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1.Why buy a Cisco WLAN solution for its security features?
A: It transmits around physical barriers.
B: It prevents corruption of data by radio interference.
C: It recovers data lost during transmission between buildings.
D: It protects confidential or proprietary data transmitted over WLAN via radio signal.
Correct Answers: D

2.What are three available sources of inline power for the Access Point (AP)? (Choose three.)
A:7500 series routers
B:inline power injector
C:standard power cable
D:inline power patch panel
E:Cisco 642-414 Catalyst 3550 switch
Correct Answers: A, B, C

3.The Service Set Identifier (SSID) was a common method of securing early WLANs. Which two describe the SSID? (Choose two.)
A:40-bit keys
B:one-way authentication
C:medium level of security
D:network naming scheme for RF networks
E:must match on both client and Access Point (AP)
Correct Answers: D, E

4.What are three business drivers for using a Cisco 642-964 WLAN? (Choose three.)
A:the need to increase the number of network users
B:the need to move networked work resources frequently
C:the need to increase productivity with employee mobility
D:the need to use older buildings, leased space, or temporary sites with wiring issues
Correct Answers: B, C, D

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1. What are two benefits of using VTP in a switching environment? (Choose two.)
A. It allows switches to read frame tags.
B. It allows ports to be assigned to VLANs automatically.
C. It maintains VLAN consistency across a switched network.
D. It allows frames from multiple VLANs to use a single interface.
E. It allows VLAN information to be automatically propagated throughout the switching environment.
Answer: CE

2. Which two statements are true about the command ip route 172.16.3.0 255.255.255.0 192.168.2.4? (Choose two.)
A. It establishes a static route to the 172.16.3.0 network.
B. It establishes a static route to the 192.168.2.0 network.
C. It configures the router to send any traffic for an unknown destination to the 172.16.3.0 network.
D. It configures the router to send any traffic for an unknown destination out the interface with the address 192.168.2.4.
E. It uses the default administrative distance.
F. It is a route that would be used last if other routes to the same destination exist.
Answer: AE

3. What are two advantages of Layer 2 Ethernet switches over hubs? (Choose two.)
A. decreasing the number of collision domains
B. filtering frames based on MAC addresses
C. allowing simultaneous frame transmissions
D. increasing the size of broadcast domains
E. increasing the maximum length of UTP cabling between devices
Answer: BC

4. Which two topologies are using the correct type of twisted-pair cables? (Choose two.)
A. 
B. 
C. 
D. 
E. 
Answer: DE

5. Which two values are used by Spanning Tree Protocol to elect a root bridge? (Choose two.)
A. amount of RAM
B. bridge priority
C. IOS version
D. IP address
E. MAC address
F. speed of the links
Answer: BE

6. A network administrator changes the configuration register to 0×2142 and reboots the router. What are two results of making this change? (Choose two.)
A. The IOS image will be ignored.
B. The router will prompt to enter initial configuration mode.
C. The router will boot to ROM.
D. Any configuration entries in NVRAM will be ignored.
E. The configuration in flash memory will be booted.
Answer: BD

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Exam  :  Cisco 642-812
Title    :  BCMSN - Building Converged Cisco Multilayer Switched Networks

1. Which three WLAN statements are true? (Choose three.)
A. A lightweight AP receives control and configuration from a WLAN controller to which it is associated.
B. A WLAN client that is operating in half-duplex mode will delay all clients in that WLAN.
C. Ad hoc mode allows mobile clients to connect directly without an intermediate AP.
D. Another term for infrastructure mode is independent service set (IBSS).
E. The Aironet 1230 access point is an example of an access point that operates solely as a lightweight access point.
F. WLANs are designed to share the medium and can easily handle an increased demand of channel contention.
Answer: ABC

2. Which statement is true about IP telephony calls?
A. A Voice over IP (VoIP) packet consists of the voice payload, IP header, TCP header, RTP header, and Layer 2 link header.
B. The voice carrier stream uses H.323 to set up, maintain, and tear down call endpoints.
C. Call control signaling uses Real-Time Transport Protocol (RTP) packets that contain actual voice samples.
D. The sum of bandwidth necessary for each major application, including voice, video, and data, should not exceed 75 percent of the total available bandwidth for each link.
Answer: D

3. Which statement about the Lightweight Access Point Protocol (LWAPP) is true?
A. LWAPP encrypts control traffic between the AP and the controller.
B. LWAPP encrypts user traffic with a x.509 certificate using AES-CCMP.
C. LWAPP encrypts both control traffic and user data.
D. When set to Layer 3, LWAPP uses a proprietary protocol to communicate with the Cisco Aironet APs.
Answer: A

4. Which statement is true about RSTP topology changes?
A. Any change in the state of the port generates a TC BPDU.
B. Only nonedge ports moving to the forwarding state generate a TC BPDU.
C. If either an edge port or a nonedge port moves to a block state, then a TC BPDU is generated.
D. Only nonedge ports moving to the blocking state generate a TC BPDU.
E. Any loss of connectivity generates a TC BPDU.
Answer: B

5. Which issue or set of issues does the Lightweight Access Point Protocol (LWAPP) address?
A. reduction of processing in wireless controllers
B. distributed approach to authentication, encryption, and policy enforcement
C. provides security by blocking communication between access points and wireless clients
D. access point discovery, information exchange, and configuration
Answer: D

6. Which description correctly describes a MAC address flooding attack?
A. The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the destination address found in the Layer 2 frames sent by the valid network device.
B. The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the source address found in the Layer 2 frames sent by the valid network device.
C. The attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.
D. The attacking device spoofs a source MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.
E. Frames with unique, invalid destination MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space, and traffic is subsequently flooded out all ports.
F. Frames with unique, invalid source MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space, and traffic is subsequently flooded out all ports.
Answer: F

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Other ccnp exam: 642-901 642-825 642-845