Test 8 - CCNA 2

A user is configuring a wireless access point and wants to prevent any neighbors from discovering the network. What action does the user need to take?

• Configure DMZ settings.

• Configure a DNS server.

• Disable SSID broadcast.

• Enable WPA encryption.

Answer explanation

Explanation: Disabling SSID broadcast prevents the access point from announcing the name of the network. Enabling WPA encryption, configuring DMZ settings, and configuring a DNS server will accomplish different tasks, but the name of the network will still be announced.

When a wireless network in a small office is being set up, which type of IP addressing is typically used on the networked devices?

• network

• public

• wireless

• private

Answer explanation

Explanation: In setting up the wireless network in a small office, it is a best practice to use private IP addressing because of the flexibility and easy management it offers.

A user has just purchased a generic home router and would like to secure it. What should be done to help secure the wireless home router?

• Change the default SSID.

• Set a private IPv4 network for the internal network.

• Allow only IPv6 traffic to enter the router.

• Change the default administrator password.

Answer explanation

Explanation: The home router allows a designated administrator to manage the network. Anyone who knows the account username and password can log into the router itself, which grants complete access to the features of the device and information about any devices that are connected. Most router manufacturers configure their new routers with the same default username and password and thus changing the default administrator password is a step towards securing the home router.

Which protocol could be used by a company to monitor devices such as a wireless LAN controller (WLC)?

Why would a technician configure a passphrase for a WLAN on a wireless router?

• to protect someone from changing the configuration

• to protect the SSID from being changed

• to protect someone from cabling directly to the router and accessing the router

• to configure wireless client authentication

Answer explanation

Explanation: When a WLAN on a wireless router is being configured, a passphrase is used in the wireless security settings for a specific security mode. Clients must be configured for the same security mode and the same passphrase in order to access the WLAN.

What functionality is required on routers to provide remote workers with VoIP and videoconferencing capabilities?

Answer explanation

Explanation: Quality of service (QoS) needs to be enabled on routers to provide support for VoIP and videoconferencing. QoS refers to the capability of a network to provide better service to selected network traffic, as required by voice and video applications.

Which service on a wireless router enables a host with an internal private IPv4 address to access an outside network using a public IPv4 address?

Which feature on a Cisco router permits the forwarding of traffic for which there is no specific route?

• next-hop

• gateway of last resort

• outgoing interface

• route source

Answer explanation

Explanation: A default static route is used as a gateway of last resort to forward unknown destination traffic to a next hop/exit interface. The next-hop or exit interface is the destination to send traffic to on a network after the traffic is matched in a router. The route source is the location a route was learned from.

What are two functions of dynamic routing protocols? (Choose two.)

• to discover the network

• to avoid exposing network information

• to assure low router overhead

• to choose the path that is specified by the administrator

• to maintain routing tables

Answer explanation

Explanation: Dynamic routing protocols exist to discover the network, maintain routing tables, and calculate the best path. Having low levels of routing overhead, using the path specified by the administrator, and avoiding the exposure of network information are functions of static routing.

What is an advantage of using dynamic routing protocols instead of static routing?

• fewer router resource overhead requirements

• easier to implement

• more secure in controlling routing updates

• ability to actively search for new routes if the current path becomes unavailable

Answer explanation

Explanation: Dynamic routing has the ability to search and find a new best path if the current path is no longer available. The other options are actually the advantages of static routing.