Companycom has a system running AIX 5.2 and wants to upgrade to AIX 5.3. What method would provide the quickest recovery if the upgrade failed?()
A、Use alt_disk_install
B、Backup image to NIM server
C、Backup using mksysb to DVD-RAM
D、Apply the upgrade and do not commit
数值决定了IP包在网络上允许停留的最长时间,()在实际应用时一般都将它做成一个跳(Hop,或称驿站)计数器,每经过一个路由器其值减1。
public class X { public static void main (String[] args) { byte b = 127; byte c = 126; byte d = b + c; } } Which statement is true?()
A、 Compilation succeeds and d takes the value 253.
B、 Line 5 contains an error that prevents compilation.
C、 Line 5 throws an exception indicating “Out of range”
D、 Line 3 and 4 contain error that prevent compilation.
E、 The compilation succeeds and d takes the value of 1.
下列不属于软件设计阶段任务的是( )。
A、软件总体设计
B、算法设计
C、制定软件确定测试计划
D、数据库设计
在TCP/IP协议中TCP/UDP是传输层的协议,ICMP是网间网层的协议,TP、TELNET是应用层的协议。ARP、RARP是()层的协议。
下列哪个命令最方便用来查询MAC地址:()。
A、tracert-d
B、ping-t
C、netstat
D、ipconfig/all