Cisco CCNA Practice Test 3

Question 1

Which IPv6 address type is equivalent to the IPv4 private address space?

Accepted Answer

Unique local

Answer

Unique local addresses (FC00::/7) are the IPv6 equivalent of IPv4 private addresses, not routed on the public internet.

Question 2

What does the 'no shutdown' command do on a router interface?

Accepted Answer

Enables the interface that was administratively disabled

Answer

The 'no shutdown' command brings up an interface that was placed in an administratively down state.

Question 3

Which EtherChannel protocol is an open standard negotiation protocol?

Accepted Answer

LACP

Answer

LACP (Link Aggregation Control Protocol) is defined in IEEE 802.3ad and is an open standard for EtherChannel negotiation.

Question 4

A router receives a packet destined for 192.168.10.50. It has routes for 192.168.10.0/24 and 0.0.0.0/0. Which route does it use?

Accepted Answer

192.168.10.0/24 because it is the most specific match

Answer

Routers use the longest prefix match, so the more specific /24 route is preferred over the default route /0.

Question 5

Which layer of the OSI model does a switch primarily operate at?

Accepted Answer

Layer 2

Answer

Switches operate at Layer 2 (Data Link) and use MAC addresses to forward frames within a network.