Chapter 5 Practice Problems (Practice – no credit) Due: 11:59pm on Friday, March 14, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy Tactics Box 5.1 Drawing Force Vectors Learning Goal: To practice Tactics Box 5.1 Drawing Force Vectors. To visualize how forces are exerted on objects, we can use simple diagrams such as vectors. This Tactics Box illustrates the process of drawing a force vector by using the particle model, in which objects are treated as points. TACTICS BOX 5.1 Drawing force vectors Represent the object 1. as a particle. 2. Place the tail of the force vector on the particle. 3. Draw the force vector as an arrow pointing in the proper direction and with a length proportional to the size of the force. 4. Give the vector an appropriate label. The resulting diagram for a force exerted on an object is shown in the drawing. Note that the object is represented as a black dot. Part A A book lies on a table. A pushing force parallel to the table top and directed to the right is exerted on the book. Follow the steps above to draw the force vector . Use the black dot as the particle representing the book. F  F push F push

## Chapter 5 Practice Problems (Practice – no credit) Due: 11:59pm on Friday, March 14, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy Tactics Box 5.1 Drawing Force Vectors Learning Goal: To practice Tactics Box 5.1 Drawing Force Vectors. To visualize how forces are exerted on objects, we can use simple diagrams such as vectors. This Tactics Box illustrates the process of drawing a force vector by using the particle model, in which objects are treated as points. TACTICS BOX 5.1 Drawing force vectors Represent the object 1. as a particle. 2. Place the tail of the force vector on the particle. 3. Draw the force vector as an arrow pointing in the proper direction and with a length proportional to the size of the force. 4. Give the vector an appropriate label. The resulting diagram for a force exerted on an object is shown in the drawing. Note that the object is represented as a black dot. Part A A book lies on a table. A pushing force parallel to the table top and directed to the right is exerted on the book. Follow the steps above to draw the force vector . Use the black dot as the particle representing the book. F  F push F push

Part I. (20%) Multiple Choice Questions (only one answer) 1. What is the SS7 A-link? a. Signaling Link between SSP and STP b. Signaling Link between STP and STP c. Signaling Link between SCP and SCP d. Signaling Link between SSP and SSP 2. How is a TDM trunk identified on the SS7 network? It is identified by _____. a. IP Address b. ISDN B channel c. UDP port number d. Circuit Identificaiton Code (CIC) 3. What is the layer-3 protocol for ISUP? a. IP b. Q.931 c. MTP3 d. TCAP 4. Which of the following signaling is required to support Local Number Portability (LNP)? a. SIP b. Q.931 c. SS7 d. MGCP 5. Which of the following signlaing is NOT supported on the local telephone switch? a. ISDN/Q.931 b. SIP c. SS7 d. Station Signaling 6. Which of the following protocol is used by Advanced Intelligent Network (AIN) for remote database query? One of the AIN features is 1-800/1-900 calls. a. TCAP b. ISUP c. MGCP d. SIP 7. Which of the following is an NNI signaling? a. ISDN/Q.931 b. SIP c. MGCP d. SS7 8. Which of the following message is used by Access Media Gateway (MG) to inform Media Gateway Controller (MGC) that a phone is off-hook? a. NTFY b. RQNT c. CRCX d. MDCX 9. Which of the following device supports codec (such as G.711)? a. Media Gateway Contoller b. Media Gateway (Access Gateway) c. Analog Phone d. Signaling Transfer Point (STP) 10. In MGCP, a connection is _______________ ? a. The same as a TCP connection b. The same as a phone call. c. An end-point and its associated RTP session. d. A TDM channel identified by CIC Part II Questions (10%). 1. Provide two reasons for separating Media Gateway Controller (MGC) and Media Gateway. Media gateways are often controlled by a separate Media Gateway Controller which provides the call control and signaling functionality. 2. Identify the signaling between the network devices. (enter N/A if not applicable) 1 Media Gateway Controller Media Gateway Controller 2 Media Gateway Controller Media Gateway 3 Media Gateway Controller Class-5 (local) Switch 4 Media Gateway Controller SIP Proxy 5 Media Gateway Media Gateway Part III (20%) Call Flow Diagram and protocol stacks Media Gateway Controller (MGC) also has the function of SS7 Signaling Gateway. 1. Show the call flow diagram from Phone-22 (SIP) to Phone-33 (SIP). 2. Show the call flow diagram from Phone-41 (analog) to Phone-42(analog) over the VoIP Carrier Network. Note: each signaling message is an arrow with its own label. Do not use one arrow and one label to represent multiple messages.

## Part I. (20%) Multiple Choice Questions (only one answer) 1. What is the SS7 A-link? a. Signaling Link between SSP and STP b. Signaling Link between STP and STP c. Signaling Link between SCP and SCP d. Signaling Link between SSP and SSP 2. How is a TDM trunk identified on the SS7 network? It is identified by _____. a. IP Address b. ISDN B channel c. UDP port number d. Circuit Identificaiton Code (CIC) 3. What is the layer-3 protocol for ISUP? a. IP b. Q.931 c. MTP3 d. TCAP 4. Which of the following signaling is required to support Local Number Portability (LNP)? a. SIP b. Q.931 c. SS7 d. MGCP 5. Which of the following signlaing is NOT supported on the local telephone switch? a. ISDN/Q.931 b. SIP c. SS7 d. Station Signaling 6. Which of the following protocol is used by Advanced Intelligent Network (AIN) for remote database query? One of the AIN features is 1-800/1-900 calls. a. TCAP b. ISUP c. MGCP d. SIP 7. Which of the following is an NNI signaling? a. ISDN/Q.931 b. SIP c. MGCP d. SS7 8. Which of the following message is used by Access Media Gateway (MG) to inform Media Gateway Controller (MGC) that a phone is off-hook? a. NTFY b. RQNT c. CRCX d. MDCX 9. Which of the following device supports codec (such as G.711)? a. Media Gateway Contoller b. Media Gateway (Access Gateway) c. Analog Phone d. Signaling Transfer Point (STP) 10. In MGCP, a connection is _______________ ? a. The same as a TCP connection b. The same as a phone call. c. An end-point and its associated RTP session. d. A TDM channel identified by CIC Part II Questions (10%). 1. Provide two reasons for separating Media Gateway Controller (MGC) and Media Gateway. Media gateways are often controlled by a separate Media Gateway Controller which provides the call control and signaling functionality. 2. Identify the signaling between the network devices. (enter N/A if not applicable) 1 Media Gateway Controller Media Gateway Controller 2 Media Gateway Controller Media Gateway 3 Media Gateway Controller Class-5 (local) Switch 4 Media Gateway Controller SIP Proxy 5 Media Gateway Media Gateway Part III (20%) Call Flow Diagram and protocol stacks Media Gateway Controller (MGC) also has the function of SS7 Signaling Gateway. 1. Show the call flow diagram from Phone-22 (SIP) to Phone-33 (SIP). 2. Show the call flow diagram from Phone-41 (analog) to Phone-42(analog) over the VoIP Carrier Network. Note: each signaling message is an arrow with its own label. Do not use one arrow and one label to represent multiple messages.

Part I. Multiple choice (20 points)   … Read More...