READ Free Dumps For CISCO- 100-105

Question ID 14552	When configuring NAT, the Internet interface is considered to be what?
Option A	local
Option B	inside
Option C	global
Option D	outside
Option F	Answer : D Explanation: The first step to deploy NAT is to define NAT inside and outside interfaces. You may find it easiest to define your internal network as inside, and the external network as outside. However, the terms internal and external are subject to arbitration as well. This figure shows an example of this. 2a.gif Reference: http://www.cisco.com/c/en/us/support/docs/ip/network-address-translation- nat/13772-12.html#topic2
Correct Answer	D

Explanation

Question ID 14553	The ip helper-address command does what?
Option A	assigns an IP address to a host
Option B	resolves an IP address from a DNS server
Option C	relays a DHCP request across networks
Option D	resolves an IP address overlapping issue
Correct Answer	C

Explanation Explanation: http://cisconet.com/tcpip/dhcp/107-how-to-use-ip-helper-address-to-connect-remote-dhcp- server.html When the DHCP client sends the DHCP request packet, it doesnt have an IP address. So it uses the all-zeroes address, 0.0.0.0, as the IP source address. And it doesnt know how to reach the DHCP server, so it uses a general broadcast address, 255.255.255.255, for the destination. So the router must replace the source address with its own IP address, for the interface that received the request. And it replaces the destination address with the address specified in the ip helper-address command. The client devices MAC address is included in the payload of the original DHCP request packet, so the router doesnt need to do anything to ensure that the server receives this information. The router then relays the DHCP request to the DHCP server.

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