640-875 Building Cisco Service Provider Next-Generation Networks, Part 1 (SPNGN1)

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Question 1

Given the IP address of, which two options are the subnet that this IP
address belongs to and the subnet broadcast IP address? (Choose two.)

  • A.
  • B.
  • C.
  • D.
  • E.
  • F.

Answer : C,F

Question 2

Which statement about IPv6 global unicast addresses is true?

  • A. The first 3 bits is 001.
  • B. The first 4 bits is 0011.
  • C. The first 4 bits is 1111.
  • D. The first 16 bits is FE80 in hex.
  • E. The first 16 bits is FF00 in hex.
  • F. The first 16 bits is 2002 in hex.
  • G. The first 16 bits is 3FFE in hex.

Answer : A

Question 3

Which is a valid IPv6 Link Local address?

  • A. FF00::1
  • B.
  • C. FE80::1
  • D. FE70::1
  • E.

Answer : C

Question 4

Given the IP address, which three options are the subnet that
this IP address belongs to, the host IP address range on this subnet, and the subnet
broadcast IP address?

  • A. subnet =
  • B. subnet =
  • C. subnet =
  • D. host IP address range = to
  • E. host IP address range = to
  • F. host IP address range = to
  • G. subnet broadcast IP address =
  • H. subnet broadcast IP address =
  • I. subnet broadcast IP address =

Answer : A,D,H

Question 5

Refer to the exhibit.

Given the Class C IP network of, using VLSM, which five subnets meet the
requirements in the exhibit? (Choose five.)

  • A.
  • B.
  • C.
  • D.
  • E.
  • F.
  • G.
  • H.
  • I.

Answer : A,B,E,F,I

Question 6

Answer :

Question 7

What is the size difference in bits between an IPv4 address and an IPv6 address?

  • A. 128
  • B. 100
  • C. 98
  • D. 96
  • E. 32

Answer : D

Question 8

Answer :

Question 9

Given a ring topology, which loop prevention mechanism provides the fastest
reconvergence time after a link failure?

  • A. Rapid Per-VLAN Spanning Tree Protocol
  • B. Resilient Ethernet Protocol
  • C. Multiple Spanning Tree Protocol
  • D. Spanning Tree Protocol

Answer : B

Question 10

Which three of the following components must be elected before the Spanning Tree
Protocol can converge in a switched LAN? (Choose three.)

  • A. Designated ports
  • B. Alternate ports
  • C. Converged ports
  • D. Root bridge
  • E. Root ports
  • F. Backup ports

Answer : A,D,E

Question 11

Answer :

Question 12

Answer :

Topic 3, Switched Network Technologies

Question 13

Which Cisco IOS CLI command is used to verify the speed and duplex settings on the
Fa0/1 port on a Cisco switch?

  • A. show ip interfaces fa0/1
  • B. show interfaces fa0/1
  • C. show interfaces fa0/1 switchport
  • D. show ip interfaces brief
  • E. show interfaces switchport

Answer : B

Question 14

If a bridge port is in the non-designated state, which two statements about spanning-tree
operations on this port are true? (Choose two.)

  • A. This port is in the Forwarding state.
  • B. This port sends BPDUs on the attached link.
  • C. This port has the lowest cost to the root bridge.
  • D. This port is considered the root port.
  • E. This port receives BPDUs.
  • F. This port is in the Blocked state.

Answer : E,F

Question 15

What two commands enable port security and allow the switch to dynamically learn the
connected MAC address? (Choose two.)

  • A. switch5(config-if)#switchport port-security
  • B. switch5(config)#switchport port-security
  • C. switch5(config-if)#switchport port-security mac-address sticky
  • D. switch5(config)#switchport port-security mac-address sticky
  • E. switch5(config-if)#switchport port-security mac-address dynamic
  • F. switch5(config-if)#switchport port-security mac-address auto

Answer : A,C

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