问题：单选题Which statement is correct about policies in the Junos OS?（）A Export policies are used to filter routes from the RE forwarding table to the PFE forwarding table.B Export policies are used to filter routes destined for the routing table.C Export policies are used to filter routes being sent to neighboring devices.D Export policies are used to filter traffic leaving the device.
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问题：多选题Which two statements are true regarding the role of the Routing Engine (RE)?（）AThe RE controls and monitors the chassis.BThe RE manages the Packet Forwarding Engine (PFE).CThe RE receives a copy of the forwarding table from the forwarding plane.DThe RE implements class of service (COS).
问题：单选题Which command would you use to view interface usage details in real time?（）A show interfaces terseB show interfaces extensiveC monitor interface trafficD monitor traffic interface
问题：单选题There are three static routes in the routing table that need to be announced to your OSPF peers. Which method is used to accomplish this?（）A Apply an import policy to OSPF that injects the static routes into OSPFB Apply an import policy to the static routes that injects the static routes into OSPFC Apply an export policy to the static routes that injects the static routes into OSPFD Apply an export policy to OSPF that injects the static routes into OSPF
问题：多选题By default, which two statements are true about export routing policies?（）AExport policies can evaluate only active routes.BExport policies can evaluate all routes.CExport policies can be applied to the forwarding table.DExport policies can be applied directly to interfaces
问题：单选题At which layer of the OSI model does error checking occur with IPv6?（）A Layer 2B Layer 3C Layer 4D Layer 7
问题：多选题What are three physical interface properties?（）Apayload scramblingBvirtual circuit identifierCFCSDlink speedEIP address
问题：单选题What does the command show compare rollback 1 display?（）A the difference between the current candidate configuration and the candidate configuration from one commit agoB the difference between the current active configuration and the current candidate configurationC the difference between the current active configuration and the active configuration from one commit agoD the difference between the current candidate configuration and the archived configuration from one commit ago
问题：单选题What information does the help reference command provide?（）A A brief description of commands and their default valuesB The serial number and version number of the device used to open a support case with JTACC A list of all the active hardware alarms on the deviceD A display of the current configuration while in operational mode
问题：单选题Which statement is correct about the forwarding table?（）A The forwarding table is stored only on the PFEB The forwarding table contains all known routesC The forwarding table is stored on both the RE and PFED The forwarding table is stored only on the RE
问题：单选题What represents the decimal equivalence of 11100111?（）A 195B 223C 230D 231
问题：多选题What are three benefits of using IPv6?（）AIPv6 supports a greater level of security by integrating features that were optional add-ons in IPv4.BIPv6 reduces administrative overhead using stateless address autoconfiguration for hosts.CIPv6 eliminates the need for private to public NAT using a large address pool.DIPv6 provides backward compatibility with IPv4 using the Next Header field.EIPv6 represents large IP addresses using dotted decimal notation.
问题：多选题Which two statements are true about TCP communication?（）AThe receiver acknowledges the final packet in each communications stream.BThe receiver adds sequencing numbers to the packets received.CThe sender adds sequencing numbers to the packets it sends.DThe receiver acknowledges each packet it receives from the sending device.
问题：单选题Which command will delete the current rescue configuration?（）A user@router# system delete configuration rescueB user@router> request system configuration rescue deleteC user@router# delete rescue configurationD user@router> file delete rescue-configuration
问题：单选题What information is used by a switch to forward an Ethernet frame to its destination?（）A IP addressB destination MAC addressC ARP table entryD FCS checksum
问题：单选题How many host addresses are available in the /28 network?（）A 6B 14C 28D 30
问题：单选题What represents the binary equivalence of 148?（）A 10010110B 11010010C 10011100D 10010100
问题：单选题What is the role of route preference?（）A It is used as a tiebreaker when the same prefix is available through multiple protocols.B It is used to determine the preferred path to a given destination.C It is used to select the best route between multiple equal-cost paths.D It is used to select which routing table to use for forwarding.
问题：单选题How does the PFE handle unicast transit traffic destined for an existing forwarding table entry?（）A It sends the traffic through one egress port toward its destinationB It sends the traffic through multiple egress ports to all available receiversC It sends the traffic through an internal link to the RED It sends the traffic to the local system for further processing
问题：单选题Which CLI command do you use to determine which files are cleanup candidates?（）A request system storage cleanup candidatesB request system services storage candidatesC request system services candidate cleanupD request system storage cleanup dry-run
