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What are two purposes of a forwarding class?（）
- A、to rewrite the ToS bits in the IP header
- B、to classify traffic
- C、to identify traffic that should receive commom treatment
- D、to assign traffic to output queues
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What is the purpose of unicast reverse path forwarding?()
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What are three functions associated with JUNOS software class of service?()
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What are the contents of a scheduler?()
A.A scheduler contains parameters that describe how a queue should be serviced.B.A scheduler contains traffic that is ready to be transmitted.C.A scheduler contains forwarding classes that allow traffic to be forwarded.D.A scheduler contains a map between the classification of a packet and its forwarding class.
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Which two statements are true about traffic shaping and traffic policing？（）A、both traffic shaping and traffic policing cause retransmissions of connection-oriented protocols such as TCPB、both traffic shaping and traffic policing support the marking and re-marking of trafficC、the effects of traffic shaping and traffic policing when configured on a router are applied to outgoing trafficD、traffic shaping queues excess traffic whereas traffic policing discards excess trafficE、traffic shaping allows the traffic to exceed the bit rate whereas traffic policing prevents the traffic from exceeding the bit rate
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What are two step needed to define a QoS policy for a traffic class？（）A、determine a minimum bandwidth guaranteeB、determine interfaces to which to apply policyC、assign priorities to the classD、configure access control lists
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Which QoS preclassification option will require the use of the qos pre-classify command for the VPN traffic？ （）A、VPN traffic needs to be classified based on the Layer2 header informationB、VPN traffic needs to be classified based on the IP precedence or DSCPC、VPN traffic needs to be classified based on IP flow or Layer 3 information， such as source and destination IP addressD、VPN traffic with Authentication Header （AH） needs to preserve the ToS byte
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In which two ways can you influence how downstream LSRs treat MPLS traffic？（）A、Use an EXP rewrite table.B、Use a DSCP rewrite table.C、Statically assign a CoS value to an LDP-signaled LSPD、Statically assign a CoS value to an RSVP-signlated LSP
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What are two functions associated with JUNOS software class of service?（）A、Manage ingress bandwidth.B、Mark packets for special handling.C、Manage congestion by intelligently dropping traffic.D、Classify Frame Relay QoS packets into an equivalent IP CoS environment.
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What is the default Quality of Service traffic class used by the ERX Edge Router?（）A、bronze forwardingB、assured forwardingC、expedited forwardingD、best effort forwarding
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What are two steps needed to define a QoS policy for a traffic class？（）A、 Determine a minimum bandwidth guarantee.B、 Determine interfaces to which to apply policy.C、 Assign priorities to the class.D、 Configure access control lists.
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On the basis of the definitions of different services in various RFCs， traffic with Expedited Forwarding per-hop behavior should be marked as which of these？（）A、IP ToS of 0xEFB、IP experimental ECNC、DSCP decimal 5D、Binary value of 101110
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Which two statements correctly identify factors to consider when Configuring WAN QoS？（）A、Voice Traffic uses Assured ForwardingB、Voice Signaling traffic uses Assured ForwardingC、Voice Signaling traffic uses priority queuingD、Voice Traffic uses priority queuingE、Voice signaling traffic should use priority queuing with Assured Forwarding
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Which two configurations are made using the QoS Setup Wizard? （）(Choose two.)A、Assign applications to traffic classes.B、Use ToS/DSCP values for traffic classes.C、Exclude subnets from QoS management.D、Select dedicated vs. over-subscribed circuits.
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What are two functions associated with JUNOS software class of service？（）A、Log incoming traffic.B、Manage ingress bandwidth.C、Mark packets for special handling.D、Manage congestion by intelligently dropping traffic.E、Classify Frame Relay QoS packets into an equivalent OP CoS environment.
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What is the purpose of unicast reverse path forwarding?（）A、to validate packet receipt on interfaces where the traffic should be receivedB、to forward packets out the interfaces where the traffic should be receivedC、to forward packets out the interfaces where the traffic should be sentD、to validate packet receipt on interfaces where the traffic should be sent
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In which two ways can you influence how downstream LSRs treat MPLS traffic?（）A、Use an EXP rewrite table.B、Use a DSCP rewrite table.C、Statically assign a CoS value to an LDP-signaled LSP.D、Statically assign a CoS value to an RSVP-signaled LSP.
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What are the contents of a scheduler?（）A、A scheduler contains parameters that describe how a queue should be serviced.B、A scheduler contains traffic that is ready to be transmitted.C、A scheduler contains forwarding classes that allow traffic to be forwarded.D、A scheduler contains a map between the classification of a packet and its forwarding class.
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What are three functions associated with JUNOS software class of service?（）A、Log incoming traffic.B、Classify incoming packets.C、Manage outbound bandwidth.D、Manage congestion by intelligently dropping traffic.E、Classify ATM QoS packets into an equivalent IP CoS environment.
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What are two purposes of a forwarding class?（）A、to identify traffic that should be droppedB、to classify trafficC、to identify traffic that should receive common treatmentD、to assign traffic to output queues
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You need to identify the types of inbound traffic that should pass through the perimeter firewall while maintaining the security of the network. Which inbound traffic should be allowed?（）A、VPN TrafficB、DNS TrafficC、LDAP TrafficD、HTTP TrafficE、HTTPS TrafficF、Traffic from the network address of 192.168.10/24
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多选题What are two purposes of a forwarding class?（）Ato identify traffic that should be droppedBto classify trafficCto identify traffic that should receive common treatmentDto assign traffic to output queues
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单选题What is the use of ERSPAN on N1kv？（）A
Send monitored traffic to a VLANB
Send monitored traffic to a remote VEM over L2C
Receive monitored traffic on a vEthernet interfaceD
Send monitored traffic to an IP destination
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多选题What are two purposes of a forwarding class?（）Ato rewrite the ToS bits in the IP headerBto classify trafficCto identify traffic that should receive commom treatmentDto assign traffic to output queues
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多选题Which two statements correctly identify factors to consider when Configuring WAN QoS？（）AVoice Traffic uses Assured ForwardingBVoice Signaling traffic uses Assured ForwardingCVoice Signaling traffic uses priority queuingDVoice Traffic uses priority queuingEVoice signaling traffic should use priority queuing with Assured Forwarding
考题
单选题What are the contents of a scheduler?（）A
A scheduler contains parameters that describe how a queue should be serviced.B
A scheduler contains traffic that is ready to be transmitted.C
A scheduler contains forwarding classes that allow traffic to be forwarded.D
A scheduler contains a map between the classification of a packet and its forwarding class.
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