网络管理员定义“no ip directed broadcast”以减轻下面哪种攻击?()A、DiecastB、SmurfC、BatcastD、Coke
网络管理员定义“no ip directed broadcast”以减轻下面哪种攻击?()
- A、Diecast
- B、Smurf
- C、Batcast
- D、Coke
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阅读以下说明,回答问题1~3,将答案填入对应的解答栏内。某公司由总部和分支机构构成,通过IPSec实现网络安全,网络拓扑结构如图4-1所示。路由器之间的地址分配如表4-1所示。总部端路由器的部分配置如下,解释配置中语句部分含义。crypto isakmp policy 1 (1)authentication pre-share (2)group 2crypto isakmp key test123 address 202.96.1.2 (3)crypto ipsec transform-set VPNtag ah-md5-hmac esp-des (4)crypto map VPNdemp 10 ipsec-isakmpset peer 202.96.1.2 (5)set transform-set VPNtagmatch address 101!interface Tunnel0ip address 192.168.1.1 255.255.255.0 (6)no ip directed-broadcasttunnel source 202.96.1.1tunnel destination 202.96.1.2 (7)crypto map VPNdemointerface serial0/0ip address 202.96.1.1 255.255.255.252no ip directed-broadcastcrypto map VPNdemo (8)!interface Ethernet0/1ip address 168.1.1.1 255.255.255.0no ip directed-broadcastinterface Ethernet0/0ip address 172.22.1.100 255.255.255.0no ip directed-broadcast!ip classlessip route 0.0.0.0 0.0.0.0 202.96.1.2 (9)ip route 172.22.2.0 255.255.0.0 192.168.1.2 (10)access-lost 101 permit gre host 202.96.1.1 host 202.96.1.2
在图8-7所示的网络拓扑结构的分支机构路由器上,正确的拨号映射配置语句是(53)。A.dialer map ip 192.168.0.2 name branch MODEM-script. dialout broadcast 2083150B.dialer map ip 192.168.0.2 name center MODEM-script. dialout broadcast 2083703C.dialer map ip 192.168.0.1 name branch MODEM-script. dialout broadcast 2083150D.dialer map ip 192.168.0.1 name center MODEM-script. dialout broadcast 2083703
If all OSPF routers on a broadcast network have the same OSPF priority, what parameter is used to determine the new BDR at the time of a DR failure?() A. area IDB. router IDC. loopback addressD. IP address of interface on broadcast network
When a DHCP server is configured, which two IP addresses should never be assignable to hosts?() A. network or subnetwork IP addressB. broadcast address on the networkC. IP address leased to the LAND. IP address used by the interfacesE. manually assigned address to the clientsF. designated IP address to the DHCP server
When a DHCP server is configured, which two IP addresses should never be assignable to hosts? ()A、network or subnetwork IP addressB、broadcast address on the networkC、IP address leased to the LAND、IP address used by the interfacesE、manually assigned address to the clientsF、designated IP address to the DHCP server
If all OSPF routers on a broadcast network have the same OSPF priority, what parameter is used to determine the new BDR at the time of a DR failure?()A、area IDB、router IDC、loopback addressD、IP address of interface on broadcast network
A server has been assigned the 192.168.100.127/25 IP address. The server is experiencing strange network connectivity related problems. Which of the following would BEST describe the problem?()A、IP address is classful.B、IP address is a subnet broadcast address.C、IP address is a subnet network address.D、IP address is classless
What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?()A、defines the source IP address that is used in all broadcast packets on DLCI 202B、defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP addressC、defines the destination IP address that is used in all broadcast packets on DLCI 202D、defines the DLCI on which packets from the 192.168.1.2 IP address are received
Which content networking device allows bandwidth configuration settings so that streaming content will not interfere with other network traffic?()A、 IP/TV Control ServerB、 Content Distribution ManagerC、 Content EngineD、 IP/TV Broadcast Server
What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?()A、defines the source IP address that i s used in all broadcast packets on DLCI 202B、defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP addressC、defines the destination IP address that is used in all broadcast packets on DLCI 202D、defines the DLCI on which packets from the 192.168.1.2 IP address are received
The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router. Which of the following statements is true concerning this command()。A、This command should be executed from the global configuration modeB、The IP address 10.121.16.8 is the local router port used to forward dataC、102 is the remote DLCI that will receive the informationD、This command is required for all Frame Relay configurationsE、The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC
A server has been assigned the 192.168.100.127/25 IP address. The server is experiencing strange network connectivity related problems. Which of the following would BEST describe the problem?()A、 IP address is classful.B、 IP address is a subnet broadcast address.C、 IP address is a subnet network address.D、 IP address is classless.
On a newly installed AIX V4 machine, which of the following default values applies to the ipforwarding network option?()A、 The ipforwarding is off by default. B、 The ipforwarding is set on by default. C、 The value is dynamically determined at boot time by DHCP. D、 The value is equal to the setting of the directed_broadcast runtime attribute.
A machine has just been installed with AIX, and no system parameters have been changed. In order to enable routing function, which of the following "no" options should be changed?()A、 set bcastping to 1 B、 set ipforwarding to 1 C、 set rfc1323 to 1 D、 set directed_broadcast to 1
Three IS-IS routers on a broadcast segment have different priority values configured. Which router is elected the DIS on that broadcast segment?()A、the router with the lowest priorityB、the router with the highest priorityC、the router with the highest System IDD、the router with the highest IP address
单选题下列操作中可以禁用Cisco设备的路由重定向功能的操作是?()ARouter(config-iF.#no ip redirectsBRouter(config-iF.#no ip mask-replyCRouter(config-iF.#no ip directed-broadcastDRouter(config-iF.#no ip proxy-arp
单选题Three IS-IS routers on a broadcast segment have different priority values configured. Which router is elected the DIS on that broadcast segment?()Athe router with the lowest priorityBthe router with the highest priorityCthe router with the highest System IDDthe router with the highest IP address
单选题The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router. Which of the following statements is true concerning this command()。AThis command should be executed from the global configuration modeBThe IP address 10.121.16.8 is the local router port used to forward dataC102 is the remote DLCI that will receive the informationDThis command is required for all Frame Relay configurationsEThe broadcast option allows packets, such as RIP updates, to be forwarded across the PVC
单选题On a newly installed AIX V4 machine, which of the following default values applies to the ipforwarding network option?()A The ipforwarding is off by default. B The ipforwarding is set on by default. C The value is dynamically determined at boot time by DHCP. D The value is equal to the setting of the directed_broadcast runtime attribute.
单选题在CISCO设备的接口上防止SMURF攻击的命令()ARouter(Config-iF.#no ip directed-broadcastBRouter(Config-iF.#no ip proxy-arpCRouter(Config-iF.#no ip redirectsDRouter(Config-iF.#no ip mask-reply
单选题Which content networking device allows bandwidth configuration settings so that streaming content will not interfere with other network traffic?()A IP/TV Control ServerB Content Distribution ManagerC Content EngineD IP/TV Broadcast Server
单选题If all OSPF routers on a broadcast network have the same OSPF priority, what parameter is used to determine the new BDR at the time of a DR failure?()A area IDB router IDC loopback addressD IP address of interface on broadcast network
单选题Which of the following features would hide internal IP addresses from the Internet?()ANetwork Address TranslationBPort forwardingCQuality of ServiceDSSID broadcast
单选题A server has been assigned the 192.168.100.127/25 IP address. The server is experiencing strange network connectivity related problems. Which of the following would BEST describe the problem?()A IP address is classful.B IP address is a subnet broadcast address.C IP address is a subnet network address.D IP address is classless.