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The DHCP server service is not enabled. | |
The inside interface for DCHP is not defined. | |
The DHCP pool is not bound to the interface. | |
The pool does not have a default router defined for the clients. | |
All the host addresses have been excluded from the DHCP pool. |
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The addresses are statically assigned by the network administrator. | |
The DHCP server dynamically assigns the addresses. | |
The addresses must be listed under the DHCP pool of addresses before they are available for static assignment. | |
The addresses must be listed under the DHCP pool of addresses before they are available for dynamic assignment. |
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1 | |
6 | |
7 | |
8 | |
9 |
What are two benefits of NAT? (Choose two.) | |
It saves public IP addresses. | |
It adds a degree of privacy and security to a network. | |
It increases routing performance. | |
It makes troubleshooting routing issues easier. | |
It makes tunneling with IPsec less complicated. |
What is true regarding the differences between NAT and PAT? | |
PAT uses the word "overload" at the end of the access-list statement to share a single registered address. | |
Static NAT allows an unregistered address to map to multiple registered addresses. | |
Dynamic NAT allows hosts to receive the same global address each time external access is required. | |
PAT uses unique source port numbers to distinguish between translations. |
What type of NAT should a network administrator use to ensure that a web server on the inside network is always available to the outside network? | |
NAT overload | |
static NAT | |
dynamic NAT | |
PAT |
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10.1.1.2 | |
192.168.0.100 | |
209.165.20.25 | |
any address in the 10.1.1.0 network |
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Traffic from the 10.1.1.0 network will be translated. | |
Traffic from the 209.165.200.0 network will be translated. | |
Permitted traffic gets translated to a single inside global IP address. | |
A pool of inside global IP addresses from the 10.1.1.0 network will be used for translation. | |
External users from the 209.165.200.0 network can reach private addresses on the 10.1.1.0 and 10.1.2.0 networks. |
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defines which addresses can be translated | |
defines which addresses are allowed into the router | |
defines which addresses are assigned to a NAT pool | |
defines which addresses are allowed out of the router |
A technician has been told by a supervisor to always clear any dynamic translations before attempting to troubleshoot a failed NAT connection. Why has the supervisor issued these instructions? | |
The supervisor wants to clear any confidential information that may be seen by the technician. | |
Because entries can be cached for long periods of time, the supervisor wants to prevent decisions being made based on old data. | |
The translation table may be full and is unable to make new translations until space is available. | |
Clearing the translations causes the starting configuration to be reread and may correct translation problems that have occurred. |
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ip nat pool statement | |
access-list statement | |
ip nat inside is on the wrong interface | |
interface s0/0/2 should be a private IP address |
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A user on the inside sees web traffic coming from 192.168.1.3 using port 8080. | |
The address 172.16.1.1 is translated into an address from the pool beginning with 192.168.1.3. | |
A user on the outside network sees a request addressed from 192.168.1.3 using port 80. | |
A user on the outside must address traffic to port 8080 to reach the address 172.16.1.1. |
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0 | |
1 | |
2 | |
3 | |
4 |
A network administrator wants to connect two IPv6 islands. The easiest way is through a public network that uses only IPv4 equipment. What simple solution solves the problem? | |
Replace the devices on the public network with devices that support IPv6. | |
Configure RIPng on the border routers of each IPv6 island. | |
Configure the routers to take advantage of dual-stack technology. | |
Use tunneling to encapsulate the IPv6 traffic in the IPv4 protocol. |
After activating IPv6 routing on a Cisco router and programming IPv6 addresses on multiple interfaces, what is the remaining step to activate RIPng? | |
Enter the interface programming mode for each IPv6 interface and enable IPng RIP. | |
Enter the ipv6 router rip name command and then use network statements to activate RIPng on the interfaces. | |
Enter the router rip command, and then activate RIPng using the version command. RIPng then automatically runs on all IPv6 interfaces. | |
Enter the interface programming mode for each IPv6 interface and enable the multicast group FF02::9, and then activate RIPng globally using the ipv6 router rip name command. |
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dynamic NAT | |
NAT with overloading | |
open port 20 | |
open port 21 | |
open port 23 | |
NAT with port forwarding |
| |
10.1.1.1 | |
172.30.20.2 | |
192.168.1.2 | |
255.255.255.255 |
| |
10.0.0.125 | |
179.9.8.95 | |
179.9.8.98 | |
179.9.8.101 | |
179.9.8.112 |
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It will randomly generate a 64 bit interface ID. | |
It will assign an address from the pool of IPv6 private addresses to the interface. | |
It will assign only the registry prefix of the IPv6 Global Unicast address to the interface. | |
The configuration will derive the interface portion of the IPv6 address from the MAC address of the interface. |
How many bits of an IPv6 address are used to identify the interface ID? | |
32 | |
48 | |
64 | |
128 |
Your organization is issued the IPv6 prefix of 2001:0000:130F::/48 by your service provider. With this prefix, how many bits are available for your organization to create subnetworks? | |
8 | |
16 | |
80 | |
128 |