1. Stored on a flash memory device is a 200 megabyte (MB) message to be transmitted by an e-mail from one server to another, passing three nodes of a connectionless network. This network forces packets to be of size 10KB, excluding a packet header of 40 bytes. Nodes are 400 miles apart, and servers are 50 miles away from their corresponding nodes. All transmission links are of type 100Mb/s. The processing time at each node is 0.2 seconds.

Find the propagation delays per packet between a server and a node and between nodes.

Find the total time required to send this message.

2. Select the correct answer(s)

A Class B network needs to be subnetted such that it supports 100 subnets and 100 hosts/subnet. Which of the following answers list a workable combination for the number of network, subnet, and host bits? (Select two answers.)

Network = 16, subnet = 7, host = 7

Network = 16, subnet = 8, host = 8

Network = 16, subnet = 9, host = 7

Network = 8, subnet = 7, host = 17

Which of the following are private IP networks? (Select two answers.)

172.31.0.0

172.32.0.0

192.168.255.0

192.1.168.0

11.0.0.0

Before Class B network 172.16.0.0 is subnetted by a network engineer, what parts of the structure of the IP addresses in this network already exist, with a specific size? (Select two answers.)

Network

Subnet

Host

Broadcast

Which of the following is true about IP address 172.16.99.45's IP network? (Select two answers.)

The network ID is 172.0.0.0.

The network is a Class B network.

The default mask for the network is 255.255.255.0.

The number of host bits in the unsubnetted network is 16.

Working at the help desk, you receive a call and learn a user's PC IP address and mask

(10.55.66.77, mask 255.255.255.0). When thinking about this using classful logic, you determine the number of network (N), subnet (S), and host (H) bits. Which of the following are true in this case?

N=12

S=12

H=8

S=8

N=24