Network Administrator (WEEK 7)

How many bits of a Class A IP address are used for host information?

• 8 bits

• 16 bits

• 24 bits

• 32 bits

What is the formula for determining the number of possible hosts on a network?

• 2n 5 Y

• 2n 2 2 5 Y

• 2h 5 Z

• 2h 2 2 5 Z

Which of the following is not a good reason to segment a network?

• To limit access to broadcast domains

• To reduce the demand on bandwidth

• To increase the number of networking devices on a network

• To narrow down the location of problems on a network

What is the least number of bits you would need to borrow from the network portion of a Class B subnet mask to get at least 130 hosts per subnet?

• None

• Eight

• Nine

• Ten

What do well-chosen subnets accomplish?

• IP address spaces overlap for easier management.

• Network documentation is easier to manage.

• Routing efficiency is decreased by ensuring IP address spaces are not mathematically related.

• Problems affect the entire network, making them more difficult to pin down.

Which formulas can be used to calculate the magic number? Choose two.

• 256 – the interesting octet

• 2 h 2 2

• 2 n

• 2 h

Which hexadecimal block in an IPv6 address is used for the Subnet ID?

• The first one

• The third one

• The fourth one

• The eighth one

While designing your network’s VLAN topology, your team has decided to use a centrally managed DHCP server rather than creating a separate DHCP server for each VLAN. What software will you need in order to make the central DHCP server accessible across VLANs?

• DHCP relay agent

• DHCP server

• Hypervisor

• Virtual router

Which port mode on a switch enables that port to manage traffic for multiple VLANs?

• Console

• Ethernet

• Access

• Trunk

Which IEEE standard determines how VLANs work on a network?

• 802.1x

• 802.11

• 802.3af

• 802.1Q