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Exam Code: JN0-643
Exam Name: Juniper (Enterprise Routing and Switching, Professional (JNCIP-ENT))
One year free update, No help, Full refund!
Total Q&A: 201 Questions and Answers
Last Update: 2014-02-18
JN0-643 Free Demo Download: http://www.itcertking.com/JN0-643_exam.html
NO.1 A company is deploying a new 802.1X port-based security infrastructure to allow users to
access resources through wired Ethernet ports. However they recently deployed an RSA
token-based system for users to connect remotely. The network administrator wants to reuse the
same security database for 802.1X port-based security.
Which 802.1X authentication protocol is required?
A. EAP-TLS
B. LAN-PEAP
C. RSA-EAP
D. EAP-TTLS
Answer: D
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NO.2 You must configure your access switch with more than 3000 VLANs and you want the ability
to load-balance across them.
Which spanning-tree approach has the least impact on control-plane performance?
A. Configure your access switch with a load-balancing policy and apply it under [edit protocols rstp].
B. Configure your access switch for Rapid-PVST+.
C. Configure your access switch for MSTP , incorporating the use of MSTIs.
D. Configure your access switch for both VSTP and RSTP .
Answer: C
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NO.3 You have been asked to implement a private VLAN with two community VLANs.
This private VLAN will be confined to a single switch in your Layer 2 network.
This private VLAN, along with other VLANs configured on the switch, will require gateway services
provided through a connected router.
Which statement about this deployment is true?
A. All isolated ports must be configured as trunk ports.
B. A minimum of one promiscuous trunk port is required.
C. Both community VLANs must have an assigned VLAN IDs.
D. A minimum of one private VLAN trunk port is required.
Answer: B
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NO.4 Which protocol reachability is advertised by OSPFv2?
A. IPv4
B. IPv5
C. IPv6
D. ISO
Answer: A
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NO.5 Which option is a valid IPv6 multicast address?
A. fe80::205:8640:471:3200/ 64
B. ::172.16.0.5 /126
C. ff03:365:ba::23
D. ff01:cgfc:345:22::226:8ff:fee4:bf6f
Answer: C
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NO.6 You are implementing MSTP in your network.
Which three values must match on all switches within the MST region? (Choose three)
A. Context identifier
B. Region name
C. VLANs
D. Revision
E. Configuration manifest
Answer: B,C,D
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NO.7 Voice traffic is coming in on UDP port 17689. This traffic must be classified into the
expedited-forwarding forwarding class.
Which type of classifier is needed?
A. code point alias
B. rewrite marker
C. multifield
D. behavior aggregate
Answer: C
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NO.8 A Layer 2 forwarding loop occurred on your network during a scheduled maintenance period.
You must prevent this behavior in the future.
Which protocol should you enable on the EX Series switch to address this condition in the future?
A. DVMRP
B. L2TPv3
C. STP
D. RSVP
Answer: C
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NO.9 You are AS 6573.
Which AS path regular expression matches only routes originated in your AS?
A. "6573.*"
B. ".*"
C. "{"
D. "
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