Course 4: Wireless Access Points

Question 1

For best network performance, you should:

A) Use wired connections always
B) Use wireless when absolutely necessary
C) Use wireless when it is convenient
D) Use wired connections for larger networks

Answer 1

B) Use wireless when absolutely necessary

Question 2

Which of these makes WiFi more difficult for the customer to use while adding no security benefit?

A) Enabling the 2.4 GHz band
B) Hiding the SSID
C) Using channels wider than 20 MHz
D) Enabling Bandsteering

Answer 2

B) Hiding the SSID

Question 3

The strongest type of wireless encryption currently available is:

A) WEP
B) WAP-PSK
C) WPA2-PSK
D) AP-PSK

Answer 3

C) WPA2-PSK

Question 4

Which the channel band in the 2.4 GHz band do not overlap?

A) 1, 3, 9
B) 1, 6, 11
C) 2, 5, 11
D) 43, 44, 149

Answer 4

B) 1, 6, 11

Question 5

Which password is the strongest?

A) strOngp@ss
B) &@^2zP@$
C) secretpass
D) picnicinthepark

Answer 5

D) picnicinthepark

Question 6

When planning for wireless network capacity, a good rule of thumb to use is that each access point can accommodate ____ devices and still provide excellent performance.

A) 20
B) 65
C) 50
D) 30

Answer 6

D) 30

Question 7

The highest possible, though realistically unattainable throughput of an access point is its _____?

A) bandwidth
B) rssi
C) Backplane
D) physical data rate

Answer 7

D) physical data rate

Question 8

What three main factors do you have direct control over when installing and setting up a wireless network?

A) Interference, Attenuation, Obstructions
B) Network MAC Addresses, Usernames, Passwords
C) Channel, Placement, Transmit Power
D) Bandsteering, Roaming, Encryption

Answer 8

C) Channel, Placement, Transmit Power

Question 9

Which channel is not a channel in UNII-1?

A) 32
B) 36
C) 40
D) 44

Answer 9

A) 32

Question 10

When two channels overlap slightly that causes what type of interference?

A) Co-Channel Interference
B) Data Rate Interference
C) Adjacent-Channel Interference
D) Obstruction Interference

Answer 10

C) Adjacent-Channel Interference

Question 11

How are access points similar to switches?

A) They use MAC addresses to forward data
B) They examine packets to forward data
C) They use IP addresses to forward data
D) They are both “Layer-3” devices

Answer 11

A) They use MAC addresses to forward data

Question 12

How is the paraphrase for an SSID used?

A) It enables devices to access the frequency of the network
B) It enables encryption and decryption of data for the SSID
C) It allows communication with all access points within range
D) It allows a device to join an SSID for a specific access point

Answer 12

B) It enables encryption and decryption of data for the SSID

Question 13

Which RSSI value has the strongest signal?

A) -70 dBm
B) -65 dBm
C) -40 dBm
D) -30 dBm

Answer 13

D) -30 dBm

Question 14

What is the advantage of a wireless guest network?

A) It increases the AP’s capacity by 30 additional devices
B) It prevents guest devices from causing co-channel interference
C) It makes it easy to share a printer connected to the LAN
D) It provides access to the internet but not other devices on the LAN

Answer 14

D) It provides access to the internet but not other devices on the LAN

Question 15

For the 5 GHz band, the RSSI value at the halfway location between the access points should be approximately:

A) -55 dBm
B) -65 dBm
C) -70 dBm
D) -90 dBm

Answer 15

B) -65 dBm

Question 16

When the radio signals from two access points overlap too much, a technician should increase the distance between them or change ________.

A) Current radio band
B) SSID strength
C) Channel width
D) Transmit power

Answer 16

D) Transmit power

Question 17

If two access points were configured to use the following channels for the 5 GHz band, which would cause co-channel interference?

A) Channels 36 and 44 at 40 MHz wide
B) Channels 40 and 48 at 40 MHz wide
C) Channels 44 and 48 at 40 MHz wide
D) Channels 36 and 48 at 40 MHz wide

Answer 17

C) Channels 44 and 48 at 40 MHz wide

Question 18

When measuring RSSI, it is considered best practice to use _______.

A) The device with the best radio
B) The newest device you have available
C) The device with the smallest antenna
D) The device that only has a 2.4 GHz radio

Answer 18

C) The device with the smallest antenna

Question 19

When you first start configuring transmit power on an access point, you should set the 2.4GHz band ____ lower than the 5 GHz band

A) 2 dBm
B) 3 dBm
C) 4 dBm
D) 5 dBm

Answer 19

D) 5 dBm