Which three are true about servlet filters？（）

A . Out-of-profile packets are queued. B . It causes TCP retransmits. C . Marking and remarking are not supported. D . It does not respond to BECN and foresight messages. E . It uses a single- and two-bucket mechanism for metering.

A . Utilizing Syslog improves network performance. B . The Syslog server automatically notifies the network administrator of network problems. C . A Syslog server provides the storage space necessary to store log files without using router disk space. D . There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages. E . Enabling Syslog on a router automatically enables NTP for accurate time stamping。 F . A Syslog server helps in aggregation of logs and alerts.

A . RSTP significantly reduces topology reconverging time after a link failure. B . RSTP expends the STP port roles by adding the alternate and backup roles. C . RSTP port states are blocking，discarding，learing，or forwarding. D . RSTP also uses the STP proprsal-agreement sequence. E . RSTP use the same timer-baseed process as STP on point-to-point links. F . RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.

A .  A user cannot set privileges on the persistent lightweight jobs B .  Persistent lightweight jobs generate a large amount of metadata C .  It is possible to create fully self-contained persistent lightweight jobs D .  The use of a template is mandatory to create persistent lightweight jobs E .  Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time

A . Asinglerowsubquerycanretrieveonlyonecolumnandonerow. B . Asinglerowsubquerycanretrieveonlyonerowbutmanycolumns. C . Amultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns. D . Amultiplerowsubquerycanbecomparedusingthe"；>；"；operator. E . AsinglerowsubquerycanusetheINoperator. F . Amultiplerowsubquerycanusethe"；="；operator.

A . Areas introduce a boundary on the link - state updates. B . Areas are logical definitions specific to any given router. C . All routers within an area have the exact link - state database. D . The calculation of the Dijkstra algorithm on a router is limited to changes within an area. E . The area designated router will always have a priority of 0.

A . STP timers values （hello， forward delay， max age） are included in each BPDU. B . A switch is not concerned about its local configuration of the STP timers values. It will only consider the value of the STP timers contained in the BPDU it is receiving. C . To successfully exchange BPDUs between two switches， their STP timers value （hello， forward delay， max age） must be the same. D . If any STP timer value （hello， forward delay， max age） needs to be changed， it should at least be changed on the root bridge and backup root bridge. E . On a switched network with a small network diameter， the STP hello timer can be tuned to a lower value to decrease the load on the switch CPU. F . The root bridge passes the timer information in BPDUs to all routers in the Layer 3 configuration.

A . RSTP significantly reduces topology reconverging time after a link failure. B . RSTP expends the STP port roles by adding the alternate and backup roles. C . RSTP port satates are blocking,discarding,learing,or forwarding. D . RSTP also uses the STP proprsal-agreement sequence. E . RSTP use the same timer-baseed process as STP on point-to-point links. F . RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.

A . Traffic for a bidirectional group flows along the one shared tree and simultaneously utilizes multiple paths in a redundant network topology B . It does not require any traffic signaling in the protocol C . Membership to a bidirectional group is signaled using explicit Join messages D . It maintains source-specific forwarding state E . It reduces memory， bandwidth， and CPU requirement

A . A single row subquery can retrieve only one column and one row. B . A single row subquery can retrieve only one row but many columns. C . A multiple row subquery can retrieve multiple rows and multiple columns. D . A multiple row subquery can be compared by using the ">" operator. E . A single row subquery can use the IN operator. F . A multiple row subquery can use the "=" operator.

A . When summarization is configured, the router will also create a route to null 0. B . The summary route remains in the route table, even if there are no more specific routes to the network. C . Summarization is configured on a per- interface level. D . The maximum metric for the specific routes is used as the metric for the summary route. E . Automatic summarization across major network boundaries is enabled by default.

A . A user cannot set privileges on the persistent lightweight jobs B . Persistent lightweight jobs generate a large amount of metadata C . It is possible to create fully self-contained persistent lightweight jobs D . The use of a template is mandatory to create persistent lightweight jobs E . Persistent lightweight jobs are useful when users need to create a large number of jobs in a short time

A . The virtual IP address and virtual MA+K44C address are active on the HSRP Master router. B . The HSRP default timers are a 3 second hello interval and a 10 second dead interval. C . HSRP supports only clear-text authentication. D . The HSRP virtual IP address must be on a different subnet than the routers' interfaces on the same LAN. E . The HSRP virtual IP address must be the same as one of the router's interface addresses on the LAN. F . HSRP supports up to 255 groups per interface, enabling an administrative form of load balancing.

A . When properly configured,VTP minimizes VLAN misconfigurations and configuration inconsistencies B . Each broadcast domain on a switch can have its own unique VTP domain C . VTP works at Layer 3 of the OSI model and requires that a management VLAN IP address be configured. D . When properly configured,VTP maintains VLAN configuration consistency and accelerates trunk link negotiation. E . VTP pruning is used to increase available bandwidth in trunk links F . Client,server,and transparent are valid VTP modes G . To configure a switch to be part of two VTP domains,each domain must have its own password

A . EIGRP converges fast RIP because of DUAL and backup routes that are stored in the topology table. B . EIGRP uses a hello protocol to establish neighbor relationships C . EIGRP uses split horizon and reverse poisoning to avoid routing loops. D . EIGRP uses periodic updates to exchange routing information E . EIGRP allows routers of different manufacturers to interoperate F . EIGRP supports VLSM and authentication for routing updates. G . EIGRP use a broadcast address to send routing information.

A . DAI intercept all ARP packets on untrusted ports B . DAI determines the validity of an ARP packet based on the valid MAC address-to-IP address bindings stored in the DHCP Snooping database. C . DAI is used to prevent against a DHCP Snooping attack. D . DAI forwards all ARP packets received on a trusted interface without any checks. E . DAI forwards all ARP packets on untrusted ports. F . DAI determines the validity of an ARP packet based on the valid MAC address-to-IP address bindings stored in the CAM table.

A . It is a Cisco proprietary protocol. B . It runs on TCP port 59. . C . Authentication and authorization are done at different stages. D . TACACS+ encrypts the entire body of the packet， but leaves a standard TACACS+ header. E . It is an industry standard protocol. F . TACACS+ encrypts both the entire body of the packet and the TACACS+ header.

A . Domains can be created using the Configuration Wizard. B . Domains can be created using WLST.   C . Domain configuration files are located in the WebLogic home directory. D . Domains can be created based on a domain template.

A . Out-of-profile packets are queued. B . It causes TCP retransmits. C . Marking and remarking are not supported. D . It does not respond to BECN and foresight messages. E . It uses a single- and two-bucket mechanism for metering.

A . NetFlow records unidirectional IP traffic flow. B . NetFlow records MPLS frame flow. C . NetFlow expert is only over TCP. D . NetFlow records is only over UDP. E . NetFlow records subinterface information of traffic flow.

A .  Only one window can be open at any given time B .  Consumer groups are associated with windows C .  Windows work with job classes to control resource allocation D .  The database service name must be provided during windows creation E .  Windows can automatically start job or change resource allocation among jobs for various time periods.