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

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
相似考题

1.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

2.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

3.On which component are RED and WRED managed in the router?()A. I/O moduleB. switch fabricC. egress line moduleD. ingress line module

4.Which element occurs first during the first－packet－path processing?()A. destination NATB. forwarding lookupC. route lookupD. SCREEN options

参考答案和解析
正确答案:B
更多“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”相关问题

  • 第1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


    参考答案：C

  • 第2题：

    Where does Layer2 de－encapsulation occur on the ERX Edge Router?()

    A.on the SRP

    B.on the I/O adapter

    C.on the egress line module

    D.on the ingress line module


    参考答案：D

  • 第3题：

    Policy －Based Routing (PBR) has been enabled on Router R1's interfa ce F0／0. Which of the following is true regarding how PBR works?()

    A. Packets entering F0/0 will be compared based on the PBR route map.

    B. Packets exiting F0/0 will be compared based on the PBR route map.

    C. IOS ignores the PBR forwarding directions wh en the packet matches a route map deny clause.

    D. IOS ignores the PBR forwarding directions when the packet matches a route map permit clause.


  • 第4题：

    The following configuration line was added to router R1 Access-list 101 permit ip 10.25.30.00.0.0.255 any What is the effect of this access list configuration?（）

    • A、ermit all packet smatching the first three octets of the source address to all destinations
    • B、permit all packet matching the last octet of the destination address and accept all source addresses
    • C、permit all packet matching the host bits in the source address to all destinations
    • D、permit all packet from the third subnet of the network address to all destinations

    正确答案:A

  • 第5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6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

  • 第7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.

    正确答案:B

  • 第8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

    正确答案:C

  • 第9题：

    Where does Layer2 de-encapsulation occur on the ERX Edge Router？（）

    • A、on the SRP
    • B、on the I/O adapter
    • C、on the egress line module
    • D、on the ingress line module

    正确答案:D

  • 第10题：

    What field in IP packet is prevent the packet from a route to router forever？


    正确答案:TTL （time to live）.

  • 第11题：

    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


    正确答案： D
    解析： 暂无解析

  • 第12题：

    多选题
    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： E,B
    解析： 暂无解析

  • 第13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


    参考答案：B

  • 第14题：

    Which configuration command removes all log filters currently configured on the ERX Edge Router?()

    A.A

    B.B

    C.C

    D.D


    参考答案：C

  • 第15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


    参考答案：C

  • 第16题：

    Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, destined for an Enterprise network. Which of the following answers best describes the router's logic that tells the router, for a given packet, to apply GRE encapsulation to the packet?（）

    • A、When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interface
    • B、When routing the packet, matching a route whose outgoing interface is the GRE tunnel interface
    • C、When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interface
    • D、When permitted by an ACL that was referenced in the associated crypto map

    正确答案:B

  • 第17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18题：

    On which component are RED and WRED managed in the router?（）

    • A、I/O module
    • B、switch fabric
    • C、egress line module
    • D、ingress line module

    正确答案:C

  • 第19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-validate
    • B、ip split-horizon
    • C、ip access-routes
    • D、ip filter-options

    正确答案:A

  • 第20题：

    Which two statements describe the difference between JUNOS Software for securityplatforms and a traditional router？（）

    • A、JUNOS Software for security platforms supports NAT and PAT； a traditional router does not support NAT or PAT.
    • B、JUNOS Software for security platforms does not forward traffic by default； a traditional router forwards traffic by default.
    • C、JUNOS Software for security platforms uses session-based forwarding； a traditional router uses packet-based forwarding.
    • D、JUNOS Software for security platforms performs route lookup for every packet； a traditional router performs route lookup only for the first packet.

    正确答案:B,C

  • 第21题：

    Which element occurs first during the first-packet-path processing?（）

    • A、destination NAT
    • B、forwarding lookup
    • C、route lookup
    • D、SCREEN options

    正确答案:D

  • 第22题：

    问答题
    What field in IP packet is prevent the packet from a route to router forever？

    正确答案： TTL （time to live）.
    解析： 暂无解析

  • 第23题：

    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.


    正确答案： B
    解析： 暂无解析

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