CCNA 3 v7 Modules 6 – 8: WAN Concepts Exam

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

1

Refer to the exhibit. From the perspective of R1, the NAT router, which address is the inside global address?

209.165.200.225

Refer to the exhibit. R1 is configured for static NAT. What IP address will Internet hosts use to reach PC1?

209.165.200.225

Refer to the exhibit. Which source address is being used by router R1 for packets being forwarded to the Internet?

209.165.200.225

Refer to the exhibit. 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?

209.165.200.245

Refer to the exhibit. Static NAT is being configured to allow PC 1 access to the web server on the internal network. What two addresses are needed in place of A and B to complete the static NAT configuration? (Choose two.)

A = 10.1.0.13 B = 209.165.201.1

Refer to the exhibit. A network administrator has just configured address translation and is verifying the configuration. What three things can the administrator verify? (Choose three.)

A standard access list numbered 1 was used as part of the configuration process. Address translation is working Two types of NAT are enabled.

What algorithm is used with IPsec to provide data confidentiality?

AES

Which situation describes data transmissions over a WAN connection?

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

What are two tasks to perform when configuring static NAT? (Choose two.)

Create a mapping between the inside local and outside local addresses. Identify the participating interfaces as inside or outside interfaces.

Which network scenario will require the use of a WAN?

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

What is a disadvantage when both sides of a communication use PAT?

End-to-end IPv4 traceability is lost.

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

Frame Relay MetroE

Which two WAN infrastructure services are examples of private connections? (Choose two.)

Frame Relay T1/E1

Which protocol creates a virtual point-to-point connection to tunnel unencrypted traffic between Cisco routers from a variety of protocols?

GRE

Which type of VPN allows multicast and broadcast traffic over a secure site-to-site VPN?

GRE over IPsec

Which type of VPN involves a nonsecure tunneling protocol being encapsulated by IPsec?

GRE over IPsec

Which type of VPN involves passenger, carrier, and transport protocols?

GRE over IPsec

Which type of VPN routes packets through virtual tunnel interfaces for encryption and forwarding?

IPsec virtual tunnel interface

Which type of VPN supports multiple sites by applying configurations to virtual interfaces instead of physical interfaces?

IPsec virtual tunnel interface

Which two end points can be on the other side of an ASA site-to-site VPN configured using ASDM? (Choose two.)

ISR router another ASA

Refer to the exhibit. What has to be done in order to complete the static NAT configuration on R1?

Interface S0/0/0 should be configured with the command ip nat outside.

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.

Which statement describes an important characteristic of a site-to-site VPN?

It must be statically set up.

Which is a requirement of a site-to-site VPN?

It requires a VPN gateway at each end of the tunnel to encrypt and decrypt traffic.

Which type of VPN has both Layer 2 and Layer 3 implementations?

MPLS VPN

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

NAT provides a solution to slow down the IPv4 address depletion. NAT introduces problems for some applications that require end-to-end connectivity.

Refer to the exhibit. A network administrator has configured R2 for PAT. Why is the configuration incorrect?

NAT-POOL2 is bound to the wrong ACL

How is "tunneling" accomplished in a VPN?

New headers from one or more VPN protocols encapsulate the original packets.

Refer to the exhibit. The NAT configuration applied to the router is as follows:

Not enough information is given to determine if both static and dynamic NAT are working.

Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?

PAT using an external interface

What type of address is 10.131.48.7?

Private

What type of address is 192.168.7.126?

Private.

What type of address is 128.107.240.239?

Public

What type of address is 198.133.219.148?

Public

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

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

SHA AES

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

SHA MD5

Which type of VPN connects using the Transport Layer Security (TLS) feature?

SSL VPN

Which type of VPN uses the public key infrastructure and digital certificates?​

SSL VPN

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.What problem is causing PC-A to be unable to communicate with the Internet?

The NAT interfaces are not correctly assigned.

Refer to the exhibit. Which two statements are correct based on the output as shown in the exhibit? (Choose two.)

The output is the result of the show ip nat translations command. The host with the address 209.165.200.235 will respond to requests by using a source address of 192.168.10.10.

Refer to the exhibit. A network administrator is viewing the output from the command show ip nat translations . Which statement correctly describes the NAT translation that is occurring on router RT2?​

The traffic from a source IPv4 address of 192.168.254.253 is being translated to 192.0.2.88 by means of static NAT.

Refer to the exhibit. A network administrator is viewing the output from the command show ip nat translations. Which statement correctly describes the NAT translation that is occurring on router RT2?​

The traffic from a source IPv4 address of 192.168.254.253 is being translated to 192.0.2.88 by means of static NAT.

What is a disadvantage of NAT?

There is no end-to-end addressing.

Which statement describes a VPN?

VPNs use virtual connections to create a private network through a public network.

Which two statements about the relationship between LANs and WANs are true? (Choose two.)

WANs are typically operated through multiple ISPs, but LANs are typically operated by single organizations or individuals. WANs connect LANs at slower speed bandwidth than LANs connect their internal end devices.​

What is the function of the Diffie-Hellman algorithm within the IPsec framework?

allows peers to exchange shared keys

Which VPN solution allows the use of a web browser to establish a secure, remote-access VPN tunnel to the ASA?

clientless SSL

Which two types of VPNs are examples of enterprise-managed remote access VPNs? (Choose two.)

clientless SSL VPN client-based IPsec VPN

What is the function of the Hashed Message Authentication Code (HMAC) algorithm in setting up an IPsec VPN?

guarantees message integrity

Refer to the exhibit. From the perspective of users behind the NAT router, what type of NAT address is 209.165.201.1?

inside global

Which IPsec security function provides assurance that the data received via a VPN has not been modified in transit?

integrity

A company is considering updating the campus WAN connection. Which two WAN options are examples of the private WAN architecture? (Choose two.)

leased line Ethernet WAN

In NAT terms, what address type refers to the globally routable IPv4 address of a destination host on the Internet?

outside global

What does NAT overloading use to track multiple internal hosts that use one inside global address?

port numbers

What type of address is 10.100.126.126?

private

What type of address is 10.100.34.34?

private

What type of address is 10.19.6.7?

private

What type of address is 64.100.190.189?

public

What type of address is 64.101.198.107

public

What type of address is 64.101.198.197?

public

Which two end points can be on the other side of an ASA site-to-site VPN? (Choose two.)

router another ASA

Which two technologies provide enterprise-managed VPN solutions? (Choose two.)

site-to-site VPN remote access VPN

Match the steps with the actions that are involved when an internal host with IP address 192.168.10.10 attempts to send a packet to and external server at the IP address 209.165.200.254 across a router R1 that running dynamic NAT. (Not all options are used.)

step 5 => R1 replaces the address 192.168.10.10 with a translated inside global address. step 2 => R1 checks the NAT configuration to determine if this packet should be translated. step 4 => R1 selects an available global address from the dynamic address pool. step 1 => The host sends packets that request a connection to the server at the address 209.165.200.254 step 3 => If there is no translation entry for this IP address, R1 determines that the source address 192.168.10.10 must be translated

What two addresses are specified in a static NAT configuration?

the inside local and the inside global

Which circumstance would result in an enterprise deciding to implement a corporate WAN?

when its employees become distributed across many branch locations