问题 $ [) y6 _3 e" I& u% z; Y
Which command can verify Application Layer connectivity between 2 hosts? 6 Y2 {* A7 N3 M- F; A* C
A. arp ' o/ p1 {: W% B, D7 C0 f0 MB. ping 0 y4 r: s- e& LC. telnet / I- b. [5 b5 v5 N+ |1 J4 N
D traceroute 3 M" {9 N4 B9 kE. plp ) F1 ]8 [$ \! V* _3 }$ k9 G问题问题意思：以下呼吁傍边阿谁是在应用财揭捉证两个主机的联通性的呼吁？ " |# a2 w$ i* ETelnet tests the Application layer, ping test the Network layer.Telnet is an application used to remotely configure a device. If telnet is succesfful you know that full 7 layer stack on the sending and receiving host are configured correctly and are in working order % E# Y2 q& Y3 H! Z因为telnet呼吁是工作在应用层，ping呼吁是工作在收集层的，telnet是应用于远程节制设备的，所以如不美观能telnet成功的话，这就证了然两台主机或设备已经联通了，在联通性膳缦沔已经没有问题了。 ( ^/ K) @% f1 [! B; A3 F+ ]* `% U4 ]: b
该问题问题首要考学员呼吁工作的层面，和OSI七层的关系。 * G) Z1 b3 C* O& v" R" `
正确谜底：C
发表于 2012-8-3 20:28:11
