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单选题
Which ERX Edge Router component is responsible for all packet processing and packet forwarding？（）
A
I/O adapter
B
line module
C
shared memory fabric
D
switch route processor
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Where does Layer2 de－encapsulation occur on the ERX Edge Router?()
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Where does Layer2 de-encapsulation occur on the ERX Edge Router？（）A、on the SRPB、on the I/O adapterC、on the egress line moduleD、on the ingress line module
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Which element occurs first during the first-packet-path processing?（）A、destination NATB、forwarding lookupC、route lookupD、SCREEN options
考题
单选题Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?（）A
ip sa-validateB
ip split-horizonC
ip access-routesD
ip filter-options
考题
单选题Where does Layer2 de-encapsulation occur on the ERX Edge Router？（）A
on the SRPB
on the I/O adapterC
on the egress line moduleD
on the ingress line module
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单选题If the PFE does not have a route to the destination address of a packet， which action will be taken？（）A
The PFE floods the packet out of all interfaces.B
The PFE drops the packet and sends a destination unreachable notification back to source device.C
The PFE forwards the packet to the routing engine for further processing.D
The PFE queues the packet and sends a request for a layer 3 lookup to the routing engine.
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When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interfaceD
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permit all packet matching the host bits in the source address to all destinationsD
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Store and forwardC
Frag-freeD
None of the above
考题
单选题Which statement describes queue and buffer managment in the E-series router?（）A
Buffer memory is managed dynamically in the I/O module.B
Buffer memory is managed dynamically in the switch fabric.C
Buffer memory is managed dynamically on egress line modules.D
Buffer memory is managed dynamically on ingress line modules
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