Wireless Configuration

Question 1

In the context of wireless LAN controllers, we always call an etherchannel a:

Answer 1

LAG (Link Aggregation Group)

Question 2

WLCs only support ____ mode LAGs

Answer 2

Static, no PAgP or LACP

Question 3

Which DHCP option can be configured to tell an AP the IP address of its WLC?

Answer 3

DHCP option 43

Question 4

WLC interfaces are _____ interfaces

a) Logical
b) Physical

Answer 4

a) Logical

Like an SVI

Question 5

What are the types of ports a WLC can have?

Answer 5

• Service Port
• Distribution System Ports
• Console Port
• Redundancy Port

Question 6

A WLC Service Port is used for what?

Answer 6

Used for out-of-band management. Must connect to a switch access port.

Question 7

A WLC Distribution System Port is used for what?

Answer 7

Used for data traffic. Usually a switch trunk port, or a LAG

Question 8

What is a WLC Redundancy port?

Answer 8

Used to connect to another WLC to form a high availability pair

Question 9

What are the types of interfaces a WLC can have?

Answer 9

• Management interface (SSH, CAPWAP)
• Redundancy Management (WLC to WLC comms)
• Virtual interface (relaying DHCP, etc)
• Service port interface
• Dynamic interface (map a WLAN to a VLAN)

Question 10

When configuring a WLAN using a WLC GUI, what menu would you use to map the new WLAN to an interface?

Answer 10

General menu

Question 10

When creating a WLAN using a WLC GUI, is the WLAN enabled by default?

Answer 10

No, you have to ensure that you check the enabled box in the general menu

Question 11

Does a WLC have a setup wizard?

Answer 11

Yes

Question 12

What feature of Cisco APs allows for the automatic determination of wireless channel and transmit strength?

Answer 12

Auto-RF

Question 13

What are the types of WLC ports?

Answer 13

• Service (management)
• Distribution system
• Console
• Redundancy (for forming HA WLC pairs)

Question 14

Household WiFi uses _____ for authentication key management

Answer 14

PSK

Question 15

Describe the L3 web authentication security policy

Answer 15

After a client gets an IP and tries to access a web page, they will have to enter a username and password to authenticate

Question 16

Describe the L3 web passthrough security policy

Answer 16

After the client gets an IP and tries to access a web page, a warning/statement is displayed and the client simply has to agree to gain internet access

Question 17

Describe the L3 conditional web redirect security policy

Answer 17

Similar to web auth/ web passthrough, but requires 802.1x L2 authentication

Question 18

Describe the L3 splash page web redirect security policy

Answer 18

Similar to web auth / web passthrough, but requires 802.1x L2 authenticaiton

Question 19

What WLC GUI tab would you use to view SNMP and Syslog statuses and configuration?

Answer 19

Management tab

Question 20

What type of ACL is used to restrict access to WLC management?

Answer 20

CPU ACL

Question 21

Which WLC port can be used to form an HA pair with another WLC?

a) Distribution system port
b) Redundancy port
c) High Availability port
d) Service port

Answer 21

b) Redundancy port

Question 22

Which WLC interface maps a WLAN to a VLAN?

a) Dynamic interface
b) Virtual interface
c) Distribution system interface
d) Service port interface

Answer 22

a) Dynamic interface

Question 23

Which of the following is a type of L3 authentication?

a) 802.1x
b) WPA/WPA2
c) Static WEP
d) Web Authentication

Answer 23

d) Web authentication

Question 24

Which WLC QoS setting should be used for video traffic?

a) Platinum
b) Gold
c) Silver
d) Bronze

Answer 24

b) Gold

Question 25

Which WLC port type can form a LAG to pass standard data traffic?

a) LAG port
b) Distribution system port
c) Service port
d) Console port

Answer 25

b) Distribution system port

Question 26

Which WLC interface controls all L3 communications between a WLC and a lightweight AP?

Answer 26

c) AP-Manager interface

Question 27

If one or more links, but not all, fail on a LAG connected to a WLC, how will client traffic be impacted?

Answer 27

All client traffic will still be forwarded. Just because the LAG has port failures, traffic doesn’t get sent intermittently or not at all. As long as one port in the LAG is still functional, traffic can still traverse it