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Cisco 351-001 Exam
CCIE Routing and Switching v4.0 Written Beta (Page 11 )

Updated On: 1-Feb-2026
Page 9 of 49
PDF with 234 Questions

SCSI interfaces provide for faster data transmission rates (up to 80 megabytes per second) than standard serial and parallel ports. In addition, you can attach many devices to a single SCSI port, so that SCSI is really an I/O bus rather than simply an interface. Which two statements about SCSI are true?

  1. The bus is limited to 64 devices.
  2. It is a full-duplex serial standard.
  3. It is a half-duplex serial standard.
  4. It allows up to 320 MB/s of shared channel bandwidth.

Answer(s): C,D



MPLS VPN is a family of methods for harnessing the power of Multiprotocol Label Switching (MPLS) to create Virtual Private Networks (VPNs). When using MP-BGP peering to connect twoMPLS-VPN service providers to one another between route reflectors. Which type of routes should be exchanged between the ASBRs?

  1. Infrastructure routes
  2. PE loopback addresses
  3. labeled routes
  4. VPN routes

Answer(s): B



The Sender Policy Framework (SPF) is an open standard specifying a technical method to prevent sender address forgery. When configuring the SPF exponential back off timer, which one of the following items is among the primary issues to consider?

  1. Number of external routes
  2. Area size
  3. Average SPF run time
  4. Interface stability

Answer(s): C



Which method can most efficiently implement IP multicast in a network without using RPs?

  1. RPs can't be eliminated; they're mandatory in multicast networks.
  2. Implement PIM dense mode multicast to eliminate the need for RPs.
  3. Implement source-specific multicast and utilize the functionality of IGMPv3 to replace the RPs.
  4. Implement source-specific multicast and utilize the functionality of IGMPv2 to replace the RPs.

Answer(s): C



A service provider would like to provide a service allowing customers to span VLANs across multiple campuses. Which configuration will allow this service provider to achieve its desired result with a minimal effect on the scalability of PE routers?

  1. RFC 2547-based service, with MPLS/LDP between PE and CE (in other words, CsC)
  2. VPWS service, with 802.1Q between PE and CE
  3. RFC 2547-based service, with L2TPv3 between PE and CE
  4. VPWS service, with QinQ between PE and CE

Answer(s): D



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