stateful multilayer inspection firewalls
A firewall that observe packets at multiple levels of the communication process and also apply more scrutiny to packets using more sophisticated techniques such as intrusion detection, user identification, etc.
Next-generation firewall
A firewall that converts a group of private IP addresses into a single public IP address prior to communicating with other devices outside of a company’s network (protects the private IP address)
Network address translation firewall (NAT firewall)
Software that is embedded in hardware that instructs the hardware how to operate
Firmware
Group of computers and other machines that are interconnected technology using a series of network devices
Network
Common types of Networks used in Software are:
Local area networks (LAN) Wide are networks (WAN) Software defined wide area networks (SD-WAN) Edge enabled devices Virtual private networks (VPN)
Provides network access to a limited geographical area and data is transported over private lines:
Local area networks (LAN)
Provides network access to a larger geographical area and connects LANs together
Wide area network (WAN)
Support an organization at “the edge” or perimeter of a systems network
Edge enabled devices
Encrypted private networks that run on a public network
Virtual private networks (VPN)
