Testout Chapter 3 Test Review with 100% complete solutions
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NIC is also called a network adpater. What does a NIC do? correct answersconnects a host to the network medium, and is responsible for converting binary data into a format to be sent on the network medium.
what does a transceiver do/responsible for? correct answersconverting DIGITAL DATA into DI...
Testout Chapter 3 Test Review
NIC is also called a network adpater. What does a NIC do? correct answersconnects a host to the network medium, and is responsible for converting binary data into a format to be sent on the network medium.
what does a transceiver do/responsible for? correct answersconverting DIGITAL DATA into DIGITAL SIGNALS to be sent on the medium. (type of signal the transceiver sends depends on teh type of network.)
how does a transceiver receive signals correct answersthe transceiver receives signals by converting digital signals from the network to digital data for the PC
what does a modem stand for? correct answersmodulation/demodulation device.
what does a modem do? correct answersconverts binary data to analog waves (modulation) on the sending end, and then converts the analog waves back to binary data (demodulation) on the receiving end.
where are network adapters/NICs in the OSI model? correct answersNICs are layer 1 devices because they send/receive signals on the network medium. HOWEVER, NICs are ALSO layer 2 devices because they must follow the rules for media access, and because they read the physical address in a frame.
what is a transceiver module used for, generally speaking? correct answersused to change the media type of a port on a network device, such as a switch or a router.
list some common types of transceiver modules. correct answersGBIC (gigabit interface converter), SFP (small form factor pluggable), and a XFP transceiver.
describe the GBIC transceiver module. correct answers(gigabit interface converter) is a larger sized transceiver that fits in a port slot and is used for Gigabit media including copper/fiber optic. describe the SFP transceiver module. correct answers(small form-factor pluggable), similar to a GBIC but is a smaller size. An SFP is sometimes called a mini-GBIC.
describe the XFP transceiver module. correct answerssimilar in size to an SFP , but it used for 10 GB networking.
what is a media converter use dfor? correct answersto connect network adapters that are using diff media types. i.e. media converter could be used to connect a server w/ a fiber optic Ethernet NIC to a copper Ethernet cable.
what layer within the OSI model do media converters operate? correct answersmedia converters work at
the physical layer (layer 1).
do media converter read or modify the MAC address in anyway? correct answersno, media converters do
NOT read or modify the MAC address; in anyway.
describe a key concept about media converters. correct answersonly covert from one media type to another within the same architecture (such as Ethernet). A media converter CANNOT translate between two DIFFERENT architectures. (you would use a bridge/router instead.)
Converting from one architecture to another would require modifying the frame contents to modify the Data Link layer address.
what is a MAC address correct answersA MAC address is a unique identifier burned into the ROM of every Ethernet NIC. The MAC address is a 12-digit (48-bit) hexadecimal number (each number ranging from 0-9 or A-F). The MAC address is globally unique by design. The first half (first 6 digits) of the MAC address is assigned to each manufacturer. The manufacturer determines the rest of the address, assigning a unique value that identifies the host address. Devices use
the MAC address to send frames to other devices on the same sub net.
how do some network cards allow you to change the MAC address? correct answersby the use of jumpers, switches, or software.
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