testinside Cisco CCNP Bcmsn 642-812 Exam
testinside Cisco CCNP Cisco 642-812 Exam
Cisco 642-812 Exam
Practice Exam 642-812
Product Description:
Exam Number/Code: 642-812
Exam Name: CCNP
“CCNP ’s Building Cisco Multilayer Switched Networks”, also known as 642-812 exam, is a Cisco certification.
Preparing for the 642-812 exam? Searching 642-812 Test Questions, 642-812 Practice Exam, 642-812 Dumps?
With the complete collection of questions and answers, TestInside has assembled to take you through 281 questions to your 642-812 Exam preparation. In the 642-812 exam resources, you will cover every field and category in CCNP helping to ready you for your successful Cisco Certification.
Building Cisco Multilayer Switched Networks
Test Q&A Updated Price
642-812 281: Q&A 2008-6-20 USD: 69.00
1. Which three statements about the Multiple Spanning Tree (MST) protocol (IEEE 802.1s) are true? (Choose
three.)
A. An MST region is a group of MST switches that appear as a single virtual bridge to adjacent CST and MST
regions.
B. All switches in an MST region, except distribution layer switches, should have their priority lowered from the
default value 32768.
C. All switches in the same MST region must have the same VLAN-to-instance mapping, but different
configuration revision numbers.
D. Enabling MST with the spanning-tree mode mst global configuration command also enables RSTP.
E. To verify the MST configuration, the show pending command can be used in MST configuration mode.
F. When RSTP and MSTP are configured, UplinkFast and BackboneFast must also be enabled.
Answer: ADE
2. A client is searching for an access point (AP). What is the correct process order that the client and access point
go through to create a connection?
A. probe request/response, authentication request/response, association request/response
B. association request/response, authentication request/response, probe request/response
C. probe request/response, association request/response, authentication request/response
D. association request/response, probe request/response, authentication request/response
Answer: A ‘
3. Which three features are part of the Cisco Compatible Extensions program? (Choose three.)
A. security
B. routing and switching
C. VLAN and QoS
D. analog and digital voice
E. accounting
F. mobility
Answer: ACF
5. What are two methods of mitigating MAC address flooding attacks? (Choose two.)
A. Place unused ports in a common VLAN.
B. Implement private VLANs.
C. Implement DHCP snooping.
D. Implement port security.
E. Implement VLAN access maps.
Answer: DE
6. 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
8. In the use of 802.1X access control, which three protocols are allowed through the switch port before
authentication takes place? (Choose three.)
A. STP
B. CDP
C. EAP MD5
D. TACACS+
E. EAP-over-LAN
F. protocols not filtered by an ACL
Answer: ABE
12. Which two Lightweight Access Point Protocol (LWAPP) statements are true? (Choose two.)
A. Control traffic is encapsulated in UDP packets with a source port of 1024 and a destination port of 12223.
B. Control traffic is encapsulated in TCP packets with a source port of 1024 and a destination port of 12223.
C. Data traffic is encapsulated in UDP packets with a source port of 1024 and a destination port of 12223.
D. Data traffic is encapsulated in TCP packets with a source port of 1024 and destination port of 12223.
E. Layer 3 LWAPP is a UDP / IP frame that requires a Cisco Aironet AP to obtain an IP address using DHCP.
F. LWAPP is a proprietary protocol, and because of its very high overhead it is not widely adopted .
Answer: AE
13. When an attacker is using switch spoofing to perform VLAN hopping, how is the attacker able to gather
information?
A. The attacking station uses DTP to negotiate trunking with a switch port and captures all traffic that is allowed
on the trunk
B. The attacking station tags itself with all usable VLANs to capture data that is passed through the switch,
regardless of the VLAN to which the data belongs.
C. The attacking station will generate frames with two 802.1Q headers to cause the switch to forward the frames
to a VLAN that would be inaccessible to the attacker through legitimate means.
D. The attacking station uses VTP to collect VLAN information that is sent out and then tags itself with the
domain information in order to capture the data.
Answer: A
19. What is the default VTP advertisement for subset advertisements in Catalyst switches that are in server or
client mode?
A. 5 seconds
B. 10 seconds
C. 30 seconds
D. 1 minute
E. 5 minutes
Answer: E
21. Which three statements are correct with regard to the IEEE 802.1Q standard? (Choose three.)
A. the packet is encapsulated with a 26 byte header and a 4 byte FCS
B. the IEEE 802.1Q frame format adds a 4 byte field to a Ethernet frame
C. the IEEE 802.1Q frame retains the original MAC destination address
D. the IEEE 802.1Q frame uses multicast destination of 0×01-00-0c-00-00
E. protocol uses point-to-point connectivity
F. protocol uses point-to-multipoint connectivity
Answer: BCE
22. What action should a network administrator take to enable VTP pruning on an entire management domain?
A. enable VTP pruning on any client switch in the domain
B. enable VTP pruning on every switch in the domain
C. enable VTP pruning on any switch in the management domain
D. enable VTP pruning on a VTP server in the management domain
Answer: D
25. What are three possible router states of HSRP routers on a LAN? (Choose three.)
A. standby
B. established
C. active
D. idle
E. backup
F. ini t
Answer: ACF
26. What is the effect of configuring the following command on a switch?Switch(config) # spanning-tree portfast
bpdufilter default
A. If BPDUs are received by a port configured for PortFast, then PortFast is disabled and the BPDUs are
processed normally.
B. If BPDUs are received by a port configured for PortFast, they are ignored and none are sent.
C. If BPDUs are received by a port configured for Portfast, the port will transition to forwarding state.
D. The command will enable BPDU filtering on all ports regardless of whether they are configured for BPDU
filtering at the interface level.
Answer: A
27. When a wireless client is being configured via the use of Cisco ADU, what are three options that can be set
under the Advanced tab in Profile Management? (Choose three.)
A. Pre-Shared Key (Static WEP)
B. SSID
C. Multicast Packet Filtering
D. Transmit Power Level
E. Network Type
F. 802.11b Preamble
Answer: DEF
29. Which two types of activities does the Lightweight Access Point Protocol (LWAPP) define? (Choose two.)
A. access point certification and software control
B. compression and Layer 3 address mapping
C. Layer 3 addressing and distribution
D. packet encapsulation, fragmentation, and formatting
E. SNMP monitoring services
Answer: AD
30. Which protocol enables a group of routers to form a single virtual router and use the real IP address of a router
as the gateway address?
A. Proxy ARP
B. HSRP
C. IRDP
D. VRRP
E. GLBP
Answer: D
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