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Lead2pass Free JN0-347 Exam Questions Download (21-30)

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100% Real Questions & Correct Answers from Lead2pass QUESTION 28 Which two statements about RSTP are correct? (Choose two.) A. RSTP is not backwards compatible with STP. B. RSTP is backwards compatible with STP. C. RSTP permits multiple root bridges within a Layer 2 domain. D. RSTP permits only a single root bridge within a Layer 2 domain. Answer: BC Explanation: B: RSTP and STP can co-exist. RSTP achieves its rapid converges over STP through new mechanisms. If a RSTP switch connects to an STP switch, the RSTP switch will drop down to STP convergence speeds on a per-port basis. C: Unlike 802.1d (STP), 802.1w (RSTP) uses Hello packets between bridges to maintain link states and does not rely on the root bridge. https://www.juniper.net/documentation/en_US/junos12.3/topics/concept/mx-series-rstp-portstates-roles.html http://www.ciscopress.com/articles/article.asp?p=474236&seqNum=3 QUESTION 29 Click the Exhibit button. A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route. Referring to the exhibit, which route would be selected? A. route A B. route D C. route B D. route C Answer: C JN0-347 Dumps JN0-347 Exam Questions JN0-347 New Questions JN0-347 VCE JN0-347 PDF Get Full Version JN0-347 Q&As From Lead2pass: https://www.lead2pass.com/jn0-347.html

100% Real Questions & Correct Answers from Lead2pass Explanation: Route B with the highest local preference is preferred. See step 3 below. Understanding BGP Path Selection The algorithm for determining the active route is as follows: https://www.juniper.net/documentation/en_US/junos12.3/topics/reference/general/routingptotocols-address-representation.html QUESTION 30 Which two port security features are dependent on the DHCP snooping database? (Choose two.) A. MAC limiting B. dynamic ARP inspection C. IP source guard D. storm control Answer: BC Explanation: B: Dynamic ARP inspection (DAI) prevents Address Resolution Protocol (ARP) spoofing attacks. ARP requests and replies are compared against entries in the DHCP snooping database, and filtering decisions are made on the basis of the results of those comparisons. C: IP source guard mitigates the effects of IP address spoofing attacks on the Ethernet LAN. With IP source guard enabled, the source IP address in the packet sent from an untrusted access interface is validated against t he source MAC address in the DHCP snooping database. The packet is forwarded if the source IP-MAC binding is valid; if the binding is not valid, the packet is discarded. You enable IP source guard on a VLAN. EX Series switches support IPv6 source guard also. http://www.juniper.net/techpubs/en_US/junos13.2/topics/concept/port-security-overview.html JN0-347 Dumps JN0-347 Exam Questions JN0-347 New Questions JN0-347 VCE JN0-347 PDF Get Full Version JN0-347 Q&As From Lead2pass: https://www.lead2pass.com/jn0-347.html

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