单选题When does the E-series router start monitoring DHCP traffic using the DHCP External function?（）A When the discovery packet enters the router from the DHCP client.B Only when the offer packet enters the router from the DHCP server.C When the acknowledge

题目
单选题
When does the E-series router start monitoring DHCP traffic using the DHCP External function?（）
A

When the discovery packet enters the router from the DHCP client.

B

Only when the offer packet enters the router from the DHCP server.

C

When the acknowledge packet enters the router from the DHCP server.

D

Only when the discovery packet leaves the router going to the DHCP server.

相似考题

1.An internet is a combination of networks connected by (71) .When a datagram goes from a source to a (72) ，it will probably pass many (73) until it reaches the router attached to the destination network．A router receives a (74) from a network and passes it to another network．A router is usually attached to several networks．When it receives a packet，to which network should it pass the packet? The decision is based on optimization： Which of the available (75) is the optimum pathway?A．modemsB．routersC．switchesD．computers

2.When controlling the virtual router assignment for a PPP over ATM client, which mechanism does the router use first?()A. profileB. domain mapC. DHCP serverD. RADIUS server

3.When does the E－series router start monitoring DHCP traffic using the DHCP External function?()A. When the discovery packet enters the router from the DHCP client.B. Only when the offer packet enters the router from the DHCP server.C. When the acknowledge packet enters the router from the DHCP server.D. Only when the discovery packet leaves the router going to the DHCP server.

4.How does the ERX Edge Router interact with subscriber IP addresses assigned by an external DHCP server?()A.It monitors messages from the external server and updates the routing table as needed.B.It maintains the leases for the DHCP server and reassigns addresses to new subscribers.C.It sends keep alives to the subscriber and makes the address available when the subscriber stops responding.D.It sends keep alives to the subscriber and removes the host route when the subscriber stops responding.

更多“单选题When does the E-series router start monitoring DHCP traffic using the DHCP External function?（）A When the discovery packet enters the router from the DHCP client.B Only when the offer packet enters the router from the DHCP server.C When the acknowledge”相关问题

  • 第1题：

    Which CLI command enables the DHCP External Server function on an E－series router?()

    A. service dhcp-external

    B. set dhcp external server

    C. set dhcp-external server

    D. dhcp external server


    参考答案：A

  • 第2题：

    How does the ERX Edge Router interact with an external DHCP server in a Bridged 1483 network?()

    A.It maintains DHCP leases on behalf of subscribers.

    B.It initiates DHCP requests on behalf of subscribers.

    C.It passes DHCP traffic to and from the server;you must configure static host routes.

    D.It passes DHCP traffic to and from the server and inserts host routes into its routing table.


    参考答案：D

  • 第3题：

    In what situation would the command ip helper-address be required？（Choose the best answer.）（）

    • A、Only when there is a duplicate IP address caused by a combination of static and dynamic IPaddress allocations
    • B、On each router that exists between the client and the server
    • C、Only when a router separates the client from the server
    • D、Only if the DHCP sever issues a DHCPNAK to the initial request
    • E、Only when the client is on the same subnet as the server
    • F、Only when the DHCP pool is out of IP addresses

    正确答案:C

  • 第4题：

    Which CLI command enables the DHCP External Server function on an E-series router?（）

    • A、service dhcp-external
    • B、set dhcp external server
    • C、set dhcp-external server
    • D、dhcp external server

    正确答案:A

  • 第5题：

    How does the ERX Edge Router interact with subscriber IP addresses assigned by an external DHCP server?（）

    • A、It monitors messages from the external server and updates the routing table as needed.
    • B、It maintains the leases for the DHCP server and reassigns addresses to new subscribers.
    • C、It sends keep alives to the subscriber and makes the address available when the subscriber stops responding.
    • D、It sends keep alives to the subscriber and removes the host route when the subscriber stops responding.

    正确答案:A

  • 第6题：

    When does the E-series router start monitoring DHCP traffic using the DHCP External function?（）

    • A、When the discovery packet enters the router from the DHCP client.
    • B、Only when the offer packet enters the router from the DHCP server.
    • C、When the acknowledge packet enters the router from the DHCP server.
    • D、Only when the discovery packet leaves the router going to the DHCP server.

    正确答案:D

  • 第7题：

    In a Bridged 1483 network, which set of configuration commands allows the router to forward requests from the PC to an external DHCP server at 3.3.3.3?（）

    • A、set dhcp relay 3.3.3.3 set dhcp relay agent
    • B、enable dhcp relay agent set dhcp relay agent
    • C、set dhcp server 3.3.3.3 enable dhcp relay agent
    • D、enable dhcp server 3.3.3.3 enable dhcp relay agent

    正确答案:A

  • 第8题：

    单选题
    In a Bridged 1483 network, which set of configuration commands allows the router to forward requests from the PC to an external DHCP server at 3.3.3.3?（）
    A

    set dhcp relay 3.3.3.3 set dhcp relay agent

    B

    enable dhcp relay agent set dhcp relay agent

    C

    set dhcp server 3.3.3.3 enable dhcp relay agent

    D

    enable dhcp server 3.3.3.3 enable dhcp relay agent


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    When is the BA Classifier engaged for identifying the forwarding class of traffic in a Juniper router?（）
    A

    after a packet is identified by a multifield classifier

    B

    after the traffic passes though a shaper

    C

    prior to ingress policing of traffic

    D

    while the packet is stored in the switching fabric of the router


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Which CLI command enables the DHCP External Server function on an E-series router?（）
    A

    service dhcp-external

    B

    set dhcp external server

    C

    set dhcp-external server

    D

    dhcp external server


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    How does the ERX Edge Router interact with subscriber IP addresses assigned by an external DHCP server?（）
    A

    It monitors messages from the external server and updates the routing table as needed.

    B

    It maintains the leases for the DHCP server and reassigns addresses to new subscribers.

    C

    It sends keep alives to the subscriber and makes the address available when the subscriber stops responding.

    D

    It sends keep alives to the subscriber and removes the host route when the subscriber stops responding.


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    The ERX Edge Router in your Bridged 1483 network has multiple external DHCP servers configured.During discovery, which algorithm does the router use to decide which DHCP server to send packets to?（）
    A

    direct mode

    B

    round robin

    C

    weighted round robin

    D

    No algorithm is used.


    正确答案： B
    解析： 暂无解析

  • 第13题：

    The ERX Edge Router in your Bridged 1483 network has multiple external DHCP servers configured.During discovery, which algorithm does the router use to decide which DHCP server to send packets to?()

    A. direct mode

    B. round robin

    C. weighted round robin

    D. No algorithm is used.


    参考答案：D

  • 第14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


    参考答案：B

  • 第15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16题：

    How does the ERX Edge Router interact with an external DHCP server in a Bridged 1483 network？（）

    • A、It maintains DHCP leases on behalf of subscribers.
    • B、It initiates DHCP requests on behalf of subscribers.
    • C、It passes DHCP traffic to and from the server;you must configure static host routes.
    • D、It passes DHCP traffic to and from the server and inserts host routes into its routing table.

    正确答案:D

  • 第17题：

    The ERX Edge Router in your Bridged 1483 network has multiple external DHCP servers configured.During discovery, which algorithm does the router use to decide which DHCP server to send packets to?（）

    • A、direct mode
    • B、round robin
    • C、weighted round robin
    • D、No algorithm is used.

    正确答案:D

  • 第18题：

    How does the ERX Edge Router interact with subscriber IP addresses assigned by an externa lDHCP server?（）

    • A、It monitors messages from the external server and updates the routing table as needed.
    • B、It maintains the leases for the DHCP server and reassigns addresses to new subscribers.
    • C、It sends keepalives to the subscriber and makes the address available when the subscriber stops responding.
    • D、It sends keepalives to the subscriber and removes the host route when the subscriber stops responding.

    正确答案:A

  • 第19题：

    When controlling the virtual router assignment for a PPP over ATM client, which mechanism does the router use first?（）

    • A、profile
    • B、domain map
    • C、DHCP server
    • D、RADIUS server

    正确答案:B

  • 第20题：

    单选题
    How does the ERX Edge Router interact with an external DHCP server in a Bridged 1483 network？（）
    A

    It maintains DHCP leases on behalf of subscribers.

    B

    It initiates DHCP requests on behalf of subscribers.

    C

    It passes DHCP traffic to and from the server;you must configure static host routes.

    D

    It passes DHCP traffic to and from the server and inserts host routes into its routing table.


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    An internet is a combination of networks connected by (1). When a datagram goes from a source to a (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway? 空白（2）处应选择（）
    A

    user

    B

    host

    C

    city

    D

    destination


    正确答案： D
    解析： 互联网是由不同的网络通过路由器互联起来的。当数据包从源地发往目的地时，在到达目的地网络之前它可能经过多个路由器。路由器从一个网络接收到数据包之后就转发到另外一个网络。然而，一个路由器往往与几个网络连接，当路由器接收到一个数据时，它应该将数据包传向哪个网络呢？这将基于路径最优化决策。

  • 第22题：

    单选题
    How does the ERX Edge Router interact with subscriber IP addresses assigned by an externa lDHCP server?（）
    A

    It monitors messages from the external server and updates the routing table as needed.

    B

    It maintains the leases for the DHCP server and reassigns addresses to new subscribers.

    C

    It sends keepalives to the subscriber and makes the address available when the subscriber stops responding.

    D

    It sends keepalives to the subscriber and removes the host route when the subscriber stops responding.


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    When does the E-series router start monitoring DHCP traffic using the DHCP External function?（）
    A

    When the discovery packet enters the router from the DHCP client.

    B

    Only when the offer packet enters the router from the DHCP server.

    C

    When the acknowledge packet enters the router from the DHCP server.

    D

    Only when the discovery packet leaves the router going to the DHCP server.


    正确答案： B
    解析： 暂无解析

  • 第24题：

    单选题
    In what situation would the command ip helper-address be required？（Choose the best answer.）（）
    A

    Only when there is a duplicate IP address caused by a combination of static and dynamic IPaddress allocations

    B

    On each router that exists between the client and the server

    C

    Only when a router separates the client from the server

    D

    Only if the DHCP sever issues a DHCPNAK to the initial request

    E

    Only when the client is on the same subnet as the server

    F

    Only when the DHCP pool is out of IP addresses


    正确答案： B
    解析： 暂无解析

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