Which two of these key fields are used to identify a flow in a traditional NetFlow implementation？（）

A .  class of service B .  bandwidth profiles C .  user-network interface D .  Ethernet LAN circuit attributes E .  Ethernet virtual circuit attribute

A .  An ACL can be applied to multiple interlaces. B .  An ACL wildcard mask is identical to an IP subnet mask. C .  There may be multiple ACLs per protocol， per direction， and per interface. D .  There is an "implicit deny" at the end of an ACL and will result in a dropped packet. E .  An ACL acts on all packets， those flowing thru the router and those originated by the router itself. F .  An ACL will be processed from top to bottom and may have multiple matches that will act on the packet that is being tested.

A . it is a layer 2 messaging protocol which maintains vlan configurations across network. B . it includes an 8-bit field which specifies the priority of a frame. C . it is used exclusively for tagging vlan frames and dose not address network reconvergence following switched network topology changes. D . it modifies the 802.3 frame header,and thus requires that the FCS be recomputed. E . it is a trunking protocol capable of carring untagged frames.

A . use ISL encapsulation B . use 802.1q encapsulation C . set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation D . use VTP server mode to support dynamic propagation of VLAN information across the network E . set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.

A .  Layer 3 MPLS VPNs can forward only IP packets B .  Layer 2 MPLS VPNs can forward any network protocol C .  MPL S label paths are automatically formed based on Layer 2 frames D .  Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames E .  In Layer 2 MPLS VPNS， the service provider controls the customer Layer 3 policie

A . 802.1X B . Cisco Temporal Key Integrity Protocol （CKIP） C . Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling （EAP-FAST） D . Cisco Message Integrity Check （CMIC） E . One-Time Passwords （OTP） F . Advanced Encryption Standard （AES）

A . supports multiple protocols B . works only in a shared or loop environment C . allows addressing for up to 4 million nodes D . allows addressing for up to 8 million nodes E . provides a high speed transport for SCSI payloads F . may stretch to a distance of up to100 km before needing extender

A . passively listens to network traffic B . is an active device in the traffic path C . has a permissive interface that is used to monitor networks D . traffic arrives on one IDS interface and exits on another E . has a promiscuous interface that is used to monitor the network

A . RSTP cannot operate with PVST+. B . RSTP defines new port roles. C . RSTP defines no new port states. D . RSTP is a proprietary implementation of IEEE 802.1D STP. E . RSTP is compatible with the original IEEE 802.1D STP.

A .  use ISL encapsulation B .  use 802.1q encapsulation C .  set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation D .  use VTP server mode to support dynamic propagation of VLAN information across the network  E .  set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.

A . use ISL encapsulation B . use 802.1q encapsulation C . set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation D . use VTP server mode to support dynamic propagation of VLAN information across the network E . set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiatio

A . class of service B . bandwidth profiles C . user-network interface D . Ethernet LAN circuit attributes E . Ethernet virtual circuit attribute

A .  supports multiple protocols B .  works only in a shared or loop environment C .  allows addressing for up to 4 million nodes D .  allows addressing for up to 8 million nodes E .  provides a high speed transport for SCSI payloads F .  may stretch to a distance of up to 100 km before needing extender

A . SELECT TOTAL(*) FROM customers; B . SELECT COUNT(*) FROM customers; C . SELECT TOTAL(customer_id) FROM customers; D . SELECT COUNT(customer_id) FROM customers; E . SELECT COUNT(customers) FROM customers; F . SELECT TOTAL(customer_name) FROM customer

A . passively listens to network traffic B . is an active device in the traffic path C . has a permissive interface that is used to monitor networks D . traffic arrives on one IPS interface and exits on another

A .  multicast routing uses RPF B .  multicast routing is connectionless. C .  In multicast routing， the source of a packet is known. D .  When network topologies change， multicast distribution trees are not rebuilt， but use the originalpath E .  Multicast routing is much like unicast routing， with the only difference being that it has a a groupof receivers rather than just one destinatio

A .  available only in autonomous APs B .  available in autonomous and lightweight APs C .  a feature of WDS in autonomous APs D .  a feature of WDS in lightweight APs E .  requires at least one AP and one Wireless LAN Services Module

A . RSTP cannot operate with PVST+. B . RSTP defines new port roles. C . RSTP defines no new port states. D . RSTP is a proprietary implementation of IEEE 802.1D STP. E . RSTP is compatible with the original IEEE 802.1D STP.

A .  Tablespace name B .  Storage quota C .  Retention D .  Table name E .  Create a default archive

A .  passively listens to network traffic B .  is an active device in the traffic path C .  has a permissive interface that is used to monitor networks D .  traffic arrives on one IPS interface and exits on another

A . it is a layer 2 messaging protocol which maintains vlan configurations across network. B . it includes an 8-bit field which specifies the priority of a frame. C . it is used exclusively for tagging vlan frames and dose not address network reconvergence following switched network topology changes. D . it modifies the 802.3 frame header，and thus requires that the FCS be recomputed. E . it is a trunking protocol capable of carring untagged frames.

A . source port B . output interface C . next-hop IP address D . source MAC address E . destination IP address F . next-hop MAC addre

A . the number of subscribers that will be serviced currently and in the future because this affects the number of required PPPoA sessions B . The types of applications that the NSP offers to the end subscriber C . The capacity of ATM and Frame Relay interworking on the NSP D . in the case of more than one user， whether all users need to reach the same final destination orservice，or they all have different service destinations E . Whether the service provider or the final service destination is providing the IP address to the CPE of the subscriber

A．Nike is the best brand of athletic footwear and sports clothing. B．The managers of Nike, Bowerman and Knight are both athletes. C．The company let Jordan endorse Nile's shoes. D．The diligence of the company managers. 此题为多项选择题。