networking

Which two statements accurately describe an advantage or a disadvantage when deploying NAT for IPv4 in a network? (Choose two.)

• NAT adds authentication capability to IPv4.

• NAT improves packet handling.

• NAT will impact negatively on switch performance.

• NAT introduces problems for some applications that require end-to-end connectivity.

• NAT provides a solution to slow down the IPv4 address depletion.

A network administrator wants to examine the active NAT translations on a border router. Which command would perform the task?

• Router# show ip nat translations

• Router# show ip nat statistics

• Router# clear ip nat translations

• Router# debug ip nat translations

What are two tasks to perform when configuring static NAT?

• Configure a NAT pool.

• Create a mapping between the inside local and outside local addresses.

• Identify the participating interfaces as inside or outside interfaces.

• Define the inside global address on the server

• Define the outside global address.

What is a disadvantage of NAT?

• There is no end-to-end addressing.

• The router does not need to alter the checksum of the IPv4 packets.

From the perspective of R1, the NAT router, which address is the inside global address?

• 192.168.0.10

• 192.168.0.1

• 209.165.200.225

• 209.165.200.254

Given the commands as shown, how many hosts on the internal LAN off R1 can have simultaneous NAT translations on R1?

• 8 hosts

• 16 hosts

• 32 hosts

• 64 hosts

A network administrator has just configured address translation and is verifying the configuration. What three things can the administrator verify?

• The total number of translations is 6.

• The inside interface is Serial0/2/1.

• Three addresses from the NAT pool are being used by hosts.

• The NAT pool has a netmask of 255.255.255.248.

• A standard access list numbered 1 was used as part of the configuration process.

NAT is configured on RT1 and RT2. The PC is sending a request to the web server. What IPv4 address is the source IP address in the packet between RT2 and the web server?

• 203.0.113.10

• 209.165.200.245

• 192.168.1.5

• 172.16.1.10

• 172.16.1.254

Based on the output that is shown, identify the type of NAT that has been implemented.

• Static NAT

• Dynamic NAT

• PAT (Port Address Translation)

• Overloading NAT

The output shows that there are two inside global addresses that are the same but that have different port numbers. The only time port numbers are displayed is when PAT is being used. The same output would be indicative of PAT that uses an address pool. PAT with an address pool is appropriate when more than 4,000 simultaneous translations are needed by the company.

• dynamic NAT with a pool of two public IP addresses

• PAT using an external interface

• static NAT with a NAT pool

• static NAT with one entry