642-812 BCMSN
Building Converged Cisco Multilayer Switched Networks
Exam Number: 642-812
Associated Certifications: CCNP, CCIP, CCDP
Duration: 90 minutes (50-60 questions)
Available Languages: English, Japanese
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6. Refer to the exhibit. Switch S2 contains the default configuration. Switches S1 and S3 both have had the command spanning-tree mode rapid-pvst issued on them. What will be the result?
A. Switches S1 and S3 will be able to exchange traffic but neither will be able to exchange traffic with Switch S2
B. Switches S1, S2, and S3 will be able to pass traffic between themselves. However, if there is a topology change, Switch S2 will not receive notification of the change.
C. Switches S1, S2, and S3 will be able to pass traffic among themselves.
D. IEEE 802.1D and IEEE 802.1w are incompatible. All three switches must use the same standard or no traffic will pass between any of the switches.
Answer: C
7. 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
Describe and configure wireless client access.
Describe the components and operations of WLAN topologies (i.e., AP and Bridge).
Describe the features of Client Devices, Network Unification, and Mobility Platforms (i.e., CCX, LWAPP).
Configure a wireless client (i.e., ADU).
Describe and configure security features in a switched network.
Describe common Layer 2 network attacks (e.g., MAC Flooding, Rogue Devices, VLAN Hopping, DHCP Spoofing, etc.)
Explain and configure Port Security,802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI.
Verify Catalyst switch (IOS-based) security configurations (i.e., Port Security, 802.1x, VACLs, Private VLANs, DHCP Snooping, and DAI).
642-812 exam is one of the most valuable certification of Cisco certification.Over the previous few decades, the education of computer science has gained the attention of a great majority of people all around the world. There are new developments everyday in the field of Information Technology and it necessitate on the part of IT professionals that they should upgrade their knowledge regarding all innovations in their field.
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