1. Exam 1 Review Slides INFS 4900/5900 Section 2 (Tuesday/Thursday) Fall 2015

2. General Exam Information  Chapters 1 – 5 and subnetting!!  50 multiple guess questions (100 points total)  4 short answer questions (50 points total)  Section 2 (Tuesday / Thursday)  October 1, 2015  BAS S137E  2:40 – 4:05 p.m.

3. Chapter 1  What are the 5 layers of the Internet model presented in the textbook?  What happens at each layer?  What are examples of protocols or standards used at layers 2-5?  What are the layers of the OSI model?  What is the difference between the OSI model and the Internet model?

4. Chapter 2  What is an application architecture?  What are the four functions of an application architecture?  What are host-based, client-based, and client-server (2- tier, 3-tier, & n-tier) architectures?  How are application functions distributed across the client and server in each of these architectures?  What are thick and thin clients?

5. Chapter 2  What are the optional and required parts of HTTP request and response packets?  What do the status codes 200 & 404 mean related to HTTP?  What is a peer-to-peer architecture?

6. Chapter 3  What are two different options for organizing a circuit?  What are the three options for data flow on a circuit?  What are the primary types of wired media (twisted pair and fiber) used in networks?  What are the general characteristics of each?  What are examples of wireless media (radio, microwave, satellite)?  What are the general characteristics of each?  What is propagation delay?

7. Chapter 3  What is attenuation?  What type of wired media has the lowest error rates and fastest transmission speeds?  If given a number of bits, be able to determine how many unique items can be represented.  What are the differences between digital and analog signaling?  What are the characteristics of a sound wave?  How is each measured?

8. Chapter 3  What is modulation?  What is a modem?  What is a codec?  What are unipolar, bipolar return-to-zero, and bipolar non-return-to-zero signaling? Be able to draw these.  Which experiences the fewest errors?  What is multiplexing?  What are TDM, FDM, and WDM?

9. Chapter 4  What are the two primary methods for media access control?  What is the media access control method for Ethernet?  What is the layout for asynchronous transmission?  What is parity?  What is the probability of detecting an error with parity?  What is CRC?

10. Chapter 4  What is the primary way we correct for error?  What is ARQ?  What are stop-and-wait and continuous ARQ?  How are ACKs and NAKs used when sending packets?

11. Chapter 5  What are the primary protocols used at the transport and network layers?  What are the functions of the transport and network layers?  What are the header sizes of TCP and IP?  What are the four items that are needed by any computer connecting to a TCP/IP network?  What are the five classes of IPv4 addresses?  What is the size of an IPv4 address?  How large is this address space?

12. Chapter 5  What is the size of an IPv6 address?  What is the size of a port used at the transport layer?  How are ports used?  Is TCP connection-oriented or connection-less?  What about UDP?  What is a three-way handshake?  What is server name resolution?  How is it handled on networks today?  What is the hierarchical structure of DNS?

13. Chapter 5  What is ARP?  What are loopback and APIPA addresses in IPv4?  What is a broadcast message?  What is a multicast message?  What are the three fundamental approaches to routing?  What is a routing table?  What is a subnet?  What is a subnet mask?

14. Chapter 5  What are the default subnet masks for IPv4 classes A, B, and C?  How do you take a class C address and create subnets?  Be able to…  Determine how many bits will need to be used to create a certain number of networks  Provide the host addresses that can be used in each subnet  Provide the broadcast address for each subnet  Determine the new subnet mask after subnetting the address space  Understand CIDR notation