Network Components Flashcards
one type of standard is called DOCSIS, which stands for ?
“Data over cable service interface specifications”.
DOCSIS- MODEM is a typical broadband _____ _____.
cable modem
The DOCSIS modem handles both incoming and outgoing ____ _______. Including internet, video, and voice.
data signals
The DOCSIS 3.1 specification supports speeds of __ gigabit downstream & __ Gigabit upstream.
10, 1
A hub is a device that has multiple ports, that accepts Ethernet connections from _______ _______.
ports, network devices
A hub is considered not to be ___________. Because it does not filter any ____, or has any intelligence as to where data is supposed to be sent.
intelligent, data
When a data packet arrives at one of the ports, it is copied to all other ______, so all the devices on that hub sees that ____ ______.
ports, data, packet
there are two different types of hubs:
Passive and Active
what’s the difference between active and passive hubs?
The difference is a passive hub does not require power. But an active hub does require power.
a switch is very similar to a ___.
hub
Also a device that has multiple ports that accepts Ethernet connections from network devices.
But unlike a hub, a switch is ___________.
intelligent
A switch can actually learn the _______ _________ that are connected to it. And it stores these addresses in a table. So when a data packet is sent to a switch, it directs it only to the intended destination port.
physical addresses
switches are far more preferred over hubs, because they reduce any unnecessary _______ on the network.
traffic
Regular switches operate at _____ __ of the OSI model.
layer 2
there are other types of switches that operate at higher levels of the OSI model. and one of these is called a _____-_____ switch.
multi-layer
there are other types of switches that operate at higher levels of the ___ _____.
OSI, Model
A multilayer switch can operate at layer __ and __ of the OSI model. it’s able to interpret layer 3 data similar to a router.
2, 3
Content switch can operate at layers __ through __ of the OSI model.
4, 7
A multilayer switch can operate at layer 2 and __ of the OSI model. it’s able to interpret _____ __ data similar to a router.
3, layer 3
A content switch can perform ____ _________, and advanced filtering and these switches are also very _________.
load balancing, expensive
Networking devices need electrical power to function, and that’s why they have a separate electrical port for a power plug. But some networking devices don’t have an electrical port. It’s not that they don’t need electrical power, it’s just that they get their power and data from the same cable. Which is through the ________ cable.
And this technology is known as ___.
ethernet, PoE
The spanning tree protocol allows for _____ tolerance and prevents unnecessary ______ loops in the network.
fault, traffic
the spanning tree allows the ________ to talk to each other to find if loops are happening in the _______.
switches, network
Bridges are used to ______ a network into separate collision _________.
divide, domains
The bridge only allows data to cross over, if it meets the required ___ _______ of the destination.
MAC, address
Because a bridge keeps a record of all the MAC addresses of the NICs that are connected to it. And it will also block all data from crossing over, If it fails to meet this requirement
MAC Address of the destination
A router is a device that ______ or forwards ____ from one network to another.
routes, data
Routes data packets based on their __ _________.
IP addresses
In a router, When a data packet is received from the router, the router inspects the ______ and determines if the packet was meant for its own network, or if it’s meant for another _______.
packet, network
If the router determines that the data packet is meant for its own network, it receives it. But if it’s not meant for it’s own network, it sends it off to _______ _______.
another, network
A router is essentially the _______ for a network.
gateway
Gateway: a device that joins __ ________ together.
2, networks
a gateway interconnect networks with different or incompatible ____________ _________.
communication, protocols
A gateway does not change the data, it only changes the _______ of the ____.
format, data
CSU/DSU is about the size of a _____.
modem
CSU/DSU: converts data from a _____ area network to a ____ area network.
This has to happen because the data formats between a LAN and a WAN are _________.
local, wide, different
NICs are used to connect a computer to a _______.
network
NIC is Basically a circuit board with a _______ _______ that is installed on your computer.
network, adapter
NIC’s job is to convert incoming serial data into ________ data. So that the computer can __________ it.
parallel, understand
NICs provide a constant dedicated connection to a _______.
network
Every NIC has its own unique identifier, called a ___ ________.
MAC Address
Transceiver: a device that has both a transmitter and a ________ in the same package.
receiver
The term “Transceivers” applies to ________ _____________ devices like cell phones and two-way radios.
wireless, communication
Transceiver is Basically a term used for any device that receives ____, converts it, then transits the data to another _________.
data, location
Wireless access point is basically a ________ hub, that is used by wireless _______.
wireless, devices
WAP connects to a _____ network and relays data between the wired network and the ________ device for communication purposes.
wired, wireless,
modem: device that allows a computer to transmit ____ over normal _________ _____.
data, telephone, lines
The data coming in from a telephone lines is ______. However, the data in a computer is all ______, so when the analog data comes in from the telephone lines, the modem’s job is to convert it into a digital ____, so the computer can understand it.
analog, digital, form
Basically a modem converts analog data into ______ ____.
digital data
The maximum speed of most modems today is __ _____.
56 kbps
