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发表于 2011-05-25 17:38 |只看该作者 |倒序浏览

最新JN0-400考題分享QUESTION NO: 1Which statement is true regarding the EX-series file system?A. Contents in the /var directory are automatically removed upon a successful software upgrade.B. The file system must be cleaned manually after every upgrade.C. Contents in the /var directory are automatically archived for future software rollbacks.D. The file system must be cleaned manually before every upgrade.Answer: AQUESTION NO: 2Which two statements describe the EX 4200 switches? (Choose two.)A. All EX 4200 switches support either partial or full Power over Ethernet (PoE) support.B. The fan tray used for the EX 4200 switches is not field replaceable.C. The EX 4200 switches support redundant load-sharing AC power supplies.D. The EX 4200 switches can be interconnected to form a single virtual chassis.Answer: C,DQUESTION NO: 3Click the Exhibit button.In the exhibit, what does the asterisk (*) indicate?A. The interface isconfigure for PoE.B. The interface receives untagged frames.C. The interface is up and active.D. The interface contains Layer 3 configuration.Answer: CQUESTION NO: 4Which Spanning Tree Protocol is enabled in the factory-default configuration?A. STPB. PVSTC. MSTPD. RSTPAnswer: DQUESTION NO: 5Which statement is true for configuring a link aggregation group?A. No more than 10 member links can belong to a link aggregation group.B. Link duplex mode and speed must match within a link aggregation group.C. Layer 2 and Layer 3 interfaces can be mixed when creating a link aggregation group.D. Member links cannot span multiple member switches within a virtual chassis.Answer: BQUESTION NO: 6Which three statement describe benefits of bridging? (Choose three.)A. Bridging allows mixed physical media types on a common LAN.B. Bridging uses Layer 2 bridge tables to intelligently forward traffic towards its destination.C. Bridging logically segments user groups based on administrative policy.D. Bridging allows for the creation of multiple broadcast domains.E. Bridging can reduce the number of collisions on a LAN.Answer: A,B,EQUESTION NO: 7When configuring a redundant trunk group (RTG) on an interface, which restriction would apply?A. The interface must be configured as a Layer 3 interface with an assigned IP address.B. The interface cannot be configured as a Layer 2 trunk.C. The gratuitous-ARP-reply must be disabled on the interface.D. Spanning Tree Protocol (STP) cannot be configured on the interface.Answer: DQUESTION NO: 8Which two commands are valid for verifying NTP operation? (Choose two.)A. showntp statusB. showntp associationsC. showntp synchronizationD. showntp serverAnswer: A,BQUESTION NO: 9What describes the way the JUNOS software evaluates a route against a policy?A. The JUNOS software evaluates all terms in a policy sequentially. When it finds that the route matches all criteria specified in the match clause of a term, it applies the actions specified in the then clause and stops processing further terms.B. The JUNOS software evaluates all terms in a policy sequentially. When it finds that the route matches all criteria specified in the from clause of a term, it applies the actions specified in the then clause and continues processing further terms if the accept action was specified.C. The JUNOS software evaluates all terms in a policy sequentially. When it finds that the route matches any criteria specified in the from clause of a term, it applies the actions specified in the then clause and stops processing further terms.D. The JUNOS software evaluates all terms in a policy sequentially. When it finds that the route matches all criteria specified in the from clause of a term, it applies the actions specified in the then clause and stops processing further terms.Answer: DQUESTION NO: 10Click the Exhibit button.In the exhibit, in which configuration hierarchy would the block-stuff filter be defined?A. [edit firewall familyvlan]B. [edit firewall familyethernet]C. [edit firewall familyethernet-switching]D. [edit firewall familyinet]Answer: C

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