35 terms

Computer Engineering I 107

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Cable Tester
Networking tool used to verify electrical connections in network cables, checks the individual wires inside of a twisted pair, coaxial, or fiber optic cable, consists of a transmitter and receiver which go on opposite ends of the cable in question
Crimper
Networking tool used to join a network cable to a connector during the cable build process
Loopback Plug
Device used to test network ports on a computer, a physical troubleshooting tool for testing a network interface that sends outbound traffic directly back into the interface
Multimeter
Device used to test electrical values, such a voltage, current, resistance and continuity
Punch Down Tool
Networking tool used to join a network cable to a patch panel or block
Toner Probe
Device used to test the logical states, 0 or 1, of a digital circuit, finds a wire that is within a large bundle of wires, a transmitter and receiver make up the tool, the transmitter is connected to two wires inside the cable, and the receiver is then used to detect a tone on the other end of the cable thereby locating it
Wire Stripper
Networking tool used to remove plastic insulation from electric wires
Automatic Media Dependent Interface Crossover
(Auto MDI-X) Detects if the connection would require a crossover, and automatically chooses the MDI or MDI-X configuration to properly match the other end of the link
Carrier Sense Multiple Access with Collision Avoidance
CSMA/CA used on wireless networks, does not detect collisions but tries to avoid them by waiting before transmitting
Channels
11 wireless frequencies defined by the Federal Communications Commission as channels that exist inside the 2.4 GHz frequency band
Firmware
The software that controls the router's hardware, found on manufacturer's website
IEEE 802.11
Or Wi-Fi is a collective group of standards that specify the radio frequencies, speeds, and other capabilities for WLANs
Open System Authentication
Any wireless device can connect to the wireless network, use where security is of no concern
Port Forwarding
The ability of a router and its firewall to determine the internal destination of a packet based on its incoming port number, this allows remote hosts to connect to internal hosts through NAT, these settings are user configured for services like HTTP, FTP, and SSH
Port Triggering
An ability of a router that is much like port forwarding, triggering allows incoming traffic on a specific port or range of ports if and only if traffic went out of another specified port first, the triggered inbound port stays open for a specified time or until the outbound port no longer has traffic on it, this limitation makes it more secure than port forwarding which is always open
Quality of Service
(QoS) Settings that allow the router to differentiate traffic based on the application from which it originates, on the basic level, streaming, online gaming, and web browsing are usually differentiated
Service Set Identifier
(SSID) A toggle for a WAP or wireless router that permits/prevents the network name broadcast, the benefits of leaving this enabled far outweigh the drawbacks
Shared Key Authentication
Provide mechanisms to authenticate and encrypt data between a wireless client and AP or wireless router
Wired Equivalent Privacy
Original 802.11 standard to secure WLANs, in which encryption key never changes thus easy to hack
Wi-Fi Protected Access
Uses WEP but secures data with Temporal Key Integrity Protocol (TKIP) encryption algorithm thus more difficult to hack
APIPA
A 169.254.x.x IPv4 addressing scheme that takes place when a DHCP server cannot be contacted by devices that are set to receive DHCP information
Intermittent Connectivity
One of the worst issues that can occur, this is a state in which connection to the Internet switches from available to unavailable for no apparent reason at random intervals
IP Conflict
A situation in which two hosts are configured with the same IP address
Ipconfig
A software tool that provides IP information, it can also be used to release and renew IP addresses
Limited Connectivity
A state where a DHCP server is providing addresses, but a connection to the Internet is unavailable
Local Connectivity
This can coexist with APIPA addressing, a state in which only LAN connection exists
Low RF Signal
A situation that can be monitored by the wireless indicator on a host device in which the transmitted signal from a WAP or wireless router is not strong
Nbtstat
A software tool that reports what other Windows hosts are connected to a specified Windows host
Netstat
A software tool used to report network statistics of a Windows host
No Connectivity
A situation that occurs when there is complete media or device failure
Pathping
A software tool that combines output from the ping and tracert commands
Ping
A software tool that is used to verify connectivity between two IP devices
Slow Transfer Speeds
A situation in which data transfers which should not be limited by the network are clearly being bottlenecked by the network
Tracert
A software tool used to trace the hops within a route to a specified IP endpoint
Wireless Locator
A software or hardware tool that provides information about the wireless networks surrounding a host