is an error detection code that most data communication networks use。A．Cyclic Redundancy CodeB．Manchester CodeC．Huffman CodeD．4B/5B Code
is an error detection code that most data communication networks use。
A．Cyclic Redundancy Code
B．Manchester Code
C．Huffman Code
D．4B/5B Code
相关考题：
Whenyoumakeanymistakesinnurses’notes,youshouldNOT.() A.drawalinethroughthemistakesB.write‘error’overthemistakesC.writeyoursignaturedownneartothemistakesD.use‘white-out’
下列程序的运行结果是public class test{private String[] data={“10”,“10.5”};public void fun(){double s=0;for(int i=0;i3;i++){try{s=s+Integer .parseInt(data[i])；}catch(Exception e){System.out.print(“errorl:”+data[i])；}}}public static void main(String[]args){try{testd=new test()；d .fun()；}catch(Exception e){System.out.printIn(“error2”)；}}}A．errorl:10.5B．error2C．errorl:10.5 error2D．以上都不对
从供选择的答案中选出应填入英语文句中()的正确的答案。Applications put computers to practical business (A), but below the (B) it's the heart of an operating system the kernel that provides the technical wizardry to juggle multiple program, connect to networks and store (C) .A traditional kernel provides all the functions for applications. The kernel (D) memory, I/O devices and parcels out processor time.The kernel also supports security and fault (E), which is the ability to recover automatically when parts of the system fail.A: ① used ② use ③ apply ④ appliedB: ① earth ② bottom ③ table ④ surfaceC: ① graphics ② data ③ text ④ imageD: ① manages ② manage ③ managed ④ managingE: ① error ② question ③ tolerance ④ problem
You perform a security audit of a server named DC1. You install the Microsoft Network Monitor 3.0 application on DC1.You plan to capture all the LDAP traffic that comes to and goes from the server between 20:00 and 07:00 the next day and save it to the E:\data.cap file. You create a scheduled task. You add a new Start a program action to the task.You need to add the application name and the application arguments to the new action.What should you do?（）A. Add nmcap.exe as the application name. Add the /networks * /capture LDAP /file e:\data.cap /stopwhen /timeafter 11hours line as arguments.B. Add netmon.exe as the application name. Add the /networks */capture LDAP /file e:\data.cap /stopwhen /timeafter 11hours line as arguments.C. Add nmcap.exe as the application name. Add the /networks * /capture !LDAP /file e:\data.cap /stopwhen /timeafter 11hours line as arguments.D. Add nmconfig.exe as the application name. Add the /networks * /capture LDAP /file e:\data.cap /stopwhen /timeafter 11hours line as arguments.
A MySQL replication slave is set up as follows: User all InnoDB tablesReceives ROW-based binary logs Has the read-only optionThe replication slave has been found in an error state.You check the MySQL error log file and find the following entries:2013-08-27 13:55:44 9056 [ERROR] Slave SQL: Could not execute Write_rows event on table test.tl; Duplicate entry ‘3’ for key’PRIMARY’ , Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event’s master log 56_master-bin.000003, end_log_pas 653, Error_code: 10622013-08-27 13:55:44 9056 [Warning] Salve: Duplicate entry ‘3’ for key ‘PRIMARY’Error_code: 10622013-08-27 13:55:44 9056 [ERROR] Error running query, slave SQL thread aborted. Fix theproblem, and restart the slave SQL thread with SLAVE START”, We stopped at log ‘56_masterbin.000003’ position 496 What are two possible causes for this error to occur?（）A.The slave was created with mysqldump –u root –p – skip-lock-table—all-databases /data/data.sqlB.The slave user does have INSERT, UPDATE, or DELETE permission and cannot execute the write_rows functionC.For tables with UNIQUE keys, statement-based replication must be used maintain integrityD.The root user on the slave has executed FLUSH LOGS, causing the relay-log to doublewriteE.The applications have the SUPER privilege, which allows them to update rows
ROW-based replication has stopped working. You investigate the error log file and find the following entries: 2013-08-27 14:15:47 9056 [ERROR] Slave SQL: Could not execute Delete_rows event on table test.t1;Can‘t find record in ‘t1‘, Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event‘s master log 56_master-bin. 000003, end_log_pos 851, Error_code: 10322013-08-27 14:15:47 9056 [warning] Slave: Can‘t find record in ‘t1‘ Error_code: 10322013-08-27 14:15:47 9056 [ERROR] Error running query, slave SQL thread aborted. Fix the problem, and restart the slave SQL thread with SLAVE START.We stopped at log ‘56_masterbin. 000003‘ position 684 Why did you receive this error?（）A.The slave SQL thread does not have DELETE privileges to execute on test.t1 table.sB.The table definition on the slave -litters from the masterC.Multi-threaded replication slaves can have temporary errors occurring for cross database updatesD.The slave SQL thread attempted to remove a row from the test.t1 table, but the row did not exist
Whichbuilt－inwouldyouusetotestwhethertheCREATETABLEcommandissuedintheSALESformexecutedsuccessfully?() A.FORMS_DDLB.DO_SQLC.FORM_SUCCESSD.FORM_NOT_SUCCESSE.DBMS.ERROR_CODE
下列程序的运行结果是（ ）。 public class test{ private String[]data={¨10"，"10．5")； public void fun{ double s=0： for(int i=0；i3；j++){ try{ s=s+Integer．parseInt(data[i])； catch(Exception e){ System．out．print("errorl："+data[i])； } } } public static void main(string[]args){ try{ test d=new test： fun： }catch(Exception e){ System．OUt．println("error2") } } }A.errorl：10．5B.error2C.errorl：10．5 error2D.以上都不对
下列程序的运行结果是（ ）。 public class test{ private String[]data={¨10"，"10．5"}， public void fun( double S=0； for(int i=0；i3；i++){ try{ s=s+Integer．parseInt(data[i])； catch(Exception e){ System．out．print(“errorl：”+data[i])。 } } } public static void main(string[]args){ try{ test d=new test； fun； }catch(Exception e){ System．out．println("error2") } } }A.errorl：10．5B.error2C.errorl：10．5 error2D.以上都不对
指示具有只读属性的代码区的语句是（）A．AREA Mycode1,CODE,READONLYB．AREA Mycode2,DATA,READONLYC．AREA Mycode3,CODE,READWRITED．AREA Mycode4,DATA,READWRITE