traceroute
netstat -p
ping
netstat -rn
第1题:
A.entstat -v
B.netstat -i
C.entstat -aon
D.netstat -na
第2题:
A.tracert address
B.ping address
C.arp address
D.traceroute address
第3题:
TTL是什么?有什么用处,通常那些工具会用到它?(ping? traceroute? ifconfig? netstat?)
简:TTL是Time To Live,一般是hup count,每经过一个路由就会被减去一,如果它变成0,包会被丢掉。它的主要目的是防止包在有回路的网络上死转,浪费网络资源。ping和traceroute用到它。
详:TTL是Time To Live,目前是hup count,当包每经过一个路由器它就会被减去一,如果它变成0,路由器就会把包丢掉。IP网络往往带有环(loop),比如子网A和子网B有两个路由器相连,它就是一个loop。TTL的主要目的是防止包在有回路的网络上死转,因为包的TTL最终后变成0而使得此包从网上消失(此时往往路由器会送一个ICMP包回来,traceroute就是根据这个做的)。ping会送包出去,所以里面有它,但是ping不一定非要不可它。traceroute则是完全因为有它才能成的。ifconfig是用来配置网卡的,netstat -rn 是用来列路由表的,所以都用不着它
第4题:
A network admin wants to know every hop the packets take when he accesses cisco.com. Which command is the most appropriate to use?()
第5题:
A.show ip route
B.show route
C.traceroute
D.trace ip route
第6题:
A. to map all the devices on a network.
B. to display the current TCP/IP configuration values.
C. to see how a device MAC address is mapped to its IP address.
D. to see the path a packet will take when traveling to a specified destination.
E. to display the MTU values for each router in a specified network path from source to a destination.
第7题:
A.path cisco.com
B.debug cisco.com
C.trace cisco.com
D.traceroute cisco.com
第8题:
A.traceroute-d
B.ping-t
C.netstat-ano
D.nbtstat-a
第9题:
A user complains that the network printer is not printing. The system administrator knows there is a print queue for the network printer and needs to check on the queue. Which command is run?()
第10题:
Which command can be used from a PC to verfy the connectivity between host that connect through path?()