Chapter 15
Bandwidth
(the width of the band) is the theoretical number of bits that can be transmitted over a network at one time, similar to the number of lanes on a highway.
netdom add
Adds a workstation to the domain
Fiber optic
Another broadband technology used for Internet access. The technology uses a dedicated line from your ISP to your place of business or residence.
2 newer types of fiber-optic connectors
LC (local connector) and MT-RJ (mechanical transfer registered jack) connectors
RJ-11 jacks
Modem cards in desktop computers provide two phone jacks, called ____ so that one can be used for dial-up networking and the other jack can be used to plug in an extension telephone.
netdom move
Moves a workstation to a new domain
netdom resetpwd
Resets the password of the computer account for a domain controller
2 older types of fiber-optic connectors
ST (straight tip) and SC (subscriber connector)
fiber-optic cable
Television, Internet data, and voice communication all share the broadband _____.
point-to-point (PTP)
This dedicated line is called a ____ connection because no other business or residence shares the line with you.
Internet Service Provider (ISP)
To connect to the Internet, a network first connects to an ____ such as Earthlink or Comcast. most common types of connections are DSL and cable Internet
netdom verify
Verifies the connection is secure between a workstation and a domain controller
Power over Ethernet (PoE)
a feature that might be available on high-end wired network adapters to allow power to be transmitted over Ethernet cable.
PoE injector
adds power to an Ethernet cable.
hub
an Ethernet ____ transmits the data frame to every device, except the device that sent the frame. its just a pass-through and distribution point for every device connected to it, without regard for what kind of data is passing through and where the data might be going.
F connector
cable used for RG-6.
loopback plug
can be used to test a network cable or port
net localgroup
command adds, displays, or modifies local user groups. To display available local groups, use the following command: net localgroup
netdom (network domain)
command allows administrators to manage Active Directory domains and trust relationships for Windows Server from the command prompt on the server or remotely from a Windows 8/7 workstation.
tracert (trace route)
command can be useful when you're trying to resolve a problem reaching a destination host such as an FTP site or website. ex: tracert www.cengage.com
ipconfig (IP configuration)
command can display TCP/IP configuration information and refresh the TCP/IP assignments to a connection, including its IP address.
net use
command connects or disconnects a computer from a shared resource or can display information about connections.
netstat (network statistics)
command gives statistics about TCP/IP and network activity and includes several parameters.
ifconfig (interface configuration)
command is similar to ipconfig, and is used on UNIX, Linux, and Mac OS X operating systems.
nbstat (NetBIOS over TCP/IP statistics)
command is used to display statistics about the NetBT (NetBIOS over TCP/IP) protocol. NetBIOS is an older network protocol suite used before TCP/IP.
nslookup (namespace lookup)
command lets you read information from the Internet namespace by requesting information about domain name resolutions from the DNS server's zone data.
net user
command manages user accounts.
ping (Packet InterNet Groper)
command tests connectivity by sending an echo request to a remote computer. If the remote computer is online, detects the signal, and is configured to respond to a ping, it responds.
What do you need to set up small network?
computers, switches, network cables, a router, and whatever device (for example, a DSL or cable modem) that provides Internet access.
cellular network or cellular WAN
consists of cells, and each cell is controlled by a base station.
PAN (personal area network)
consists of personal devices communicating at close range such as a cell phone and laptop computer. wired connections (such as USB or FireWire) or wireless connections (such as Bluetooth or Infrared).
MAN (Metropolitan area network)
covers a large campus or city. (A small MAN is sometimes called a CAN or campus area network.) Network technologies used can be wireless (most likely LTE) and/or wired (for example, Ethernet with fiber-optic cabling).
WAN (wide area network)
covers a large geographical area and is made up of many smaller networks. The best-known WAN is the Internet. Some technologies used to connect a single computer or LAN to the Internet include DSL, cable Internet, satellite, cellular WAN, and fiber optic.
wireless LAN (WLAN)
covers a limited geographical area, and is used in businesses, homes, restaurants, public parks, airports, schools, and many other places where network cabling is inconvenient to install or use.
LAN
covers a small local area, such as a home, office, other building, or small group of buildings. LANs can use wired (most likely Ethernet) or wireless (most likely Wi-Fi, also called 802.11) technologies. A LAN is used for workstations, servers, printers, and other devices to communicate and share resources.
coaxial cable
has a single copper wire down the middle and a braided shield around it. It is stiff and difficult to manage, and is no longer used for networking.
100BaseT or Fast Ethernet
improved version of Ethernet operates at 100Mbps and uses STP or UDP cabling rated CAT-5 or higher.
Cable Internet
is a broadband technology that uses cable TV lines and is always connected (always up).
bridge
is a device that stands between 2 segments of a network and manages network traffic between them.
DSL (Digital Subscriber Line)
is a group of broadband technologies that covers a wide range of speeds. DSL uses ordinary copper phone lines.
network multimeter
is a multifunctional tool that can test cables, ports, and network adapters.
toner probe
is a two-part kit that is used to find cables in the walls of a building.
Switch
is smarter and more efficient than a hub because it keeps a table of all the MAC addresses for devices connected to it.
Wi-Fi analyzer
is software that can find Wi-Fi networks, determine signal strengths, help optimize Wi-Fi signal settings, and help identify Wi-Fi security threats.
data throughput
is the average of the actual speed.
crimper
is used to attach a terminator or connector to the end of a cable.
wire stripper
is used to build your own network cable or repair a cable.
straight-through cable aka patch cable
is used to connect a computer to a switch or other network device.
crossover cable
is used to connect two like devices such as a hub to a hub or a computer to a computer (to make the simplest network of all).
punchdown tool
is used to punch individual wires in a network cable into their slots in a keystone RJ-45 jack that is used in an RJ-45 wall jack.
cable tester
is used to test a cable to find out if it is good or to find out what type of cable it is if the cable is not labeled.
reverse lookup
is when you use the nslookup command to find the host name when you know a computer's IP address, such as: nslookup 192.168.1.102
base station
might include more than one transceiver and antenna on the same tower to support multiple technologies (such as LTE and GSM).
latency
network transmissions experience delays, called _____
Gigabit Ethernet
operates at 1000Mbps and uses twisted-pair cable and fiber-optic cable. Popular choice for LAN.
patch panel
provides multiple network ports for cables that converge in one location such as an electrical closet or server room.
T568A
standard has the green pair connected to pins 1 and 2 and the orange pair connected to pins 3 and 6.
T568B
standard has the orange pair using pins 1 and 2 and the green pair using pins 3 and 6.
RG-6 coaxial cable
used for cable TC, having replaced the older and thinner RG-59 coaxial cable
Twisted-pair cabling
uses pairs of wires twisted together to reduce crosstalk.
Ethernet over Power (EoP)
uses the power lines in a building to transmit data.
