Cisco 640-875 : Building Cisco Service Provider Next-Generation Networks Part 1

640-875 real exams

Exam Code: 640-875

Exam Name: Building Cisco Service Provider Next-Generation Networks Part 1

Updated: Oct 20, 2026

Q & A: 240 Questions and Answers

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Cisco 640-875 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: IPv4 and IPv6 Addressing13%- Types of IPv4 and IPv6 addresses
- VLSM, CIDR and route summarization concepts
- Design an IP subnetting plan
- Structure of IPv4 and IPv6 addresses
Topic 2: Routed Network Technologies I10%- Routing protocol basics
- Classful vs classless routing
Topic 3: Switched Network Technologies I12%- Ethernet link bundling (LACP, PAgP)
- Switch security (e.g., port security)
- Bridging concepts and Layer 2 Ethernet frames
- Basic Spanning Tree operations
Topic 4: IP Networks12%- Common network applications
- LAN vs WAN operation differences
- Purpose and functions of network devices
- OSI and TCP/IP models
- Network troubleshooting layered model

640-875 Exam Questions Candidates Actually Ask

Cisco Building Cisco Service Provider Next-Generation Networks Part 1 is an official Cisco exam, catalogued under the code 640-875. Passing it awards the CCNA SP certification at the Associate level. It also links to CCNA Service Provider, 640-878 SPNGN2 Building Cisco Service Provider Next-Generation Networks, Part 2, which broadens its career value. Qualifying exams exist to prove ability in a measurable way, and this one proves yours against the vendor's own standard.

Cisco Building Cisco Service Provider Next-Generation Networks Part 1 gives you 65–75 questions and 90 minutes to answer them. Treat time as a resource to allocate, not a countdown to fear: rehearse full sessions in the FreePdfDump test engine, practice skipping and returning, and build the calm familiarity that lets your actual knowledge show up on exam day.

Passing Cisco Building Cisco Service Provider Next-Generation Networks Part 1 takes 800 (approximate typical scoring target), and the official fee is Approximately USD 300 (approximate). Retakes cost the full Approximately USD 300 (approximate) again, which makes verified readiness the cheapest insurance there is. Track your FreePdfDump practice scores across sessions and book the exam only when clearing the requirement has become your baseline, not your best day.

No formal prerequisites; relevant network experience recommended

Since vendor requirements are revised periodically, confirm the current conditions before registering on the official exam page.

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Your purchase carries a 100% money-back guarantee with defined conditions. Take the Cisco Building Cisco Service Provider Next-Generation Networks Part 1 exam within 60 days of purchase; if you fail, you can claim a full refund, provided the exam matches your product. Attempts within 3 days of purchase are not eligible, and neither are downloaded-but-unused products, free materials, or expired orders; the candidate name must match the payer name. File with a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and claims are processed within 7 days. If you prefer, exchange instead: two other exam products of equal value, free, with the update service on your original purchase retained.

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The Cisco Building Cisco Service Provider Next-Generation Networks Part 1 exam is divided into 4 domains. The most prominent are IP Networks (12%), Switched Network Technologies I (12%), and Routed Network Technologies I (10%). The complete outline is above on this page; candidates who know the map waste far less time getting to the destination.

Cisco Building Cisco Service Provider Next-Generation Networks Part 1 Sample Questions:

Question #1

Which two statements are correct regarding routing protocol authentication? (Choose two.)

  • A. BGP peers can be configured with different passwords.
  • B. MD5 passwords are never sent to a peer.
  • C. Authentication can be established using keychains on one peer and MD5 hashing on the other.
  • D. Routers authenticate each routing update packet received.
  • E. UDP port 179 is used for BGP session authentication.
  • F. MD5 authentication can only be established between Internal BGP peers.
Reveal Solution  Discussion  0

Correct Answer: B,D  🗳️

Question #2

You are deploying three switches for a network that contains 20 VLANs, as follows:
Switch A is the root for VLAN1
Switch B is the root for VLAN20
Switch C is the secondary root for VLAN 1 and VLAN 20 only
What are two ways to configure the switches? (Choose two.)

  • A. Switch Aspanning-tree vlan 1 priority 4096
    Switch B
    spanning-tree vlan 20 priority 4096
    Switch C
    spanning-tree vlan 1 priority 12288
    spanning-tree vlan 20 priority 12288
  • B. Switch A
    spanning-tree vlan 1 priority 8192
    Switch B
    spanning-tree vlan 20 priority 8192
    Switch C
    spanning-tree vlan 1 priority 4096
    spanning-tree vlan 20 priority 4096
  • C. Switch A
    Spanning-tree vlan 1 root primary
    Switch B
    Spanning-tree vlan 20 root primary
    Switch C
    Spanning-tree vlan 1-20 priority 4096
  • D. Switch A
    Spanning-tree vlan 1 root primary
    Switch B
    Spanning-tree vlan 20 root primary
    Switch C
    Spanning-tree vlan 1,20 root secondary
  • E. Switch A
    spanning-tree vlan 1 root primary
    Switch B
    spanning-tree vlan 20 root primary
    Switch C
    spanning-tree vlan 1-20 root secondary
Reveal Solution  Discussion  0

Correct Answer: A,D  🗳️

Question #3

Company policy only allows SSH for remote access into Cisco routers. Which configuration would only allow SSH?

  • A. access-lists 101 deny tcp any eq telnet
  • B. access-class 101 out
  • C. transport preferred SSH
  • D. access-class 101 in
  • E. transport input SSH
Reveal Solution  Discussion  0

Correct Answer: E  🗳️

Question #4

Which three are features present on both ICMPv4 and ICMPv6? (Choose three.)

  • A. mobile IPv4 support
  • B. information error messaging
  • C. multicast group management
  • D. fragmentation needed notification
  • E. address assignment
  • F. connectivity tests
  • G. mobile IPv6 support
  • H. address resolution
Reveal Solution  Discussion  0

Correct Answer: B,D,F  🗳️

Question #5

Which two features are used on CE devices in Metro Ethernet? (Choose two.)

  • A. Xconnect
  • B. packet filtering
  • C. encryption
  • D. MPLS
Reveal Solution  Discussion  0

Correct Answer: A,D  🗳️

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