A. load factory-default
B. load override factory-default
C. load replace default
D. load set default
第1题:
针对以下程序段,对于变量c的取值,至少需要(61)个测试用例才能够满足语句覆盖的要求。c=((u8_t*)q->payload)[i];switch(c){case SLIP_END: sio_send(SLIP_ESC,netif->state); sio_send(SLIP_ESC_END,netif->state); break;case SLIP_ESC: sio_send(SLIP_ESC,netif->state); sio_send(SLIP_ESC_ESC,netif->state); break;default: sio_send(c,netif->state); break; }
A.4
B.3
C.2
D.1
第2题:
下述程序中能够实现安全状态机设计的是:
A.Parameter s0=0,s1=1,s2=2,s3=3,s4=4,s5=5,s6=6,s7=7; ... s5: next_state =s0; S6: next_state =s0; S7: next_state =s0; default:begin next_state =s0;#B.`define s0=1,s1=2,s2=4,s3=4,s4=8 s5: next_state =s1; S6: next_state =s1; S7: next_state =s2; default:begin next_state =s0;#C.Parameter s0=40,s1=41,s2=42,s3=43,s4=44,s5=45,s6=46,s7=47; ... s5: next_state =s0; S6: next_state =s0; S7: next_state =s0;#D.以上都正确第3题:
定义状态机当前状态为state ,次态为next _state; 输入a,输出b, 则下列为Mealy状态机的写法是:
A.always@(posedge clk) case (state ) 0:next_state<=1; 1:next_state<=x;#B.always@(posedge clk) case (state ) 0: if(a==0)next_state<=1; else next_state<=x; 1:next_state<=x;#C.always@(posedge clk) case (state ) 0: if(state==0)next_state<=1; else next_state<=x; 1:next_state<=x;#D.以上都不对第4题:
A.Wait-to-Restore,ForcedSwitch,ManualSwitch,LockoutofProtection
B.ManualSwitch,Wait-to-Restore,LockoutofProtection,ForcedSwitch
C.LockoutofProtection,ForcedSwitch,ManualSwitch,Wait-to-Restore
D.LockoutofProtection,ManualSwitch,ForcedSwitch,Wait-to-Restore
E.Wait-to-Restore,ManualSwitch,ForcedSwitch,LockoutofProtection
F.Wait-to-Restore,ManualSwitch,LockoutofProtection,ForcedSwitch
第5题:
下面这段程序是否能够实现安全编码: Parameter s0=0,s1=1,s2=2,s3=3,s4=4,s5=5,s6=6,s7=7; ... s5: next_state =s0; S6: next_state =s0; S7: next_state =s0; default:begin next_state =s0;
第6题:
下述程序中能够实现安全状态机设计的是
A.Parameter s0=0,s1=1,s2=2,s3=3,s4=4,s5=5,s6=6,s7=7; ... s5: next_state =s0; S6: next_state =s0; S7: next_state =s0; default:begin next_state =s0;#B.define s0=1,s1=2,s2=4,s3=4,s4=8 s5: next_state =s1; S6: next_state =s1; S7: next_state =s2; default:begin next_state =s0;#C.Parameter s0=40,s1=41,s2=42,s3=43,s4=44,s5=45,s6=46,s7=47; ... s5: next_state =s0; S6: next_state =s0; S7: next_state =s0;#D.以上都是正确选型