程序流程图中带有箭头的线段表示的是A．图元关系B．数据流C．控制流D．调用关系

A．1+0

B．1+1

C．1：1

D．1：N

Click the Exhibit button. Given the following parameters: transmitter output (min): -2 dBm receiver input (min): -28 dBm 15216 Mux and Demux loss: 4.5 dB 16 channels maximum In which sites shown in the exhibit could the 15216 EDFAs be placed to minimize the number of EDFAs needed？（）

A. Locations B, C only

B. Locations A, B, C only

C. Locations A, B, D only

D. Locations B, C, D only

E. Locations A, B, C, D

A.Compilation will succeed for all classes and interfaces.

B.Compilation of class C will fail because of an error in line 2.

C.Compilation of class C will fail because of an error in line 6.

D.Compilation of class AImpl will fail because of an error in line 2

ar.blatz.Book com.bar.Car com.bar.blatz.Sun Which graph represents the correct directory structure for a JAR file from which those classes can be used by the compiler and JVM？ （）

A.Jar A

B.Jar B

C.Jar C

D.Jar D

E.Jar E

A. Thin Film filter

B. Fiber Bragg Grating

C. Arrayed Wave Guide

D. Erbium fiber amplifier

A.Compilation fails.

B.ClassC is displayed.

C.The code runs with no output.

D.An exception is thrown at runtime.

A．300-100-100-100-100

B．300-300-100-100-100

C．300-300-300-100-100

D．300-300-300-300-100

A.The application will crash.

B.The code on line 29 will be executed.

C.The code on line 5 of class A will execute.

D.The code on line 5 of class B will execute.

E.The exception will be propagated back to line 27.

A. revertive

B. circuit type

C. circuit size

D. bidirectional

E. protected drops

F. switch on PDI-P

circuits, how many STS ports are used on the VT1.5 matrix at Node 1 as VT circuits and how many are used after using VT tunnels？（）

A.2；0

B.3；2

C.3；5

D.4；0

E.6；0

F.6；2