CompTIA A+ 1101 section 2 networking part 3
What are the characteristics of Bluetooth?
2.4 GHz frequency range Used for connecting devices in a WPAN Short-range wireless technology
Frequency bands used by 802.11 networks include:
5.0 GHz 2.4 GHz
What are features of the IEEE 802.11ac (WiFi 5) wireless standard?
5.0 GHz frequency band Maximum data signaling rate of up to 6.933 Gbps Multi-User Multiple Input / Multiple Output (MU-MIMO)
What are the characteristics of the IEEE 802.11ax (WiFi 6) wireless standard?
5.0 GHz frequency band Multi-User Multiple Input / Multiple Output (MU-MIMO) 2.4 GHz frequency band Maximum data signaling rate of up to 9.607 Gbps
What are examples of an unlicensed wireless frequency band?
900 MHz 2.4 GHz 5 GHz 5.8 GHz
What are the characteristic features of cable modems?
Cabling that carries TV signals Coaxial cabling Shared bandwidth
What characteristics apply to DSL modems?
Dedicated bandwidth Twisted-pair copper cabling Telephone lines
A network segment utilizing only this type of device is the most prone to network performance degradation due to large number of network collisions.
Hub
The disadvantage from using this device results from the fact that any incoming signal on any of its ports is re-created and sent out on any connected ports which has a negative impact on network performance.
Hub
Which of the following tools allows to identify bad port on a network device?
Loopback plug
What are characteristics of the the IEEE 802.11b wireless standard?
Maximum data signaling rate of 11 Mbps 2.4 GHz frequency range
What are characteristics of the IEEE 802.11g wireless standard?
Maximum data signaling rate of 54 Mbps 2.4 GHz frequency range
What are the characteristic features of the IEEE 802.11a wireless standard?
Maximum data signaling rate of 54 Mbps 5.0 GHz frequency band
The characteristic features of the IEEE 802.11n wireless standard include:
Multiple Input / Multiple Output (MIMO) 2.4 GHz frequency band 5.0 GHz frequency band Maximum data signaling rate of up to 600 Mbps
Which of the following answers refers to a computer's hardware component designed for enabling network access?
NIC
Which type of fiber-optic equipment can be found at the demarc?
ONT
Which of the following antenna types would be the least suitable for long-range point-to-point bridging links?
Omnidirectional antenna
The IEEE 802.3bt standard implements:
PoE++ 4PPoE
Which wireless technology enables identification and tracking of tags attached to objects?
RFID
Which of the answers listed below refers to a technology designed to simplify network infrastructure management?
SDN
What directional antenna types are suitable for long-range point-to-point bridging links?
Yagi antenna Dish antenna Parabolic antenna
The term "Port flapping" refers to:
to a condition where port light on a network device rapidly alternates between up and down states
Multiple Input / Multiple Output (MIMO) is:
a wireless technology that allows for significant increase in wireless data throughput due to the use of multiple antennas and multiple data streams.
Port Flopping is usually related to:
faulty or unsupported cable and/or incorrect link synchronization settings such as speed and duplex mismatch.
The functionality of a Network Interface Card (NIC) can be checked by pinging:
localhost ::1 127.0.0.1
Setting up a wireless network to operate on a non-overlapping channel (1, 6, and 11 in this case) allows:
multiple networks to coexist in the same area without causing interference
A common example of channel overlapping in wireless networking would be:
the 2.4 GHz band used in 802.11 networks, where the 2.401 - 2.473 GHz frequency range is used for allocating 11 channels, each taking up a 22-MHz portion of the available spectrum.