What are the benefit of using Netflow?（）

A . produces higher margins than product sales along B . generate recurring revenue C . strengthens customer loyalty D . renews automatically for the lifetime of the product E . helps customers speed architectural planning and design F . eliminates network problem

A .  Cisco IOS configuration B .  tri-band 11g single radios C .  rouge AP integration D .  single view to deploy and manage E .  secure guest acce

A . A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure B . Broadcast storms can be mitigated by decreasing the number of broadcast domains,thus increasing their size. C . A higher level of network security can be reached by separating sensitive data traffic from other network traffic. D . Port-based vlans increase switch-port use efficient,thanks to 802.1Q trunks E . A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure. F . Broadcast storms can be mitigated by increasing the number of broadcast domains,thus reducing their size. G . VLANs make it easier for IT staff to configure new logical groups,because the vlans all belong to the same broadcast domain.

A . Lower power consumption B . Lower maintenance cost C . Simplified configuration D . Deterministic performance E . Longer uptime

A . protection against denial of service （DoS） attacks at infrastructure routers and switches B .  protection against known worm attacks in routers and switches C . quality of service （QoS） control for packets that are sourced from the data plane of Cisco routers and switches D . quality of service control （QoS） for packets that are destined to the control plane of Cisco routers and switches E . quality of service （QoS） control for packets that are destined to the data plane of Cisco routers and switche

A .  FabricPath provides MAC address scalability with conversational learning B .  Loop mitigation with TTL in the frame field C .  STPl independence D .  10 Gbps bandwidth E .  Layer 2 extensions between data center

A . GLBP supports up to eight virtual forwarders per GLBP group B . GLBP supports clear text and MD5 password authentication between GLBP group members C . GLBP is an open source standardized protocol that can be used with multiple vendors D . GLBP supports up to 1024 virtual routers E . GLBP can load share traffic across a maximum of four routers F . GLBP elects two AVGs and two standby AVGs for redundancy

A . Good load balancing between Presentation Tier and Object Tier B . Easy administration C . Flexible Load balancing D . Optimal performance E . Simple security

A .  site-to-site VPN for remote offices B .  business-grade firewall C .  Cisco IOS software-based D .  email security E .  XML support F .  premium support via SMARTnet

A . Having Access to the current software releases and support for software packages B . Having direct or indirect access to the Cisco TAC global organization C . Having improved network availability and performance D . HavingThe ability to access a group of expert

A . A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure B . Broadcast storms can be mitigated by decreasing the number of broadcast domains，thus increasing their size C . A higher level of network security can be reached by separating sensitive data traffic from other network traffic D . Port-based vlans increase switch-port use efficient，thanks to 802.1Q trunks E . A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure F . Broadcast storms can be mitigated by increasing the number of broadcast domains，thus reducing theirsize G . VLANs make it easier for IT staff to configure new logical groups，because the vlans all belong to thesame broadcast domai

A . Graceful restart allows session information recovery without disruption to the network. B . A node can perform a graceful restart to help a neighbor recover its state. The label bindings are kepton state information， which helps the failed node recover faster and does notaffect the current for wardtraffic. C . Graceful restart allows a node to recover state from its neighbor when there is no RP or before thedevice undergoes SSO. D . Graceful restart does not allow session information recovery. E . During a graceful restart， the router removes any stale prefixes after a timer for stale entries expire

A . It encourages industry standardization by defining what functions occur at each layer of the model. B . It necessitates changes in functionality in one layer to other layers. C . It enables equipment efficiency from different vendors to use the same electronic components. D . It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting. E . It supports the evolution of multiple competing standards, and thus enhances business equipment manufacturing opportunities.

A .  TKIP uses an advanced encryption scheme based on AES B .  TKIP provides authentication and integrity checking using Cipher Block Chaining Message Authentication Code （CBC-MAC） C .  TKIP provides per-packet keyingand a rekeying mechanism D .  TKIP provides message integrity check E .  TKIP reduces WEP’s vulnerabilities byusing different hardware encryption chipset F .  TKIP uses a 48 bit InitializationVector

A . NAT protects network security because private networks are not advertised. B . NAT accelerates the routing process because no modifications are made on the packets. C . Dynamic NAT facilitates connections from the outside of the network. D . NAT facilitates end-to-end communication when IPsec is enable. E . NAT eliminates the need to re-address all host that require extemal access. F . NAT conserves addresses through host MAC-level multiplexing.

A . Global indexes are rebuilt automatically at the end of the DDL operation thereby avoiding problems with the UNUSABLE status.  B . You do not have to search for invalid global indexes after the DDL command completes and rebuild them individually.  C . Global indexes are maintained during the operation of the DDL command and therefore can be used by any concurrent query.  D . Global indexes remain intact and available for use by data manipulation language （DML） statements even for sessions that have not enabled the skipping of unusable indexes.

A .  using QoS techniques such as Traffic Policing to rate limit suspected traffic to prevent DoS attacks B .  automatic reconfiguration s of the security devices based on current security threats C .  containment and control of security threats D .  application security E .  anti-x defense F- virtual firewall

A .  reduce complexity B .  reduced costs for all types of users C .  packet inspection at wire speed D .  QoS to the desktop E .  LAN encryption service

A .  Ease of disk administration and maintenance B .  Load balancing across physical disks C .  Software RAID-1 data redundancy with double or triple mirrors D .  Automatic recovery of failed disk

A、Scanning can cut your learning time in half. B、It can also double your reading speed. C、It can help you to research in a purposeful way. D、It can help you become a more flexible reader.