Characteristics of communication are __________, __________, __________, __________, __________, __________ and __________.

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

A . Hierarchical OSPF networks need to be in one area B . Multiple OSPF areas must connect to area 0 C . Single area OSPF networks must be configured in area 1 D . Areas can be assigned any number from 0 to 63535 E . Area 0 is called the backbone area F . Each OSPF area need to be configured with a loopback interface

A . classful routing protocol B . variable-length subnet masks C . broadcast addressing D . manual route summarization E . uses SPF algorithm to compute path

A .  RSVP itself provides bandwidth and delay guarantees. B .  For RSVP to be end-to-end， all devices must support RSVP. C .  RSVP reservations are maintained by a centralized reservations server. D .  An RSVP compatible QoS mechanism must be used to implement guarantees according to RSVP reservations.

A . The wires in each pair are wrapped around each other B . An insulating material covers each of the individual copper wires in it C . It comes in eight-pair wire bindles D . EMI and RFI cause only limited degradation to signals running over it E . It comes in seven categories F . IT has an external diameter of approximately 0 28 inche

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 . VTP messages are sent out all switch-switch connections. B . VTP L2 messages are communicated to neighbors using CDP. C . VTP manages addition， deletion， and renaming of VLANs 1 to 4094. D . VTP pruning restricts flooded traffic， increasing available bandwidth. E . VTP V2 can only be used in a domain consisting of V2 capable switches. F . VTP V2 performs consistency checks on all sources of VLAN information.

A . can be used over analog circuits B . maps Layer 2 to Layer 3 address C . encapsulates several routed protocols D . supports IP only E . provides error correctio

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 .  It helps verify end-to-end path availability. B .  It provides traffic rerouting in case of disaster. C .  HSRP， GLBP， and VRRP can be clients of GSS. D .  BGP must be the routing protocol between the distributed data centers. E .  DNS responsiveness is improved by providing centralized domain management.

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

A . It can take on HSRP, VRRP, and GLBP as clients. B . It provides automatic inbound route optimization. C . Path selection may be based on delay, loss, or jitter. D . The border router makes decisions about which outbound path to use. E . Automatic load distribution is provided for multiple connections.

A . RSVP itself provides bandwidth and delay guarantees. B . For RSVP to be end-to-end, all devices must support RSVP. C . RSVP reservations are maintained by a centralized reservations server. D . An RSVP compatible QoS mechanism must be used to implement guarantees according to RSVP reservations.

A . Has a maximum hop count of 25 B . Can differentiate between internal and external routes C . Uses a 32-bit metric D . Can maintain only one routing table E . Need all networks to use the same subnet mask F . Supports only one routed protocol

A . Individual statements in a named access list may be deleted. B . They require a numbered range from 1000 to 1099. C . When created, they must be specified as standard or extended. D . They are created with the ip access-list command. E . The entire access list must be deleted before editing. F . They are applied with the ip name-group command.

A . It helps verify end-to-end path availability. B . It provides traffic rerouting in case of disaster. C . HSRP, GLBP, and VRRP can be clients of GSS. D . BGP must be the routing protocol between the distributed data centers. E . DNS responsiveness is improved by providing centralized domain management.

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 .  It can take on HSRP， VRRP， and GLBP as clients. B .  It provides automatic inbound route optimization. C .  Path selection may be based on delay， loss， or jitter. D .  The border router makes decisions about which outbound path to use. E .  Automatic load distribution is provided for multiple connections.

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 . Encapsulates several different types of routing protocols. B . Supports only IP. C . Can be used over analog circuits. D . Is proprietary to Cisco E . Supports error correction.

A.shareholders who are mutual agents B.direct management by the shareholders (owners) C.its inability to own property D.shareholders who have limited liability

<img src='https://img2.soutiyun.com/ask/uploadfile/13176001-13179000/e3edba3dae446d6c07212db2f3756a50.jpg' /> 此题为多项选择题。

A．Rapid response B．PMN and phagocytes C．slow response D．B and T cells E．Pattern recognition molecules F．antibodies 此题为多项选择题。