ccna-3-v7-modules-6-8-wan-concepts

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 will impact negatively on switch performance.

• NAT causes routing tables to include more information.

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

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

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? (Choose two.)

• 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.​

• The internal hosts have to use a single public IPv4 address for external communication.

• The costs of readdressing hosts can be significant for a publicly addressed network.​

What is the purpose of the overload keyword in the ip nat inside source list 1 pool NAT_POOL overload command?

• It allows many inside hosts to share one or a few inside global addresses.

• It allows a list of internal hosts to communicate with a specific group of external hosts.

• It allows external hosts to initiate sessions with internal hosts.

• It allows a pool of inside global addresses to be used by internal hosts.

Which situation describes data transmissions over a WAN connection?

• A network administrator in the office remotely accesses a web server that is located in the data center at the edge of the campus.

• A manager sends an email to all employees in the department with offices that are located in several buildings.

• An employee prints a file through a networked printer that is located in another building.

• An employee shares a database file with a co-worker who is located in a branch office on the other side of the city.

Which two technologies are categorized as private WAN infrastructures? (Choose two.)

• Frame Relay

• VPN

• MetroE

• DSL

• cable

Which network scenario will require the use of a WAN?

• Employees need to connect to the corporate email server through a VPN while traveling.

• Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building.

• Employee workstations need to obtain dynamically assigned IP addresses.

• Employees in the branch office need to share files with the headquarters office that is located in a separate building on the same campus network.

What are two hashing algorithms used with IPsec AH to guarantee authenticity? (Choose two.)

• SHA

• RSA

• DH

• MD5

• AES

What two algorithms can be part of an IPsec policy to provide encryption and hashing to protect interesting traffic? (Choose two.)

• SHA

• RSA

• AES

• DH

• PSK