D316 Test 2025 questions and Verified Answers
what kind of compatibility is built into most NIC adapters
1000BASE-T
how much data is in each hex symbol
half a byte, four bits, a nibble
what symbols can be used in hexadecimal
0-9 and A-F
define half duplex
a computer on a network can send or receive, but not at the same time as another computer.
define a hub
a legacy device that transmits all data to all ports plugged into the device and is a collision
domain
802.3af
POE standard that allows a device to draw up to 15.4w
802.3at (PoE+)
POE standard that supplies up to 25w
802.3bt (PoE++ or 4PPoE)
POE standard that supplies up to about 51 W (Type 3) or 73 W (Type 4) usable power.
The 4 cat standards, their max transfer rate, distance, and standard supported
Single-mode fiber (SMF)
, has a small core (8-10 microns) and is designed to carry a long wavelength (1,310 or 1,550
nm) infrared signal, generated by a high-power, highly coherent laser diode. Single-mode
cables support data rates up to 10 Gbps or better and cable runs of many kilometers,
depending on the quality of the cable and optics.
Multi-mode fiber (MMF)
has a larger core (62.5 or 50 microns) and is designed to carry a shorter wavelength infrared
light (850 nm or 1,300 nm). MMF uses less expensive and less coherent LEDs or vertical cavity
surface emitting lasers (VCSELs) and consequently is less expensive to deploy than SMF.
However, MMF does not support such high signaling speeds or long distances as single-mode
and so is more suitable for LANs than WANs.
wireless lan standard
802.11
Transmission Control Protocol (TCP)
works in the transport layer and ensures all packets or data reaches the end, can recover
from lost packets
User Datagram Protocol (UDP)
works in the transport layer faster than tcp but more unreliable, cannot recover lost data.
used for audio or video transmissions most often
link layer
This layer does not contain TCP/IP protocols as such. At this layer, different local networking
products and media can be used, such as Ethernet or Wi-Fi. WAN interfaces, such as DSL
and cable modems, also work at the Link layer.
internet layer
The Internet Protocol (IP) provides packet addressing and routing within a network of
networks. A PC, laptop, mobile device, or server that can communicate on an IP network is
what kind of compatibility is built into most NIC adapters
1000BASE-T
how much data is in each hex symbol
half a byte, four bits, a nibble
what symbols can be used in hexadecimal
0-9 and A-F
define half duplex
a computer on a network can send or receive, but not at the same time as another computer.
define a hub
a legacy device that transmits all data to all ports plugged into the device and is a collision
domain
802.3af
POE standard that allows a device to draw up to 15.4w
802.3at (PoE+)
POE standard that supplies up to 25w
802.3bt (PoE++ or 4PPoE)
POE standard that supplies up to about 51 W (Type 3) or 73 W (Type 4) usable power.
The 4 cat standards, their max transfer rate, distance, and standard supported
Single-mode fiber (SMF)
, has a small core (8-10 microns) and is designed to carry a long wavelength (1,310 or 1,550
nm) infrared signal, generated by a high-power, highly coherent laser diode. Single-mode
cables support data rates up to 10 Gbps or better and cable runs of many kilometers,
depending on the quality of the cable and optics.
Multi-mode fiber (MMF)
has a larger core (62.5 or 50 microns) and is designed to carry a shorter wavelength infrared
light (850 nm or 1,300 nm). MMF uses less expensive and less coherent LEDs or vertical cavity
surface emitting lasers (VCSELs) and consequently is less expensive to deploy than SMF.
However, MMF does not support such high signaling speeds or long distances as single-mode
and so is more suitable for LANs than WANs.
wireless lan standard
802.11
Transmission Control Protocol (TCP)
works in the transport layer and ensures all packets or data reaches the end, can recover
from lost packets
User Datagram Protocol (UDP)
works in the transport layer faster than tcp but more unreliable, cannot recover lost data.
used for audio or video transmissions most often
link layer
This layer does not contain TCP/IP protocols as such. At this layer, different local networking
products and media can be used, such as Ethernet or Wi-Fi. WAN interfaces, such as DSL
and cable modems, also work at the Link layer.
internet layer
The Internet Protocol (IP) provides packet addressing and routing within a network of
networks. A PC, laptop, mobile device, or server that can communicate on an IP network is
