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

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Question:1 You work as a network engineer at certways.com, examine the following options carefully. What does a Cisco IP Phone contain to allow it to pass both voice and data packets? A. An internal four-port switch B. An internal Ethernet hub C. An internal three-port switch D. An internal two-port switch

Answer: C Question:2 A multilayer switch is configured as follows: interface fastethernet 1/1 no switchport ip address 192.168.199.3 255.255.255.0 standby 1 ip 192.168.199.2 Which IP address will be used by a client PC as its default gateway? A. 192.168.199.3 B. 192.168.199.2 C. 192.168.199.1 D. Any of these answers is correct Answer: B Question:3 Which one of the following hierarchical layers should end-user PCs be connected into? A. Core layer B. Distribution layer C. Access layer D. Common layer

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Answer: C Question:4 An IP Phone should mark all incoming traffic from an attached PC to have CoS 1. Finish the following switch command to make that happen: switchport priority extend __________ A. overwrite 1 B. untrusted C. cos 1 D. 1

Answer: C Question:5 Which feature can be used to reduce the amount of time needed to rebuild the routing information after a supervisor module failure? A. SSO B. NSF C. NFS D. RPR+

Answer: B Question:6 Port security is being used to control access to a switch port. Which command will place the port into the errdisable state if an unauthorized station connects? A. switchport port-security violation errdisable B. switchport port-security violation protect C. switchport port-security violation restrict D. switchport port-security violation shutdown

Answer: D Question:7 To protect against first-hop router failure, four protocols were developed to ensure IP routing redundancy. What are they? (Choose four.) A. HSRP B. IRDP C. ICMP D. VRRP E. MSTP F. GLBP Answer: A, B, D, F Question:8 Which method is used to prevent a VLAN hopping attack? A. Avoid using EtherChannel link bundling B. Use VTP throughout the network C. Prune the native VLAN off a trunk link D. Set the native VLAN to the user access VLAN

Answer: C Question:9 The users in a department are using various host platforms, some old and some new. All of them have been approved with a user ID in a RADIUS server database. Which feature could be used to restrict access to the switch ports in the building? A. Port-based authentication B. AAA authentication C. Port security D. AAA authorization

Answer: C Question:10 PVLAN is an important technology, every network technician know it clearly. A switch has been configured with PVLANs. With what type of PVLAN port should the default gateway be configured? A. Primary B. Promiscuous C. Isolated D. Community

Answer: B Question:11 Observe the following situation carefully, then answer the question. A wireless access point transmits at 100 mW or 20 dBm. A cable with a loss of 5 dB connects the AP to its antenn

a. The antenna is a dish model with a gain of 22. The receiving access point is located 1 mile away and uses an identical antenna and cable. What is the EIRP value?

A. 74 dBm B. 0 dBm C. 37 dBm D. 20 dBm

Answer: C Question:12 If WPA or WPA2 is used as a wireless security suite, for the following items ,which one represents a feature that is not supplied in other wireless security methods? A. Session time limits B. Packet authentication C. Virus mitigation D. Strong password policy

Answer: B Question:13 For which one would a wireless AP with a built-in dipole antenna be best suited on the basis of its capability to cover the area? A. Rooms located down a long hallway B. A four-story office building C. An office made up of cubicles D. Building-to-building link

Answer: C Question:14 When you are designing the AP channel layout for an area, which one is the most important consideration? A. Clients are grouped into common channels B. The number of channels is conserved C. Adjacent APs use nonoverlapping channels D. APs in different areas use different channels

Answer: C Question:15 Which three characteristics are correct about voice traffic in the campus network? (Choose three.) A. bursty B. delay sensitive C. UDP priority D. drop sensitive

Answer: B, C, D Question:16 Which one represents the correct combination of frequency band and IEEE standard? A. 2.4 GHz, 802.11g B. 5 GHz, 802.11b C. 5 GHz, 802.11g D. 2.4 GHz, 802.11a

Answer: A Question:17 Efficient and reliable signaling procedures are required for call control. Particularly for call setups and handoffs. What are three examples of call control signaling? (Choose three.) A. SIP B. RTP C. MGCP D. H.323 Answer: A, C, D Question:18 Assume that a lightweight AP is used for supporting wireless clients. Which answer lists the device path that traffic must take when passing from one wireless client to another? A. Through the controller only B. Through the AP and its controller C. Through the AP only D. None of these answers is correct; traffic can go directly over the air

Answer: B Question:19 When a lightweight AP boots up, which source does it learn the WLC addresses from? A. Multicast announcement B. CDP C. DHCP option 43 D. Router's IP helper-address

Answer: C Question:20 Which statement is correct about the use of the virtual interface on a WLC? A. Used to relay DHCP messages B. Used to communicate with LAPs C. Used to bring up LWAPP tunnels D. Used to extend into a wireless client VLAN

Answer: A Question:21 Study the following exhibit carefully, what is the reason that users from VLAN 100 can??t ping users on VLAN 200?

A. The native VLAN is wrong. B. Trunking needs to be enabled on Fa0/1. C. VLAN 1 needs the no shutdown command. D. IP routing needs to be enabled on the switch.

Answer: B Question:22 Observe the following exhibit carefully. Tom is a network technician of his company. He has configured the link between P4S-SW1 and P4S-SW2 as a trunk, but the trunk failed to build connectivity between the switches. According to the configurations and the error messages received on the console of P4S-SW1, can you tell me why?

A. The two ends of the trunk allow different VLANs on the trunk. B. The two ends of the trunk have different duplex settings. C. The two ends of the trunk have different native VLAN configuration. D. The two ends of the trunk have different EtherChannel configuration.

Answer: C Question:23 Based on the following exhibit, what will be the result of the configuration applied on switch P4S-SW1 if VLAN 21 does not exist before typing the commands?

A. A new VLAN 21 is created and port 0/8 is assigned to that VLAN. B. Configuration command vlan database should be used first to create the VLAN 21. C. A new VLAN 21 is created, but no ports are assigned to that VLAN. D. No VLAN 21 is created and no ports are assigned to that VLAN.

Answer: A Question:24 certways uses IGMP version 2 in their IP multicast network. How is the designated querier elected in IGMPv2? A. The host with the lowest MAC address on a segment is designated. B. The host that responds first to the election query is designated. C. The router with the lowest IP address on a subnet is designated. D. The first router to appear on a subnet is designated.

Answer: C Question:25 Which three statements correctly describe CEF? (Choose three.) A. The FIB table is derived from the IP routing table. B. The adjacency table is derived from the ARP table. C. When the adjacency table is full, a CEF TCAM table entry points to the Layer 3 engine to

redirect the adjacency. D. The FIB lookup is based on the Layer 3 destination address prefix (shortest match).

Answer: A, B, C Question:26 If a port on a point-to-point link does not receive traffic while Layer 1 status is up, which optional feature of an Ethernet switch will disable this port? A. Fast Link Pulse bursts B. Link Control Word C. Loop Guard D. UDLD aggressive mode

Answer: D Question:27 According to the following exhibit, which two descriptions are true about the routes to be redistributed into OSPF? (Choose two.)

A. The network 192.168.1.0 will be allowed and assigned a metric of 100. B. The network 10.0.10.0/24 will be allowed and assigned a metric of 200. C. The network 192.168.1.0 will be allowed and assigned a metric of 200. D. The network 172.16.0.0/16 will be allowed and assigned a metric of 200.

Answer: A, D Question:28 You are a network technician of your company. Study the following exhibit carefully, Router F is advertising the 172.16.0.0 network to Router B via EBGP. Which two configuration options will you use separately to make sure that the path to the 172.16.0.0 network is available to all of Router B's IBGP peers? (Choose two.)

A. Configure next-hop-self on router B. B. Configure next-hop-self on all IBGP peers. C. Configure a network statement for the 172.16.0.0 network on router B. D. Redistribute BGP into the IGP routing protocol.

Answer: A, D Question:29 On the basis of the following exhibit, can you tell me which interoperability technique implemented on the dual-stack routers will permit connectivity between IPv6 sites across automatic created tunnels by use of the 2002::/16 prefix?

A. GRE tunnel B. Dual Stack C. 6to4 tunnel D. ISATAP tunnel

Answer: C Question:30 Refer to the exhibit. Three different wireless groups of users are permitted to access the wireless LAN. Which security policy should be implemented for the users in the Guest group?

A. open authentication with WEP plus MAC authentication B. static WEP and MAC authentication C. primary SSID with open or no WEP authentication D. LEAP authentication

Answer: C Question:31 Which three statements best describe routed ports on a multilayer switch? (Choose three)

A. A routed port is only associated with one VLAN. B. A routed port will take an IP address assignment. C. A routed port can be configured with routing protocols. D. A routed port is a physical interface on the multilayer switch.

Answer: B, C, D Question:32 How to differ the Autonomous WLAN solution from the Lightweight WLAN solution? (Choose two.) A. CiscoWorks Wireless LAN Solution Engine can be used for management with the Lightweight

WLAN Solution. B. CiscoWorks Wireless LAN Solution Engine can be used for management with the Autonomous

WLAN Solution. C. Cisco Wireless LAN Controller is used to configure the access points in the Autonomous

WLAN solution. D. Cisco Wireless LAN Controller is used to configure the access points in the Lightweight WLAN

solution.

Answer: B, D Question:33 A workstation has a Link-local IPv6 address FE80::A1:56C2:1102 and is setting a global unicast IPv6 address via stateless auto-configuration. The router connected to the LAN has a global IPv6 address of 2001:AAAA:BBBB:CCCC:DDDD::1/64. What will your workstation set its IPv6 address to once it detects the router advertisements? A. 2001:AAAA:BBBB:CCCC:DDDD:A1:56C2:1102 B. 2001:AAAA:BBBB::A1:56C2:1102 C. 2001:AAAA:BBBB:FE80::A1:56C2:1102 D. 2001:AAAA:BBBB:CCCC:FE80::A1:56C2:1102

Answer: D

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