Question 1

What are the three RSTP port states? (Choose three.)

Accepted Answer

A)  Initializing 
B)  Blocking 
C)  Learning 
D)  Listening 
E)  Forwarding
F) Discarding

Question 2

A network engineer is preparing for an office site survey with a height of 2.5 meters. Which three components are recommended to complete the survey? (Choose three.)

Accepted Answer

A)  Use a battery pack to power APs. 
B)  Use a drawing of the office space to draw AP and client placements. 
C)  Use DoS attack on APs while measuring the throughput. 
D)  Use APs with directional antennas. 
E)  Use APs with external antennas.
F) Use APs with built-in antennas.

Question 3

Routers R1 and R2 are configured for HSRP as shown below: Router R1: interface ethernet 0 ip address 20.6.2.1 255.255.255.0 standby 35 ip 20.6.2.21 standby 35 priority 100 interface ethernet 1 ip address 20.6.1.1.2 255.255.255.0 standby 34 ip 20.6.1.21 Router R2: ip address 20.6.2.2 255.255.255.0 ip address 20.6.1.1.1 255.255.255.0 standby 34 priority 100 You have configured the routers R1 & R2 with HSRP. While debugging router R2 you notice very frequent HSRP group state transitions. What is the most likely cause of this?

Accepted Answer

A)  physical layer issues 
B)  no spanning tree loops 
C)  use of non-default HSRP timers 
D)  failure to set the command standby 35 preempt

Question 4

Which feature is supported with the PPPoE client?

Accepted Answer

A)  DMVPN 
B)  QoS on the dialer interface 
C)  MLPPP on the interface 
D)  Dial-on-demand

Question 5

An engineer has configured guest anchoring for a newly created SSID however, the mobility tunnels are not up, and EPING is failing from the foreign WLC to the anchor WLC. Which traffic flow must be allowed at the firewall to enable the communication?

Accepted Answer

A)  UDP port 16666 
B)  IP protocol 97 
C)  UDP port 97 
D)  TCP port 97

Question 6

A customer asks an engineer to explain the concept of mobility domains and mobility groups. Which statement does the engineer respond with?

Accepted Answer

A)  A mobility group does not constrain the distribution of security context of a client and also does not constrain AP fail-over between controllers when the WLC are in the same mobility domain. 
B)  If WLCs are in the same mobility domain, they communicate with each other but, if an anchor WLC is present, it must be in the same mobility domain for communication to be possible. 
C)  If WLCs are in the same mobility domain, they communicate with each other. Mobility groups constrain the distribution of security context of a client and also constrain AP fail-over between controllers. 
D)  WLCs do not need to be in the same mobility domain to communicate with each other. Mobility groups constrain the distribution of security context of a client and also constrain AP fail-over between controllers.

Question 7

A customer has noticed that Client Band Select is enabled and no clients are utilizing the 5 GHz band. Which three parameters must be met to ensure that wireless clients use the 5 GHz band? (Choose three.)

Accepted Answer

A)  Ensure that channel bonding is enabled on the WLAN. 
B)  Ensure that the co-channel interference has not exceeded ?85 dBm. 
C)  Ensure that the UNII-2 extended channels are enabled on the 802.11a radios. 
D)  Ensure that the client is receiving RSSI above the minimum band select RSSI threshold. 
E)  Ensure that the client is dual-band capable.
F) Ensure that the WLAN has 802.11a enabled.

Question 8

An engineer has performed a predictive site survey for high-speed data and voice in an indoor office. What is the recommended data rate with ?67 dBm signal level for optimal VoWLAN design?

Accepted Answer

A)  6 Mbps on 802.11 bgn 
B)  24 Mbps on 802.11 bgn 
C)  12 Mbps on 802.11 an 
D)  24 Mbps on 802.11 an

Question 9

An engineer must decide the cell overlap for a wireless voice deployment. Which Cisco measurement recommendation should be considered?

Accepted Answer

A)  The edge of the cell should be ?67 dBm. 
B)  The edge of the cell should be below 35 RSSI. 
C)  The measurement should be done on the 2.4-GHz band. 
D)  One AP should be deployed per 3000 square feet.

Question 10

A network administrator uses GRE over IPSec to connect two branches together via VPN tunnel. Which one of the following is the reason for using GRE over IPSec?

Accepted Answer

A)  GRE over IPSec provides better QoS mechanism and is faster than other WAN technologies 
B)  GRE over IPSec decreases the overhead of the header. 
C)  GRE supports use of routing protocol, while IPSec supports encryption. 
D)  GRE supports encryption, while IPSec supports use of routing protocol.

Question 11

Which of the following statements best describes the purpose of ARP with respect to CEF?

Accepted Answer

A)  ARP is used to build the FIB. 
B)  ARP is used to reindex the routing table. 
C)  ARP is used to build the adjacency table. 
D)  ARP is used to decrease the amount of time spent searching for an entry within a routing table.

Question 12

A network administrator of a global organization is collapsing all controllers to a single cluster located in central Europe. Which concern must addressed?

Accepted Answer

A)  Some channels may not be available consistently across the organization. 
B)  Different RF policies per office are not available in this configuration. 
C)  Syslog must be configured to the time-zone of the NMS platform. 
D)  Centralized controllers cannot uniformly authenticate global users.

Question 13

A customer has determined that aesthetics is a primary concern for their upcoming guest deployment. Which design consideration can be leveraged to address this concern?

Accepted Answer

A)  Paint the access point to cover the LED from being noticeable. 
B)  Use enclosures to hide the wireless infrastructure in the surrounding environment. 
C)  Use AIR-AP-BRACKET-1 to allow for greater mounting locations 
D)  Deploy environmentally friendly cabling components to blend into the environment.

Question 14

Which CLI command does an engineer use to validate that the redundancy peer of a Stateful Switchover pair of controllers is up and connected?

Accepted Answer

A)  rping 
B)  ping 
C)  eping 
D)  mping

Question 15

A company wants to replace its existing PBX system with a new VoIP System that will include wireless IP phones. The CIO has concerns about whether the company's existing wireless network can support the new system. Which tool in Cisco Prime can help ensure that the current network will support the new phone system?

Accepted Answer

A)  Location Readiness 
B)  Site Calibration 
C)  Map Editor 
D)  Voice Readiness

Question 16

An engineer must speed up the reauthentication delays that are being experienced on the wireless infrastructure by deploying a key-caching mechanism. Which mechanism must be configured?

Accepted Answer

A)  PEAP 
B)  FT 
C)  PMF 
D)  GTK-randomization

Question 17

An engineer performs a Layer 1 survey by using Metageek Chanalyzer only on the current operating channel. Which operating mode is configured for a Cisco CleanAir AP?

Accepted Answer

A)  monitor 
B)  local 
C)  sniffer 
D)  SE-connect

Question 18

Refer to the exhibit. An enterprise is using wireless as the main network connectivity for clients. To ensure service continuity, a pair of controllers will be installed in a datacenter. An engineer is designing SSO on the pair of controllers. What needs to be included in the design to avoid having the secondary controller go into maintenance mode?

Accepted Answer

A)  The redundancy port must be the same subnet as the redundancy mgmt. 
B)  The keep alive timer is too low, which causes synchronization problems. 
C)  The connection between the redundancy ports is missing. 
D)  The Global Configuration of SSO is set to Disabled on the controller.

Question 19

You made changes to a VLAN, but the changes were not propagated to the other switches in the VTP domain. You enter a show vtp command at the switch where the changes were made, which displays the following output:  What should you do to solve this problem?

Accepted Answer

A)  Disable VTP pruning. 
B)  Change the VTP operating mode to server. 
C)  Upgrade the VTP version to version 2. 
D)  Upgrade the VTP version to version 3.

Question 20

An engineer must perform an assessment of a customer LAN for a future IEEE 802.11ac Wave 2 wireless deployment. All access switches are Fast Ethernet-capable only, and the wired infrastructure between existing APs and access switches is based on the CAT 6A standard. Which two actions provide maximum support of Cisco 3800 Series access points? (Choose two.)

Accepted Answer

A)  Replace the existing switches with mGig switches. 
B)  Ensure that cable distances between access switches and APs are not longer that 55 meters. 
C)  Replace the existing switches with gigabit switches with 10 G uplinks. 
D)  Ensure that cable distance between access switches and APs are not longer than 100 meters. 
E)  Replace the existing wiring infrastructure with the CAT-7E wiring standard.

Exam 11: Designing Cisco Enterprise Wireless Networks (300-425 ENWLSD)