Homework questions Flashcards
An administrator measured the transfer of usable data across a 100 Mb/s physical channel over a given period of time and obtained 60 Mb/s. Which kind of measurement did the administrator obtain?
digital bandwidth
latency
throughput
goodput
goodput
Which standards organization oversees development of wireless LAN standards?
ISO
IEEE
IANA
TIA
IEEE
Which two factors influence the method that is used for media access control? (Choose two.)
how the connection between nodes appears to the data link layer
how signals are encoded by the NICs on end devices
how data is generated by end devices applications
how the IP protocol forwards the packet to the destination
how nodes share the media
how the connection between nodes appears to the data link layer
how nodes share the media
Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.)
International Telecommunication Union (ITU)
International Organization for Standaraization (ISO)
Internet Assigned Numbers Authority (IANA)
Internet Society (ISOC)
Electronic Industries Alliance (EIA)
International Telecommunication Union (ITU)
International Organization for Standardization (ISO)
What type of cable is used to connect a workstation serial port to a Cisco router console port?
straight-through
coaxial
rollover
crossover
rollover
Which of the following counters EMI and RFI by using shielding techniques and special connectors?
UTP
STP
Coaxial
STP
In fiber optic media, the signals are represented as patterns of
pulses of voltage
Radio frequency
Light
Light
When is a wired connection preferred to a wireless connection by an end-user device?
when the end-user device is within range of a wireless signal
when the end-user device only has a WLAN NIC
when the end-user device will run an application that is delay tolerant
when the end-user device will run an application that requires a dedicated connection to the network.
When the end-user device will run an application that requires a dedicated connection to the network
What is the purpose of the OSI physical layer? (Choose two)
exchanging frames between nodes over physical media
Controlling access to media
Transmitting bits across the local media
Performing error detection on received frames
Transmitting bits across the local media
Performing error detection on received frames
Which type of UTP cable is used to connect a PC to a switch port?
console
straight-through
crossover
rollover
straight-through
What is a characteristic of UTP cabling?
cladding
immunity to electrical hazards
cancellation
woven copper braid or metallic foil
Cancellation
