Which two are characteristics of the IS -IS protocol but not OSPF?（）

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

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 . they are used internally within fcoe to map a vsan to a specifc vlan B . they pin traffic fro a specific compute node mezzanine card to aspecific up link port C . an iplink port for the adapter is chosen automatically if no pin group is set

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 .  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 .  it provides centralized request handling for incoming requests. B .  It forces resource authentication to be distributed across web components. C .  It reduces coupling between presentation-tier clients and underlying business services. D .  It can be added and removed unobtrusively， without requiring changes to existing  code. E .  It allows preprocessing and postprocessing on the incoming requests and outgoing  responses.

A . RIP is an example of distance vector routing protocols. B . Updates are periodic and include the entire routing table. C . Routing updates are sent only after topology changes D . The protocol can be useful in hub-and-spoke and hierarchical networks. E . Convergence is usually faster than with link state protocols F . Each router has its own view of the topology

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 . RIP is an example of distance vector routing protocols. B . Updates are periodic and include the entire routing table. C . Routing updates are sent only after topology changes D . The protocol can be useful in hub-and-spoke and hierarchical networks. E . Convergence is usually faster than with link state protocols F . Each router has its own view of the topology

A . It reduces network traffic by collapsing multiple remote requests into one. B . It increases the complexity of the remote interface by removing coarse-grained methods. C . It increases the complexity of the design due to remote synchronization and version control issues. D . It increases network performance introducing multiple fine-grained remote requests which return verysmall amounts of data.

A . They are known as fabric routing. B . They cannot span multiple switches. C . Their connectivity is supported by Layer 2. D . They enable devices in different VSAN fabrics to communicate. E . They require that multiple switch fabrics be merged before they can function.

A .  The rate of traffic is measured and compared to a configured policy. B .  Classification is used to differentiate traffic. C .  Traffic is marked and sent out according to priority. D .  Both can be applied to inbound and outbound traffic. E .  Both buffer traffic to ensure a predetermined traffic rate. F .  Both drop traffic that is above a predetermined traffic rate.

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

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 . It simplifies remote interfaces to distributed objects. B . It promotes cleaner application partitioning and encourages reuse. C . It provides an initial point of contact for handling all related requests. D . It reduces maintainability due to the increased complexity of the design. E . It provides loosely coupled handlers that can be combined in various permutations.

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 .  NICs are used for network connectivity. B .  Servers request specific blocks of data. C .  Storage devices are directly connected to servers. D .  A fabric is used as the hardware for connecting servers to storage devices. E .  The TCO is higher because of the cost of director class storage switches.

A . reducing security breaches B . using the Internet more C . reducing upgrade charges D . adopting new applications and service

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 confines network instability to a single area of network. B . It increases the routing overhead of the network C . It supports VLSM D . It routes between Autonomous Systems. E . It allows extensive control of routing update

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 .  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 . NICs are used for network connectivity. B . Servers request specific blocks of data. C . Storage devices are directly connected to servers. D . A fabric is used as the hardware for connecting servers to storage devices. E . The TCO is higher because of the cost of director class storage switches.

A . It encapsulates component lookup procedures. B . It increases source code duplication and decreases reuse. C . It improves client performance by caching context and factory objects. D . It degrades network performance due to increased access to distributed lookup services.

A . First （most significant ） octet is FF in hex B . Starts with a prefix of FE80 to FEBF in hex C . Starts with a prefix of FECO to FEFF in hex D . Second octet contains a 4-bit multicast scope field E . Last 64 bit contains the modified MAC address of the Ethernet interface F . Is allocated from the unicast address space