2.6 CQ

Question 1

Which of these addresses needs to be configured to enable a computer access to the Internet or to other networks?

Image A. Subnet mask

Image B. Gateway address

Image C. DNS address

Image D. MAC address

Answer 1

B. The gateway address must be configured to enable a computer access to the Internet through the gateway device. By default, the subnet mask defines the IP address’s network and host portions. The DNS server takes care of name resolution. The MAC address is the address that is burned into the network adapter; it is configured at the manufacturer.

Question 2

Which technology assigns addresses on the 169.254.0.0 network number?

Image A. DHCP

Image B. Static IP

Image C. APIPA

Image D. Class B

Answer 2

C. If you see an address with 169.254 as the first two octets, then it is Automatic Private IP Addressing (APIPA). This is also the link-local range for IPv4. The Dynamic Host Configuration Protocol (DHCP) assigns IP addresses automatically to clients but by default does not use the 169.254 network number. Static IP addresses are configured manually by the user in the IP Properties window. Class B is a range of IP networks from 128 through 191

Question 3

You want to test the local loopback IPv6 address. Which address would you use?

A. 127.0.0.1

B. ::1

C. FE80::/10

D. ::0

Answer 3

B. You would use the ::1 address. That is the local loopback address for IPv6. 127.0.0.1 is the local loopback for IPv4. FE80::/10 is the range of unicast auto-configured addresses. ::0 is not valid but looks similar to how multiple zeros can be truncated with a double colon.

Question 4

You have been tasked with compartmentalizing the network. Which of the following technologies should you use?

A. APIPA

B. VPN

C. VLAN

D. IPv6

Answer 4

. You would create a virtual LAN (VLAN). Another valid option would be to implement IP subnetting. APIPA (also known as link-local) is an IP technology that auto-assigns addresses on the 169.254 network. A virtual private network (VPN) allows remote clients to connect to a network over the Internet using a secure tunnel. IPv6 in of itself does not compartmentalize the network. However, an IPv6 network that has been subnetted would be acceptable