A. The summarized address for all internal subnetted addresses.
B. A private IP address assigned to a host on the inside network.
C. A registered address that represents an inside host to an outside network.
D. A unique IP address used on an internal network
E. Non of the above
第1题:
随着Internet迅速发展,公网IP地址短缺已成为一个十分突出的问题。为了解决这一问题,出现了多种解决方案。而使用路由器的NAT/NAPT(Network Address Translation/Network Address Port Translation)功能是其中一种解决方法。
如图5-1所示,某企业通过租用ISP的线路(获得的公网IP网段为:218.94.86.0/29,除去两个互联的IP地址),实现企业的电子商务。其中,有一对外的Web服务器(内网IP地址为192.168.0.100/24),一OA服务器(内网IP地址为192.168.0.101/24)。
以下是本端路由器的配置摘要,请解释其中部分语句的含义(“//”后为注释内容)。
version 11.2 //版本
!
hostname RouterCOM //路由器名称
!
interface Seria10 //串口0
ip address 218.94.86.2 255.255.255.248 //串口0的ip地址
ip nat outside (1)
!
interface FastEthernet 0 //快速以太口0
ip address 192.168.0.1 255.255.255.0 //快速以太口0的ip地址
ip nat inside (2)
!
access-list 1 permit 192.168.0.0 0.0.0.255 (3)
!
ip nat pool natpool 218.94.86.5 218.94.86.6 netmask 255.255.255.248
(4)
ip nat inside source static 192.168.0.100 218.94.86.3 (5)
ip nat inside source statiC 192.168.0.101 218.94.86.4
ip nat inside source list 1 pool natpool overload (6)
……(略)
end
第2题:
Refer to the exhibit. A network administrator has configured DHCP services on the router asshown. DHCP clients connected to the FastEthernet0/0 interface are working properly. DHCP clients connected to the FastEthernet0/1 interface are not receiving addresses.Which two statements contain recommendations that will solve the problem?()
A.The network shown in the output under the ip dhcp pool Central command should be changed to network 10.10.0.0 with a mask of 255.255.255.0
B.A second DHCP pool for network 10 .10.0.0/24 should be configured
C.An ip dhcp excluded - address global configuration command for network 10.10.0.0/24 should be issued
D.The ip helper -address 10.0.0.1 command should be issued so that the address can be added to the Fast Ethernet0/0 c onfiguration
E.The ip helper -address 10.0.0.1 command should be issued so that the address can be added to the Fast Ethernet0/1 configuration
第3题:
第4题:
What does the "Inside Global" address represent in the configuration of NAT?()
第5题:
Given the topology of a server (with IP 209.165.202.150) protected behind the inside interface of an ASA/PIX,and the Internet on the outside interface. Users on the Internet need to access the server at any time, but the firewall administrator does not want to NAT the address of the server - since itis currentlya public address. Which of the following commands can be used to accomplish this? ()
第6题:
Interface ge-0/0/2.0 of your device is attached to the Internet and is configured with an IP address and network mask of 71.33.252.17/24. A Web server with IP address 10.20.20.1 is running an HTTP service on TCP port 8080. The Web server is attached to the ge-0/0/0.0 interface of your device. You must use NAT to make the Web server reachable from the Internet using port translation. Which type of NAT must you configure?()
第7题:
What will happen if a private IP address is assigned to a public interface connected to an ISP?()
第8题:
When implementing 802.1X on Teleworker routers and using separate DHCP address pools for Teleworker and Home-user devices, traffic between devices can be restricted. How can you best accomplish this?()
第9题:
Addresses in a private range will be not routed on the Internet backbone.
Only the ISP router will have the capability to access the public network.
The NAT process will be used to translate this address in a valid IP address.
Several automated methods will be necessary on the private network.
A conflict of IP addresses happens, because other public routers can use the same range.
第10题:
nat (inside) 0 209.165.202.150 255.255.255.255
access-list no-nat permit ip host209.165.202.150 anynat(inside) 0 access-list no-nat
static(inside,outside) 209.165.202.150 209.165.202.150 netmask 255.255.255.255
no nat-control
nat (inside) 1 209.165.202.150 255.255.255.255
第11题:
the summarized address for all of the internal subnetted addresses
the MAC address of the router used by inside hosts to connect to the Internet
a globally unique, private IP address assigned to a host on the inside network
a registered address that represents an inside host to an outside network
第12题:
Source NAT with address shifting translates both the source IP address and the source port of a packet.
Source NAT with address shifting defines a one-to-one mapping from an original source IP address to a translated source IP address.
Source NAT with address shifting can translate multiple source IP addresses to the same translated IP address.
Source NAT with address shifting allows inbound connections to be initiated to the static source pool IP addresses.
第13题:
A. The router will rebroadcast any DHCP requests received by this interface out to all interfaces included in the ip helper - address commands.
B. The router will rebroadcast any UDP broadcasts received by this interface out to all interfaces included in the ip helper - address commands.
C. The router will unicast any DHCP requests received by this interface out to all addresses included in the ip helper - address commands.
D. This configuration will not do anything because the ip helper - address command needs to also be applied to the 192.168.23.1 IP address.
第14题:
A. permit all packets matching 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
第15题:
What is the function of the Cisco IOS command ip nat inside source static 10.1.1.5 172.35.16.5()。
第16题:
What is the function of the Cisco IOS command ip nat inside source static 10.1.1.5 172.35.16.5?()
第17题:
What is the purpose of a network mask?()
第18题:
In any NAT (network address translation) configuration, what is the Inside Global IP address?()
第19题:
The following configuration line was added to router R1 Access-list 101 permit ip 10.25.30.0 0.0.0.255 any What is the effect of this access list configuration?()
第20题:
It creates a global address pool for all outside NAT transactions.
It establishes a dynamic address pool for an inside static address.
It creates dynamic source translations for all inside local PAT transactions.
It creates a one-to-one mapping between an inside local address and an inside global address.
It maps one inside source address to a range of outside global addresses.
第21题:
It creates a global address pool for all outside NAT transactions
It establishes a dynamic address pool for an inside static address
It creates dynamic source translations for all inside local PAT transactions
It creates a one-to-one mapping between an inside local address and an inside global address
It maps one inside source address to a range of outside global addresses
第22题:
The summarized address for all internal subnetted addresses.
A private IP address assigned to a host on the inside network.
A registered address that represents an inside host to an outside network.
A unique IP address used on an internal network
Non of the above
第23题:
Use the custom application feature.
Configure static NAT for the host.
Use port address translation (PAT).
Use the address-persistent option.