JN0-120
单选题Which ERX Edge Router component is responsible for all packet processing and packet forwarding？（）A I/O adapterB line moduleC shared memory fabricD switch route processor
题目
I/O adapter
line module
shared memory fabric
switch route processor
相似问题和答案
第1题：
A. ip sa-validate
B. ip split-horizon
C. ip access-routes
D. ip filter-options
第2题：
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
第3题：
阅读下面的短文，回答问题 [When an IP packet arrives at a router, generally the router looks at the destination address of the packet, and forwards the packet to one of its network interfaces. The forwarding decision is usually done by looking up the destination address from another data structure called a forwarding table. The forwarding table is created by the router using the routing table and possible routing policies existing in the router. The router then creates a table where it lists which networks are accessible through which of the router’s network interfaces. An IP router looks at every IP packet individually and does the forwarding decision on a packet-by-packet basis. If something changes in the router’s routing table, a packet can take a different route from a preceding packet even if it has the same destination.] From the paragraph above，we can see that the router （ ） a forwarding table according to the routing table and possible routing policies existing in the router. When an IP packet arrives at a router, the （ ） part of packet is normally checked by the router. An IP router checks every IP Packet individually and makes the forwarding decision based on （ ）.
A．is generating B．generate C．is generated D．generates A．forwarding table B．network interfaces C．routing policies D．destination address A．the destination address and network interfaces B．forwarding table and network interfaces C．the destination address and forward table D．routing policies and routing table
第4题：
Which three statements about the secure domain router are true？（）
- A、The logical router can span across chassis.
- B、The fabric and system controller module are shared by all logical routers.
- C、Each logical router has a distinct fabric and system controller module
- D、The logical router can share a route processor
- E、The logical router cannot share a route processor
正确答案:A,B,E
第5题：
A.on the SRP
B.on the I/O adapter
C.on the egress line module
D.on the ingress line module
第6题：
A. I/O module
B. switch fabric
C. egress line module
D. ingress line module
第7题：
A.I/O adapter
B.line module
C.shared memory fabric
D.switch route processor
第8题：
A. destination NAT
B. forwarding lookup
C. route lookup
D. SCREEN options
第9题：
If an edge Label Switch Router （LSR） is properly configured，which three combinations are possible？（）
- A、A received IP packet is forwarded based on the IP destination address and the packet is sent as an IP packet.
- B、An IP destination exists in the IP forwarding table. A received labeled packet is dropped because the label is not found in the LFIB table.
- C、There is an MPLS label-switched path toward the destination. A received IP packet is dropped because the destination is not found in the IP forwarding table.
- D、A received IP packet is forwarded based on the IP destination address and the packet is sent as a labeled packet.
- E、A received labeled IP packet is forwarded based upon both the label and the IP address.
- F、A received labeled packet is forwarded based on the label. After the label is swapped，the newly labeled packet is sent.
正确答案:A,D,F
第10题：
You want your Catalyst switch to implement a switching method that holds a packet in its memory until the data portion of the respected packet reaches the switch.Which method should you employ on your Catalyst switch?（）
- A、Fast Forward
- B、Store and forward
- C、Frag-free
- D、None of the above
正确答案:C