CPSC 42500 Homework 6

The middle component of triple DES is decryption, not encryption.

Aside from security, what are other advantages of NAT?

What is the difference between a Routing and a Paging cache?

Explain Unicast MAC Address, Broadcast MAC Address, and Multicast MAC Address.

A widget manufacturer has installed new network servers, changing its network from P2P, to client/server-based networks. The network consists of 200 users who make an average of $20 an hour, working on 100 workstations. Previously, none of the workstations involved in the network had anti-virus software installed on the machines. This was because there was no connection to the Internet and the workstations did not have USB/disk drives or Internet connectivity, so the risk of viruses was deemed minimal. One of the new servers provides a broadband connection to the Internet, which employees can now use to send and receive email and surf the Internet. One of the managers read in a trade magazine that other widget companies have reported an annual 75% chance of virus infection after installing T1 lines, and it may take up to 3 hours to restore the system. A vendor will sell licensed copies of antivirus for all servers and the 100 workstations at a cost of $8,700 per year. The company has…

What are error-detection protocols?

a) Based on Figure 2-1, answer the followings: yain Server Refeption Switch R Bridge ID: Priority- 28673 Mac Address - 00:23:59:A7:41:10 Fa0/11 Fa0/12 Swch R Fa0/12 Switch S Fa0/21 Switch S Bridge ID: Priority= 32769 Mac Address - 00:23:59:A7:41:18 Fa0/11, Fa0/22 Switch T Bridge ID: Priority= 32769 Mac Address 00:23:59:A7:41:1A Switch T Figure 2-1 A multi-switched network that implements STP The Spanning Tree Protocol (STP) is a network protocol that builds a loop-free logical topology for an Ethernet network. Based on Figure 2-1, illustrate and explain the 4-step STP convergence that would happen as below: (i) Root Bridge Election. (ii) Determine Root Port(s) on ALL non-root bridges. (iii) Determine Designated Port(s) (Only consider segments between non-root bridges). (iv) Determine Blocked Port.

In the OSI Model, what does it mean to communicate from one peer to another?