A. The forwarding table contains all known routes.
B. The forwarding table stores a subset of information from the routing table.
C. Junos devices use the forwarding table to compare incoming packets against existing entries to determine the next hop.
D. If multiple matches exist, the forwarding table uses the least-specific entry to forward packets toward the destination.
第1题:
A.security
B.functional
C.junos-global
D.management
第2题:
A.Forwarding状态的端口可以收发BPDU报文
B.Forwarding状态的端口可以根据收到的数据报文学习源MAC
C.Forwarding状态的端口只转发报文,不学习MAC地址
D.Forwarding状态的端口可以转发数据报文
第3题:
第4题:
A. self
B. trust
C. untrust
D. junos-global
第5题:
( 11 )请在下列程序的空白处,填上适当的内容:
Import java. awt. *;
Import java. util. *;
Class BufferTest{
Public static void main(string args[])
Throws IOException{
FileOutputStream unbuf=
new FileOutputStream( “ test.one ” ) ;
BufferedOutputStream buf=
new 【 11 】 (new FileOutputStream( “ test.two ” ));
System.out.println
( “ write file unbuffered: ” + time(unbuf) + “ ms ” );
System.out.println
( “ write file buffered: ” + time(buf) + “ ms ” );
}
Static int time (OutputStream os)
Throws IOException{
Date then = new Date();
for (int i=0; i<50000; i++){
os.write(1);
}
}
os.close();
return(int)(()new Date()).getTime() - then.getTime());
}
第6题:
2、以下关于生成树协议中Forwarding状态描述错误的是()
A.Forwarding状态的端口可以接收BPDU报文
B.Forwarding状态的端口不学习报文源MAC地址
C.Forwarding状态的端口可以转发数据报文
D.Forwarding状态的端口可以发送BPDU报文