Modules 7-9 & 12-16 Final Study Guide
In the split MAC architecture for CAPWAP, which of the following are the responsibility of the WLC? (Choose four.)
- Authentication - Association and re-association of roaming clients - Termination of 802.11 traffic on a wired interface - Frame translation to other protocols
A laptop cannot connect to a wireless access point. Which two troubleshooting steps should be taken first? (Choose two.)
- Ensure that the wireless SSID is chosen - Ensure that the wireless NIC is enabled
Which of the following encryption methods uses CCMP to recognize if the encrypted and non-encrypted bits have been altered?
AES
What is an advantage of using dynamic routing protocols instead of static routing?
Ability to actively search for a new roots if the current path becomes unavailable
Which of the following components are integrated in a wireless home router? (Choose three.)
Access Point Switch Router
What is the term for an AP that does not send a beacon, but waits for clients to send probes?
Active
Which wireless topology mode is used by two devices to connect in a peer-to-peer network?
Ad hoc
Which wireless network topology is being configured by a technician who is installing a keyboard, a mouse, and headphones, each of which uses Bluetooth?
Ad hoc mode
Which value represents the "trustworthiness" of a route and is used to determine which route to install into the routing table when there are multiple routes toward the same destination?
Administrative distance
What Wi-Fi management frame is regularly broadcast by APs to announce their presence?
Beacon
Which of the following is an IEEE 802.15 WPAN standard that uses a device-pairing process to communicate?
Bluetooth
A user has just purchased a generic home router and would like to secure it. What should be done to help secure the wireless home router?
Change the default administrator password
Which packet-forwarding method does a router use to make switching decisions when it is using a forwarding information base and an adjacency table?
Cisco Express Forwarding
In the context of mobile devices, what does the term tethering involve?
Connecting a mobile device to another mobile device or computer to share a network connection.
What is a difference between autonomous APs that operate in a home environment and controller-based APs that operate in a corporate environment?
Controller-based APs can be automatically configured and managed by a WLAN controller
Which of the following modulation techniques spreads a signal over a larger frequency band?
DSSS
Which two methods can be used to identify the next hop in a static route? (Choose two.)
Destination IP address Exit interface
A user is configuring a wireless access point and wants to prevent any neighbors from discovering the network. What action does the user need to take?
Disable SSID broadcast
Which type of wireless topology is created when two or more Basic Service Sets are interconnected by Ethernet?
ESS
Which two roles are typically performed by a wireless router that is used in a home or small business? (Choose two.)
Ethernet switch & access point
Which of the following modulation techniques rapidly switches a signal among frequency channels?
FHSS
True or False: A rogue AP is a misconfigured AP connected to the network and a possible source of DoS attacks.
False
True or False: DTLS is enabled by default on the control and data CAPWAP tunnels.
False
True or False: Laptops that do not have an integrated wireless NIC can only be attached to the network through a wired connection.
False
True or False: When you need to expand the coverage of a small network, the best solution is to use a range extender.
False
True or False? A default route can only be a static route.
False
Which feature on a Cisco router permits the forwarding of traffic for which there is no specific route?
Gateway of last resort
What IP versions does CAPWAP support?
IPv4 by default, but can configure IPv6
Which standards organization is responsible for allocating radio frequencies?
ITU-R
Which WLC tab would a network administrator typically use to see a summary view of the most heavily used WLANs including the number of clients using a particular WLAN?
Monitor
Which characteristic describes a wireless client operating in active mode?
Must know the SSID to connect to an AP.
In setting up a small office network, the network administrator decides to assign private IP addresses dynamically to workstations and mobile devices. Which feature must be enabled on the company router in order for office devices to access the internet?
NAT
Which of the following modulation techniques is used in the new 802.11ax standard?
OFDMA
Which two route sources have the ability to automatically discover a new best path when there is a change in the topology? (Choose two.)
OSPF & EIGRP
Which of the following antennas provide 360 degrees of coverage?
Omnidirectional
Which of the following authentication methods does not use a password shared between the wireless client and the AP?
Open
What is the term for an AP that openly advertises its service periodically?
Passive
When a wireless network in a small office is being set up, which type of IP addressing is typically used on the networked devices?
Private
Which encryption method is used by the original 802.11 specification?
RC4
Which of the following is most likely NOT the source of a wireless DoS attack?
Rogue AP
Which routing table principle is not correct? Every router makes its decision alone, based on the information it has in its own routing table.
Routing information about a path from one network to another also provides routing information about the reverse, or return, path.
What table does a router use to determine how to forward an IP packet?
Routing table
Which protocol could be used by a company to monitor devices such as a wireless LAN controller (WLC)?
SNMP
Which parameter is commonly used to identify a wireless network name when a home wireless AP is being configured?
SSID
A network administrator configures a static route for the same destination network that was learned automatically by the router using OSPF. Which route will be installed and why?
Static route because it has a lower administrative distance.
What are two reasons why an administrator might choose to use static routing rather than dynamic routing? (Choose two.)
Static routing uses less router processing and bandwidth Static routing is more secure
A customer installs a wireless access point at home in the closet next to the kitchen. The customer mentions that the wireless communication performance seems degraded when the cordless phone or the microwave oven is in use. What is the possible reason for this degradation?
The wireless signal is in the same radio frequency range as the household devices are in.
If a router needs to send an ARP Request for the IPv4 address in one of its route entries, this means the packet will be forwarded:
To a next-hop router
Why would a technician configure a passphrase for a WLAN on a wireless router?
To configure wireless client authentication.
A network administrator configures a router by the command ip route 0.0.0.0 0.0.0.0 209.165.200.226. What is the purpose of this command?
To provide a route to forward packets for which there is no route in the routing table
Which of the following statements are true about modes of operation for a FlexConnect AP? (Choose two.)
- In standalone mode, the WLC is unreachable and the AP switches local traffic and performs client authentication locally - In connect mode, the WLC is unreachable and performs all its CAPWAP functions
If a router needs to send an ARP Request for the destination IPv4 address of the packet, this means the packet will be forwarded:
To the device with the destination IPv4 address of the packet
True or False: An ESS is created when two or more BSSs need to be joined to support roaming clients
True
How is the destination network in an IPv6 static route identified?
Using an IPv6 prefix and prefix length
Which IPv4 static route statement is true?
Using the exit interface only is common in a point-to-point configuration
Which of the following wireless networks are specified in the IEEE 802.11 standards for the 2.4 GHz and 5 GHz radio frequencies?
WLAN
Which of the following authentication methods has the user enter a pre-shared password? (Choose two)
WPA Personal & WPA2 Personal
Which method of wireless authentication is currently considered to be the strongest?
WPA2
Which of the following wireless networks typically uses lower powered transmitters for short ranges?
WPAN
In the split MAC architecture for CAPWAP, which of the following are the responsibility of the AP? (Choose four.)
- Packet acknowledgements and retransmissions - Beacons and probe responses - MAC layer data encryption and decryption - Frame queueing and packet prioritization
Which three advantages are provided by static routing? (Choose three.)
- The path a static route uses to send data is known - Static routing typically uses less network bandwidth and fewer CPU operations than dynamic routing does - Static routing does not advertise over the network, thus providing better security
How many address fields are in the 802.11 wireless frame?
4
Which protocol and port numbers are used by both IPv4 and IPv6 CAPWAP tunnels? (Choose two.)
5246 & 5247 UDP
Which 802.11 standards exclusively use the 5 GHz radio frequency? (Choose 2)
802.11a & 802.11ac
Which IEEE standard operates at wireless frequencies in both the 5 GHz and 2.4 GHz ranges?
802.11n
What address and prefix length is used when configuring an IPv6 default static route?
::/0
When configuring a Cisco 3500 series wireless LAN controller (WLC) for a WPA2 Enterprise WLAN, what has to be created on the WLC before creating the new WLAN?
A VLAN for the wireless network.
What are two common types of static routes in routing tables? (Choose two)
A default static route A static route to a specific network
What is a DHCP scope as it relates to a WLAN configured on the WLC controller?
A pool of IP addresses for WLAN clients.
What are two functions of a router? (Choose two.)
A router connects multiple IP networks it determines the best path to send packets
What type of routing is typically used with a stub network?
static routes
What are the best ways to secure WLANs? (Choose two.)
Authentication & Encryption
Which of the following is a standalone device, like a home router, where the entire WLAN configuration resides on the device?
Autonomous AP
Which packet forwarding method is used by default on Cisco routers?
Cisco Express Forwarding
What type of attack is an "evil twin AP" attack?
MITM
What functionality is required on routers to provide remote workers with VoIP and videoconferencing capabilities?
QoS
Which type of telecommunication technology is used to provide Internet access to vessels at sea?
Satellite
Users on an IEEE 802.11n network are complaining of slow speeds. The network administrator checks the AP and verifies it is operating properly. What can be done to improve the wireless performance in the network?
Split the wireless traffic between the 802.11n 2.4GHz band and the 5GHz band
What type of network is accessed by a single route and the router has only one neighbor?
Stub network
A wireless router is displaying the IP address of 192.168.0.1. What could this mean?
The wireless router still has the factory default IP address
Which type of static route creates a gateway of last resort?
default static route
What is used to determine the minimum number of far-left bits that must match between the prefix in the route entry and the destination IP address.
prefix length in the routing table entry
When a router learns that multiple paths are available to a destination network from the same routing protocol, which factor is considered by a router to choose the best path to forward a packet?
the lowest metric
What are two functions of dynamic routing protocols? (Choose two.)
to discover the network to maintain routing tables
If three 802.11b access points need to be deployed in close proximity, which three frequency channels should be used? (Choose three.)
1, 6, & 11
How many channels are available for the 2.4 GHz band in Europe?
13
What UDP ports and IP protocols are used by CAPWAP for IPv6? (Choose three.)
136 5246 5247
What UDP ports and IP protocols are used by CAPWAP for IPv4? (Choose three.)
17 5246 5247
How many channels are available for the 5 GHz band?
24
Which statement describes an autonomous access point?
It is a standalone access point.
What action will a router take on a packet with a destination IP address that is on a remote network?
It will forward the packet to a next-hop router
Which two route source codes are automatically created within a routing table whenever a router interface is configured with an IP address and activated? (Choose two.)
L & C
Which route entry would be used for a packet with a destination IP address that matches an IP address of one of the router interfaces?
L for Local
Which feature of 802.11n wireless access points allows them to transmit data at faster speeds than previous versions of 802.11 Wi-Fi standards did?
MIMO
The output of the show ip route command contains the following entry: S 10.2.0.0 [1/0] via 172.16.2.2. What value is indicated by the 1 in the [1/0] portion of the output?
administrative distance
What metric is used by OSPF to determine the best path?
cost
Which type of route would typically be used on a border router so that devices inside the company could access the Internet?
default
Which of the following routes may be found in a routing table? (Choose all that apply.)
directly connected networks static routes dynamic routing protocol routes default route
Which type of routing automatically adapts to topology changes?
dynamic routing protocols
What term is used to describe routing over two or more paths to a destination with equal cost metrics?
equal cost load balancing