CCNA 2 v7- 151 to 173

157. What protocol or technology is a Cisco proprietary protocol that is automatically enabled on 2960 switches?

DTP

161. Which Cisco solution helps prevent ARP spoofing and ARP poisoning attacks?

Dynamic ARP Inspection

154. What is the effect of entering the ip dhcp snooping limit rate 6 configuration command on a switch?

It restricts the number of discovery messages, per second, to be received on the interface.

162. What is an advantage of PVST+?

PVST+ optimizes performance on the network through load sharing

166. A small publishing company has a network design such that when a broadcast is sent on the LAN, 200 devices receive the transmitted broadcast. How can the network administrator reduce the number of devices that receive broadcast traffic?

Segment the LAN into smaller LANs and route between them.*

160. Which term describes the role of a Cisco switch in the 802.1X port-based access control?

authenticator

170. Which mitigation technique would prevent rogue servers from providing false IPv6 configuration parameters to clients?

enabling DHCPv6 Guard

153. What IPv6 prefix is designed for link-local communication?

fe80::/10

168. What else is required when configuring an IPv6 static route using a next-hop link-local address?

interface number and type

159. What are two characteristics of Cisco Express Forwarding (CEF)? (Choose two.)

-This is the fastest forwarding mechanism on Cisco routers and multilayer switches. -Packets are forwarded based on information in the FIB and an adjacency table.

172. While attending a conference, participants are using laptops for network connectivity. When a guest speaker attempts to connect to the network, the laptop fails to display any available wireless networks. The access point must be operating in which mode?

-active

173. Which three components are combined to form a bridge ID?

-extended system ID -bridge priority -MAC address

169. A technician is configuring a wireless network for a small business using a SOHO wireless router. Which two authentication methods are used, if the router is configured with WPA2? (Choose two.)

-personal -enterprise

171. A PC has sent an RS message to an IPv6 router attached to the same network. Which two pieces of information will the router send to the client? (Choose two.)

-prefix length -prefix

158. What address and prefix length is used when configuring an IPv6 default static route?

::/0

167. What defines a host route on a Cisco router?

An IPv4 static host route configuration uses a destination IP address of a specific device and a /32 subnet mask.

163. What protocol or technology uses a standby router to assume packet-forwarding responsibility if the active router fails?

HSRP

156. What is the effect of entering the ip arp inspection validate src-mac configuration command on a switch?

It checks the source L2 address in the Ethernet header against the sender L2 address in the ARP body

164. What is the effect of entering the show ip dhcp snooping binding configuration command on a switch?

It displays the IP-to-MAC address associations for switch interfaces.

165. What action takes place when the source MAC address of a frame entering a switch is in the MAC address table?

The switch updates the refresh timer for the entry.

152. Users on a LAN are unable to get to a company web server but are able to get elsewhere. What should be done or checked?

Verify that the static route to the server is present in the routing table

151. A network administrator is configuring a WLAN. Why would the administrator apply WPA2 with AES to the WLAN?

to provide privacy and integrity to wireless traffic by using encryption

155. A network administrator is configuring a WLAN. Why would the administrator change the default DHCP IPv4 addresses on an AP?

to reduce outsiders intercepting data or accessing the wireless network by using a well-known address range