Cisco Chapter 8 for final exam 2
three classful prefix-lengths
/8, /16, /24
two effects of excess broadcast traffic
1 - slow networks due to excess traffic, 2 - slow devices due to the need to process broadcasts
The last host address on the 10.15.25.0/24 network is ___________
10.15.25.254
Refer to the exhibit. Which two network addresses can be assigned to the network containing 10 hosts? Your answers should waste the fewest addresses, not reuse addresses that are already assigned, and stay within the 10.18.10.0/24 range of addresses. (Choose two.) 10.18.10.200/28 10.18.10.208/28 10.18.10.224/28 10.18.10.200/27 10.18.10.224/27 10.18.10.240/27
10.18.10.208/28 10.18.10.224/28
The network portion of the address 172.16.30.5/16 is _________
172.16
Three devices are on three different subnets. Match the network address and the broadcast address with each subnet where these devices are located. (Not all options are used.) Device 1: IP address 192.168.10.77/28 on subnet 1 Device 2: IP address192.168.10.17/30 on subnet 2 Device 3: IP address 192.168.10.35/29 on subnet 3 Subnet 1 network number Subnet 1 broadcast address Subnet 2 network number Subnet 2 broadcast address Subnet 3 network number Subnet 3 broadcast address
192.168.10.64 192.167.10.79 192.168.10.16 192.168.10.19 192.168.10.32 192.168.10.39
What is the subnet address for the IPv6 address 2001:D12:AA04:B5::1/64? 2001::/64 2001:D12::/64 2001:D12:AA04::/64 2001:D12:AA04:B5::/64
2001:D12:AA04:B5::/64
the subnet mask for prefix /26
255.255.255.192
A network engineer is subnetting the 10.0.240.0/20 network into smaller subnets. Each new subnet will contain between a minimum of 20 hosts and a maximum of 30 hosts. Which subnet mask will meet these requirements? 255.255.224.0 255.255.240.0 255.255.255.224 255.255.255.240
255.255.255.224
calculates the number of subnets created for n bits borrowed
2^n formula
calculates the number of hosts per subnet for n bits remaining in the host field
2^n-2 formula
A network administrator subnets the 192.168.10.0/24 network into subnets with /26 masks. How many equal-sized subnets are created? 1 2 4 8 16 64
4
structure of IPv6 unicast addresses
48-bit global routing prefix, 16-bit subnet ID, 64-bit interface ID
How many host addresses are available on the 192.168.10.128/26 network? 30 32 60 62 64
62
A network administrator has received the IPv6 prefix 2001:DB8::/48 for subnetting. Assuming the administrator does not subnet into the interface ID portion of the address space, how many subnets can the administrator create from the /48 prefix? 16 256 4096 65536
65536
allows subnets of different sizes to be created from the same network address
VLSM
gateway
a device that allows hosts on one network to communicate with hosts on other networks
subnet
a subdivision of a network that is created either to conserve addresses or to support specific network requirements.
VLSM
allows subnets of different sizes to be created from the same network address
broadcast domain
an area within which a broadcast transmission will be shared
What does the IP address 192.168.1.15/29 represent? subnetwork address multicast address unicast address broadcast address
broadcast address
an area within which a broadcast transmission will be shared
broadcast domain
2^n-2 formula
calculates the number of hosts per subnet for n bits remaining in the host field
2^n formula
calculates the number of subnets created for n bits borrowed
hree methods allow IPv6 and IPv4 to co-exist. Match each method with its description. (Not all options are used.) The IPv4 packets and IPv6 packets coexist in the same network. The IPv6 packet is transported inside an IPv4 packet. IPv6 packets are converted into IPv4 packets, and vice versa.
dual-stack tunneling translation
a device that allows hosts on one network to communicate with hosts on other networks
gateway
A college has five campuses. Each campus has IP phones installed. Each campus has an assigned IP address range. For example, one campus has IP addresses that start with 10.1.x.x. On another campus the address range is 10.2.x.x. The college has standardized that IP phones are assigned IP addresses that have the number 4X in the third octet. For example, at one campus the address ranges used with phones include 10.1.40.x, 10.1.41.x, 10.1.42.x, etc. Which two groupings were used to create this IP addressing scheme? (Choose two.) geographic location device type department personnel type support model
geographic location device type
three levels of IP addressing hierarchy
network, subnetwork, host
What are two benefits of subnetting networks? (Choose two.) combining multiple smaller networks into larger networks reducing the size of broadcast domains decreasing the number of broadcast domains grouping devices to improve management and security increasing the size of collision domains
reducing the size of broadcast domains grouping devices to improve management and security
48-bit global routing prefix, 16-bit subnet ID, 64-bit interface ID
structure of IPv6 unicast addresses
a subdivision of a network that is created either to conserve addresses or to support specific network requirements.
subnet
the process of subdividing a network into smaller groupings of devices, or subnets
subnetting
An administrator wants to create four subnetworks from the network address 192.168.1.0/24. What is the network address and subnet mask of the second useable subnet? subnetwork 192.168.1.64 subnet mask 255.255.255.192 subnetwork 192.168.1.32 subnet mask 255.255.255.240 subnetwork 192.168.1.64 subnet mask 255.255.255.240 subnetwork 192.168.1.128 subnet mask 255.255.255.192 subnetwork 192.168.1.8 subnet mask 255.255.255.224
subnetwork 192.168.1.64 subnet mask 255.255.255.192
subnetting
the process of subdividing a network into smaller groupings of devices, or subnets
255.255.255.192
the subnet mask for prefix /26
/8, /16, /24
three classful prefix-lengths
network, subnetwork, host
three levels of IP addressing hierarchy
1 - slow networks due to excess traffic, 2 - slow devices due to the need to process broadcasts
two effects of excess broadcast traffic
