You are the network administrator at Certkiller .com. You want to test connectivity between a
workstation and the Certkiller .com server. Which command would you use?

A.
ping

B.
arp -a

C.
ipconfig /all

D.
winipcfg /all

Explanation:
Ping is used to test connectivity between two hosts using the IP address of the remote hosts.
Incorrect Answers:
B: Thearp utility is useful for resolving duplicate IP addresses. The arp -a command displays the
local ARP table which lists the IP address to MAC address mappings. It does not test connectivity
between two hosts.
C: ipconfig /alldisplays the IP configuration and MAC address for the local workstation. It does not
test connectivity between two hosts.
D: winipcfg is the Windows 9x version of ipconfig and displays the IP configuration and MAC
address for the local workstation. It does not test connectivity between two
hosts.References:David Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex,
Alameda CA, 2005, pp. 186-188, 194.