[ITN 101] ONE / Intro to Networking
Exam-Graded A
peer-to-peer network - ANS-In small businesses and homes, many computers function
as the servers and clients on the network
advantages to ptp networking - ANS-easy to set up
less complex
lower cost because network devices and dedicated services may not be required
can be used for simple tasks such as transferring files and sharing printers
disadvantages of ptp networking - ANS-no centralized administration
not as secure
not scalable
all devices may act as both clients and servers which can slow their performance
internetwork - ANS-intermediary devices connect the individual end devices to the
network. They can connect multiple individual networks to form an internetwork.
intermediary devices - ANS-wireless router
LAN switch
router
multilayer switch
firewall appliance
Intermediary network devices perform some or all of these functions - ANS-regenerate
and retransmit signals
maintain information about what pathways exist through the netwrok and internetwork
notify other devices of errors and communication failures
direct data along alternate pathways when there is a link failure
classify and direct messages according to priorities
permit or deny the flow of data, based on security settings
legacy ethernet hub also known as a multiport repeater do this - ANS-regenerate and
retransmit communication signals. Notice that all intermedary devices perform the
function of a repeater.
modern networks primarily use three types of media to interconnect devices
What are they?(photo available module1.2.5) - ANS-Metal wires within cables - data is
encoded into electrical impulses
, glass or plastic fibers within cables (fiber-optic cable) - data is encoded into pulses of
light
wireless transmission - data is encoded via modulation of specific frequencies of
electromagnetic waves
Metal wires within cables - ANS-data is encoded into electrical impulses
glass or plastic fibers within cables (fiber-optic cable) - ANS-data is encoded into pulses
of light
wireless transmission - ANS-data is encoded via modulation of specific frequencies of
electromagnetic waves
host - ANS-all computers connected to a network that participate directly in network
communication
end devices (pa m1.3.1) - ANS-desktop computer
laptop
printer
IP phone
wireless tablet
telepresence endpoint
intermediary devices (pa m1.3.1) - ANS-wireless router
LAN switch
router
multilayer switch
firewall appliance
network media (pa m1.3.1) - ANS-wireless media
LAN media
WAN media
Network Interface Card NIC - ANS-a NIC physically connects the end device to the
network
DSL - ANS-provide high bandwidth, high availability, and an always-on connection to
the internet. DSL runs over telephone lines. usually, SOHO users connect using
Asymmetrical DSL (ADSL), which means that the download speed is faster than the
upload speed
cellular - ANS-cellular internet access uses a cell phone network to connect. Wherever
there is cellular signal, you can get cellular internet access. Performance is limited by
the capabilities of the phone and the cell tower to which it is connected
Exam-Graded A
peer-to-peer network - ANS-In small businesses and homes, many computers function
as the servers and clients on the network
advantages to ptp networking - ANS-easy to set up
less complex
lower cost because network devices and dedicated services may not be required
can be used for simple tasks such as transferring files and sharing printers
disadvantages of ptp networking - ANS-no centralized administration
not as secure
not scalable
all devices may act as both clients and servers which can slow their performance
internetwork - ANS-intermediary devices connect the individual end devices to the
network. They can connect multiple individual networks to form an internetwork.
intermediary devices - ANS-wireless router
LAN switch
router
multilayer switch
firewall appliance
Intermediary network devices perform some or all of these functions - ANS-regenerate
and retransmit signals
maintain information about what pathways exist through the netwrok and internetwork
notify other devices of errors and communication failures
direct data along alternate pathways when there is a link failure
classify and direct messages according to priorities
permit or deny the flow of data, based on security settings
legacy ethernet hub also known as a multiport repeater do this - ANS-regenerate and
retransmit communication signals. Notice that all intermedary devices perform the
function of a repeater.
modern networks primarily use three types of media to interconnect devices
What are they?(photo available module1.2.5) - ANS-Metal wires within cables - data is
encoded into electrical impulses
, glass or plastic fibers within cables (fiber-optic cable) - data is encoded into pulses of
light
wireless transmission - data is encoded via modulation of specific frequencies of
electromagnetic waves
Metal wires within cables - ANS-data is encoded into electrical impulses
glass or plastic fibers within cables (fiber-optic cable) - ANS-data is encoded into pulses
of light
wireless transmission - ANS-data is encoded via modulation of specific frequencies of
electromagnetic waves
host - ANS-all computers connected to a network that participate directly in network
communication
end devices (pa m1.3.1) - ANS-desktop computer
laptop
printer
IP phone
wireless tablet
telepresence endpoint
intermediary devices (pa m1.3.1) - ANS-wireless router
LAN switch
router
multilayer switch
firewall appliance
network media (pa m1.3.1) - ANS-wireless media
LAN media
WAN media
Network Interface Card NIC - ANS-a NIC physically connects the end device to the
network
DSL - ANS-provide high bandwidth, high availability, and an always-on connection to
the internet. DSL runs over telephone lines. usually, SOHO users connect using
Asymmetrical DSL (ADSL), which means that the download speed is faster than the
upload speed
cellular - ANS-cellular internet access uses a cell phone network to connect. Wherever
there is cellular signal, you can get cellular internet access. Performance is limited by
the capabilities of the phone and the cell tower to which it is connected
