At which stage are macro calls replaced with their expanded instruction sequences?

A control section is loaded at starting address 507A (hex). A symbol within that section has a relative offset of 0030 (hex) from the start of the section. What is the absolute memory address of that symbol?

During linking, a program called PROG2 is loaded starting at address 507A (hex). What value does the linking loader add to each relocatable address field in PROG2?

A control section is loaded at hexadecimal address 4000 and has a length of 00107A (hex). At what hexadecimal address does the next control section begin?

What is the hexadecimal representation of the decimal value 18?

In a SIC object program, a Text (T) record holds consecutive bytes of machine code. Which of the following causes the assembler to start a new Text record?

A SIC object program contains four record types: Header (H), Text (T), End (E), and Modification (M). Which record type does the linking loader use to perform relocation?

Under what condition will a macro processor enter an infinite expansion loop?

In a flow graph, a directed edge exists from basic block B1 to basic block B2 when:

Consider the following Three-Address Code (TAC) program:

How many leaders does this program have?