How does a DHCP server dynamically assign IP addresses to hosts?（）A、Addresses are permanently assigned so that the host uses the same address at all times.B、Addresses are assigned for a fixed period of time. At the end of the period, a new request for an

题目

How does a DHCP server dynamically assign IP addresses to hosts?（）

  • A、Addresses are permanently assigned so that the host uses the same address at all times.
  • B、Addresses are assigned for a fixed period of time. At the end of the period, a new request for an address must be made, and another address is then assigned.
  • C、Addresses are leased to hosts. A host will usually keep the same address by periodically contacting the DHCP server to renew the lease.
  • D、Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.
相似考题

1.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

2.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 modeB. round robinC. weighted round robinD. No algorithm is used.

3.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 agentB. enable dhcp relay agent set dhcp relay agentC. set dhcp server 3.3.3.3 enable dhcp relay agentD. enable dhcp server 3.3.3.3 enable dhcp relay agent

4.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.

更多“How does a DHCP server dynamical”相关问题

  • 第1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2题：

    Which is the result of enabling IP Source Guard on an untrusted switch port that does not have DHCP snooping enabled？（）

    • A、DHCP requests will be switched in the software， which may result in lengthy response times.
    • B、The switch will run out of ACL hardware resources.
    • C、All DHCP requests will pass through the switch untested.
    • D、The DHCP server reply will be dropped and the client will not be able to obtain an IP address.

    正确答案:D

  • 第3题：

    A new Aironet 1200 series AP has been installed in the Company WLAN.  What happens when this  device is connected to the LAN， with a default configuration？（）

    • A、 The access point will attempt to download an encryption key from the nearest wireless server.
    • B、 The access point makes several attempts to get an IP address from the DHCP server. If the  access point does not receive an address， it assigns itself the IP address 10.0.0.1 for 5 minutes.
    • C、 The access point will attempt to connect to the nearest wireless server using LEAP  authentication.
    • D、 The access point requests an IP address from the DHCP server. If the access point does not  receive an address， it continues to send requests indefinitely.
    • E、 None of the other alternatives apply

    正确答案:D

  • 第4题：

    Which two tasks does the Dynamic Host Configuration Protocol perform?（）

    • A、Set the IP gateway to be used by the network.
    • B、Perform host discovery used DHCPDISCOVER message.
    • C、Configure IP address parameters from DHCP server to a host.
    • D、Provide an easy management of layer 3 devices.
    • E、Monitor IP performance using the DHCP server.
    • F、Assign and renew IP address from the default pool.

    正确答案:C,F

  • 第5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6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7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8题：

    多选题
    Which of the following types of attacks does DHCP snooping prevent？（Choose all that apply.）（）
    A

    Attacker sends multiple DHCP requests flooding DHCP server

    B

    Attacker connects rogue server initiating DHCP requests

    C

    Attacker connects rogue server replying to DHCP requests

    D

    Attacker sends DHCP jam signal causing DHCP server to crash

    E

    Attacker sends gratuitous ARP replies， thereby jamming the DHCP server

    F

    Attacker sends unsolicited DHCP replies， thereby jamming the DHCP server


    正确答案： E,C
    解析： 暂无解析

  • 第9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10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11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： D
    解析： 暂无解析

  • 第12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： A
    解析： 暂无解析

  • 第13题：

    How does a DHCP server dynamically assign IP addresses to hosts?()

    A.Addresses are permanently assigned so that the host uses the same address at all times.

    B.Addresses are assigned for a fixed period of time. At the end of the period, a new request for an address must be made, and another address is then assigned.

    C.Addresses are leased to hosts. A host will usually keep the same address by periodically contacting the DHCP server to renew the lease.

    D.Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.


    参考答案：C

  • 第14题：

    Which of the following types of attacks does DHCP snooping prevent？（Choose all that apply.）（）

    • A、Attacker sends multiple DHCP requests flooding DHCP server
    • B、Attacker connects rogue server initiating DHCP requests
    • C、Attacker connects rogue server replying to DHCP requests
    • D、Attacker sends DHCP jam signal causing DHCP server to crash
    • E、Attacker sends gratuitous ARP replies， thereby jamming the DHCP server
    • F、Attacker sends unsolicited DHCP replies， thereby jamming the DHCP server

    正确答案:A,C

  • 第15题：

    You have a DHCP server named Server1 and an application server named Server2. Both servers run Windows Server 2008. The DHCP server contains one scope. you need to ensure that server2 alwaysreceives the same IP address. Server2 must receive its DNS settings and its Wins settings from DHCP. What should you do？（）

    • A、Create a multicast scope
    • B、Assign a Static IP address to Server2
    • C、Create an exclusion range in the DHCP scope
    • D、Create a DHCP reservation in the DHCP scope.

    正确答案:D

  • 第16题：

    How is DHCP enabled on a server？（）

    • A、Use network options to enable ipforwarding
    • B、Edit /etc/rc.tcpip and enable dhcpsd
    • C、Edit /etc/rc.nfs increase the number of biod daemons
    • D、Use SMIT to set the server to use DHCP instead of static IP addresses

    正确答案:B

  • 第17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：

    Your company has a single Active Directory domain. The domain runs at the functional level of Windows Server 2003. You install the DHCP service on a server named DHCP1. You attempt to start the DHCP service， but it does not start. You need to ensure that the DHCP service starts. What should you do？（）

    • A、Restart DHCP1
    • B、Configure a scope on DHCP1
    • C、Activate the scope on DHCP1
    • D、Authorize DHCP1 in the Active Directory domain

    正确答案:D

  • 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
    How does a DHCP server dynamically assign IP addresses to hosts?（）
    A

    Addresses are permanently assigned so that the host uses the same address at all times.

    B

    Addresses are assigned for a fixed period of time. At the end of the period, a new request for an address must be made, and another address is then assigned.

    C

    Addresses are leased to hosts. A host will usually keep the same address by periodically contacting the DHCP server to renew the lease.

    D

    Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    In a Bridged 1483 service offering， how does an end user’s workstation dynamically obtain an IP address？ （）
    A

    RADIUS server

    B

    external DHCP server

    C

    address pool on the DSL modem

    D

    address pool on the provider router


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    You have two servers named Server1 and Server2 that run Windows Server 2003 Service Pack 2 (SP2). Server1 is configured as a DHCP server. You plan to decommission the DHCP service on Server1. You need to move the DHCP server configuration to Server2. The configuration must include all configured scopes, leases, and DHCP options. What should you do first? （）
    A

    From the DHCP snap-in, export list.

    B

    From the DHCP snap-in, back up the server.

    C

    From Windows Explorer, copy the %systemroot%/System32/Dhcp/DHCP.mdb file.

    D

    From Windows Explorer, copy the %systemroot%/System32/Dhcp/backup/dhcpcfg file.


    正确答案： A
    解析： 暂无解析

  • 第24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

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