Networking Chapter 8 Subnets and VLANs

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? a. DHCP relay agent b. DHCP server c. Hypervisor d. Virtual router

DHCP relay agent

What is the network ID with CIDR notation for the IP address 172.16.32.108 whose subnet mask is 255.255.255.0?

172.16.32.108/24

How many bits of a Class A IP address are used for host information? a. 8 bits b. 16 bits c. 24 bits d. 32 bits

24 bits

Which formulas can be used to calculate the magic number? Choose two. a. 256 - the interesting octet b. 2^h - 2 c. 2^n d. 2^h

256 - the interesting octet 2^h

What is the formula for determining the number of possible hosts on a network? a. 2^n = Y b. 2^n - 2 = Y c. 2^h = Z d. 2^h - 2 = Z

2^h - 2 = Z

Subnetting operates at Layer __ __ __ __ __ while VLANs function at Layer __ __ __ __ __.

3 networking; 2 data link

Which IEEE standard determines how VLANs work on a network? a. 802.1x b. 802.11 c. 802.3af d. 802.1Q

802.1Q

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? a. None b. Eight c. Nine d. Ten

eight

Which Cisco command lists configured VLANs on a switch?

show vlan

Which port mode on a switch enables that port to manage traffic for multiple VLANs? a. Console b. Ethernet c. Access d. Trunk

trunk

Which IP addressing technique subnets a subnet to create subnets of various sizes?

variable length subnet mask

Which hexadecimal block in an IPv6 address is used for the Subnet ID? a. The first one b. The third one c. The fourth one d. The eighth one

The fourth one

Which of the following is not a good reason to segment a network? a. To limit access to broadcast domains b. To reduce the demand on bandwidth c. To increase the number of networking devices on a network d. To narrow down the location of problems on a network

To increase the number of networking devices on a network

What do well-chosen subnets accomplish? a. IP address spaces overlap for easier management. b. Network documentation is easier to manage. c. Routing efficiency is decreased by ensuring IP address spaces are not mathematically related. d. Problems affect the entire network, making them more difficult to pin down.

Network documentation is easier to manage.