WGU D412 NETWORK ANALYTICS
TROUBLESHOOTING COMPREHENSIVE
STUDY GUIDE 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
⩥ A carrier sense multiple access with collision detection protocol for
local area networks. Answer: Ethernet
⩥ Must have the capability to detect data collisions (collision detection)
to avoid two or more computers from attempting to broadcast a message
at the same time.. Answer: Ethernet systems
⩥ Provide grouping of information for transmission. Answer: packet
⩥ What does the header of a packet consist of?. Answer: The preamble,
start frame delimiter, destination and source addresses, and length/type
field
⩥ Preamble, start frame delimiter, destination mac address, source
address, length/type, data, pad, and frame check sequence.. Answer: The
structure of the Ethernet frame
⩥ An alternating pattern of 1s and 0s used for synchronization. Answer:
The preamble of an Ethernet packet
,⩥ A binary 8 bit sequence of 10101011 that indicates the start of the
frame. Answer: The start frame delimiter of an Ethernet packet
⩥ The MAC address associated with the network adapter or Ethernet
network interface card (NIC). Answer: The destination and source MAC
addresses of an Ethernet packet
⩥ An indication of the number of bytes in the data field if this value is
less than 1500, or if the number is greater than 1500, and indication of
the type of data format such as IP and IPX. Answer: The length/type of
the Ethernet packet frame
⩥ The variable length of data being transferred from the source to the
destiontion. Answer: The data of the Ethernet packet frame
⩥ A field used to bring the total number of bytes up to the minimum of
46 if the data field is less than 46 bytes. Answer: The pad of the Ethernet
packet frame
⩥ A 4 byte CRC value used for error detection. Answer: The frame
check sequence of the Ethernet packet frame
⩥ What is the minimum length of the Ethernet frame from destination
MAC address through the frame check sequence?. Answer: 64 bytes
, ⩥ a device that relays the wireless signals from an access point or
wireless router into areas with a weak signal or no signal at all. Answer:
range extender
⩥ Where can range extenders be used to improve connectivity?. Answer:
Stores, warehouses, and public places using hotspots
⩥ a limited geopgraphic area that provides wireless access for the
public. Answer: hot spot
⩥ What basic steps can help secure a wireless home network?. Answer:
"1. Change the default factory password
2. Change the default SSID
3. Turn encryption on
4. Turn off the SSID broadcast
5. Enable MAC address filtering"
⩥ How should a default password on a wireless device be reset?.
Answer: using a combination of alphanumeric characters
⩥ the name used to identify your network and is used by your access
point or wireless router to establish an association. Answer: SSID
TROUBLESHOOTING COMPREHENSIVE
STUDY GUIDE 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
⩥ A carrier sense multiple access with collision detection protocol for
local area networks. Answer: Ethernet
⩥ Must have the capability to detect data collisions (collision detection)
to avoid two or more computers from attempting to broadcast a message
at the same time.. Answer: Ethernet systems
⩥ Provide grouping of information for transmission. Answer: packet
⩥ What does the header of a packet consist of?. Answer: The preamble,
start frame delimiter, destination and source addresses, and length/type
field
⩥ Preamble, start frame delimiter, destination mac address, source
address, length/type, data, pad, and frame check sequence.. Answer: The
structure of the Ethernet frame
⩥ An alternating pattern of 1s and 0s used for synchronization. Answer:
The preamble of an Ethernet packet
,⩥ A binary 8 bit sequence of 10101011 that indicates the start of the
frame. Answer: The start frame delimiter of an Ethernet packet
⩥ The MAC address associated with the network adapter or Ethernet
network interface card (NIC). Answer: The destination and source MAC
addresses of an Ethernet packet
⩥ An indication of the number of bytes in the data field if this value is
less than 1500, or if the number is greater than 1500, and indication of
the type of data format such as IP and IPX. Answer: The length/type of
the Ethernet packet frame
⩥ The variable length of data being transferred from the source to the
destiontion. Answer: The data of the Ethernet packet frame
⩥ A field used to bring the total number of bytes up to the minimum of
46 if the data field is less than 46 bytes. Answer: The pad of the Ethernet
packet frame
⩥ A 4 byte CRC value used for error detection. Answer: The frame
check sequence of the Ethernet packet frame
⩥ What is the minimum length of the Ethernet frame from destination
MAC address through the frame check sequence?. Answer: 64 bytes
, ⩥ a device that relays the wireless signals from an access point or
wireless router into areas with a weak signal or no signal at all. Answer:
range extender
⩥ Where can range extenders be used to improve connectivity?. Answer:
Stores, warehouses, and public places using hotspots
⩥ a limited geopgraphic area that provides wireless access for the
public. Answer: hot spot
⩥ What basic steps can help secure a wireless home network?. Answer:
"1. Change the default factory password
2. Change the default SSID
3. Turn encryption on
4. Turn off the SSID broadcast
5. Enable MAC address filtering"
⩥ How should a default password on a wireless device be reset?.
Answer: using a combination of alphanumeric characters
⩥ the name used to identify your network and is used by your access
point or wireless router to establish an association. Answer: SSID
