单选题Why would a rogue host that is running a DHCP server on a campus LAN network present a security risk？（）AIt may allocate IP addresses from an unknown subnet to the users.BAll multicast traffic can be sniffed by using the DHCP multicast capabilities.CThe CPU utilization of the first hop router can be overloaded by exploiting DHCP relay open ports.DA potential man-in-the-middle attack can be used against the clients.
单选题
Why would a rogue host that is running a DHCP server on a campus LAN network present a security risk？（）
A
It may allocate IP addresses from an unknown subnet to the users.
B
All multicast traffic can be sniffed by using the DHCP multicast capabilities.
C
The CPU utilization of the first hop router can be overloaded by exploiting DHCP relay open ports.
D
A potential man-in-the-middle attack can be used against the clients.
参考解析
解析：
暂无解析
相关考题：
What is true about the functions provided by a DHCP Relay Proxy over the DHCP Relay agent?() A. Monitors and manages leases.B. Creates host route dynamically after address assignment.C. Provides an IP address from a pool.D. Must be on same subnet as DHCP server
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.
Which of the following devices would MOST likely integrate a DHCP server?() A.RouterB.HubC.SwitchD.Bridge
The Dynamic Host Configuration Protocol provides configuration parameters to Intemet （ ）. DHCP consists of two components: a （ ） for delivering host-specific configuration parameters from a DHCP server to a host and a mechanism for allocation of network addresses to hosts. DHCP is built on a client-server model, where designated DHCP server hosts allocate network addresses and deliver （ ） parameters to dynamically configured hosts. DHCP supports three mechanisms for IP address allocation. In automatic allocation, DHCP assigns a （ ） IP address to a client. In dynamic allocation, DHCP assigns an IP address to a client for a limited period of time. In manual allocation, a clients IP address is assigned by the network （ ）, and DHCP is used simply to convey the assitped address to the client.A.switchB.termmalC.hostsD.usersA.routerB.protocolC.hostD.mechanismA.controlB.broadcastC.configurationD.transmissionA.permanentB.dynamicC.cormectionD.sessionA.controllerB.userC.hostD.administrator
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.
The Dynamic Host Configuration Protocol provides configuration parameters to Internet（ ）.DHCP consists of two components:a（ ）for delivering host-specifie configuration parameters from a DHCP server to a host and a mechanism for allocation of network addresses to hosts.DHCP is built on a client-server model,where designated DHCP server hosts allocate network addresses and deliver（ ）parameters to dynamically configured hosts.DHCP supports three mechanisms for IP address allocation.In“automatic allocation”,DHCP assigns a（本题）IP address to client.In“dynamic allocation”,DHCP assigns an IP address to a client for a limited period of time.In“manual allocation”,a client’s IP address is assigned by the network（ ）,and DHCP is used simply to convey the assigned address to the client.A.permanentB.dynamicC.connectionD.session
Which of the following types of attacks does DHCP snooping prevent？（Choose all that apply.）（）A、Attacker sends multiple DHCP requests flooding DHCP serverB、Attacker connects rogue server initiating DHCP requestsC、Attacker connects rogue server replying to DHCP requestsD、Attacker sends DHCP jam signal causing DHCP server to crashE、Attacker sends gratuitous ARP replies， thereby jamming the DHCP serverF、Attacker sends unsolicited DHCP replies， thereby jamming the DHCP server
Multiple users are trying to telnet to the AIX server. They are able to ping the server successfully， but are getting the following error message： telnet： connect： A remote host refused an attempted connect operation Which of the following could be the cause of this problem？（）A、The routing table on the AIX server is incorrect.B、The IP address on the network adapter is incorrect.C、The portmap daemon is not running on the AIX server.D、The inetd daemon is not running on the AIX server.
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.
How dose a DHCP server dynamically assign IP address to host?（）A、Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.B、Addresses are assigned for a fixed period of time.At the end of period,a newquest for an address must be made,and another address is then assigned.C、Addresses are leased to host.A host will usually keep the same address by periodically contacting the DHCP sever to renew the lease.D、Addresses are permanently assigned so that the host uses the same address at all times.
Why would a rogue host that is running a DHCP server on a campus LAN network present a security risk？（）A、It may allocate IP addresses from an unknown subnet to the users.B、All multicast traffic can be sniffed by using the DHCP multicast capabilities.C、The CPU utilization of the first hop router can be overloaded by exploiting DHCP relay open ports.D、A potential man-in-the-middle attack can be used against the clients.
When running a Windows server， which option is used with the ping command to convert numerical addresses to host names？（）A、 -rB、 -aC、 -vD、 -n
A workstation is added to a newly created subnet using 192.168.100.0/24. A DHCP server is available on subnet 192.168.101.0/24. The user is unable to lease an address from the DHCP server. Which of the following would BEST resolve the problem？（）A、 Assign the workstation a static IP address.B、 Add a second DHCP server to the 192.168.101.0/24 subnet.C、 Add a DHCP relay to the 192.168.100.0/24 subnet.D、 Add a DHCP server to the 192.168.100.0/24 subnet.
Which of the following devices would MOST likely integrate a DHCP server?（）A、RouterB、HubC、SwitchD、Bridge
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.
Multiple users are trying to telnet to the AIX server. They are able to ping the server successfully， but are getting the following error message： telnet： connect： A remote host refused an attempted connect operation Which of the following options could be the cause of this problem（）A、The routing table on the AIX server is incorrect.B、The IP address in the /etc/hosts file is incorrect，C、The portmap daemon is not running on the AIX server.D、The inetd daemon is not running on the AIX server.
单选题A workstation is added to a newly created subnet using 192.168.100.0/24. A DHCP server is available on subnet 192.168.101.0/24. The user is unable to lease an address from the DHCP server. Which of the following would BEST resolve the problem？（）A Assign the workstation a static IP address.B Add a second DHCP server to the 192.168.101.0/24 subnet.C Add a DHCP relay to the 192.168.100.0/24 subnet.D Add a DHCP server to the 192.168.100.0/24 subnet.
多选题Which of the following types of attacks does DHCP snooping prevent？（Choose all that apply.）（）AAttacker sends multiple DHCP requests flooding DHCP serverBAttacker connects rogue server initiating DHCP requestsCAttacker connects rogue server replying to DHCP requestsDAttacker sends DHCP jam signal causing DHCP server to crashEAttacker sends gratuitous ARP replies， thereby jamming the DHCP serverFAttacker sends unsolicited DHCP replies， thereby jamming the DHCP server
单选题Refer to the exhibit。A problem with network connectivity has been observed.It is suspected that the cable connected to switch port Fa0/9 on Switch 1 disconnected.What would be an effect of tis cable being disconnected?（）A Host B would not be able to access the server in VLAN9 until the cable is reconnectedB For less than a minute ,Host B would not be able to access the server in VLAN9.Then normal network function would resume.C Communication between VLAN3 and the other VLANs would be disabledD The transfer of files from Host B to the server in VLAN9 would be significantly slower.
单选题When running a Windows server， which option is used with the ping command to convert numerical addresses to host names？（）A-rB-aC-vD-n
单选题How does the ERX Edge Router interact with an external DHCP server in a Bridged 1483 network？（）AIt maintains DHCP leases on behalf of subscribers.BIt initiates DHCP requests on behalf of subscribers.CIt passes DHCP traffic to and from the server;you must configure static host routes.DIt passes DHCP traffic to and from the server and inserts host routes into its routing table.
单选题What is true about the functions provided by a DHCP Relay Proxy over the DHCP Relay agent?（）AMonitors and manages leases.BCreates host route dynamically after address assignment.CProvides an IP address from a pool.DMust be on same subnet as DHCP server
单选题How dose a DHCP server dynamically assign IP address to host？（）AAddresses are allocated after a negotiation between the server and the host to determine the length ofthe agreement.BAddresses are assigned for a fixed period of time.At the end of period，a newquest for an address mustbe made ，and another address is then assigned.CAddresses are leased to host.A host will usually keep the same address by periodicallycontacting theDHCP sever to renew the lease.DAddresses are permanently assigned so that the host uses the same address at all times.
单选题How does a DHCP server dynamically assign IP addresses to hosts?（）AAddresses are permanently assigned so that the host uses the same address at all times.BAddresses 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.CAddresses are leased to hosts. A host will usually keep the same address by periodically contacting the DHCP server to renew the lease.DAddresses are allocated after a negotiation between the server and the host to determine the length of the agreement.
单选题When running a Windows server， which option is used with the ping command to convert numerical addresses to host names？（）A -rB -aC -vD -n