Chapter Questions
Why is SNA classified as an architecture?
What is the function of VTAM in an SNA network?
What is the function of the NCP in an SNA network?
Discuss the relationship between VTAM and the NCP in an SNA network with respect to their functions and location where they reside.
What are the three network addressable units in an SNA network? What is the function of each unit?
What is the relationship between peripheral nodes and subarea nodes in an SNA network?
Why is it difficult to interconnect separate SNA organizational networks?
What are two advantages obtained from the use of LU6.2 over LU2?
Describe the four types of SNA sessions.
What is an SNA subarea?
What is the function of Advanced Program to Program Communications (APPC)?
What is the relationship of APPN to APPC?
What are the three types of nodes in an APPN network?
Discuss the major functions of an APPN Network Node.
Describe the two variables that control APPN routing.
What is an RFC?
What is one of the key reasons for the dramatic growth in the use of the TCP/ IP protocol suite?
What is the difference between FTP and Telnet with respect to the connections they require?
When using Microsoft Windows describe the general function performed by entering the following command:ftp ftp www.irs.com
Discuss the flexibility associated with the use of the Microsoft Telnet application.
Describe the two key functions performed by the TCP/IP Domain Name Service (DNS).
What are the three major components of SNMP?
What is a Uniform Resource Locator (URL)?
What does the URL of http://www.irs.gov/refund.htm signify?
What is the difference between a datagram and a virtual circuit?
When UDP is used, where does the responsibility reside for ensuring that messages are properly delivered?
What are the two portions of an IP address?
Assume a dotted-decimal network $\operatorname{IP}$ address of 205.131.175.14. What is the class of the IP address?
Why would you want to subnet an IP address?
What is the function of a subnet mask?
When an application protocol uses TCP, where is the IP header placed with respect to the TCP header?
What is the function of a name server?
Discuss three key differences between SNA and TCP/IP.
What is the primary advantage obtained by the use of a communications controller TIC as opposed to the use of a 3174 Token-Ring Adapter for providing workstations access to an IBM mainframe?
Describe the problem associated with encapsulating SNA traffic within TCP/IP.
How does priority pass-thru operate?
Where would you use a TN3270 application?