Correct option is C
The
ping command is a
network utility tool used to test the
reachability of a host on an IP network. It operates by sending
ICMP (Internet Control Message Protocol) Echo Request messages to the target host and waiting for a response. The results include:
·
Packet loss (percentage of lost packets).
·
Round-trip time (RTT) (time taken for a packet to travel to the destination and back).
Important Key Points:
1.
How the Ping Command Works?
· Sends
ICMP Echo Request messages to a target host.
· Receives
ICMP Echo Reply messages if the host is reachable.
· Measures
packet loss and round-trip delay (RTT).
2.
Example of the Ping Command Usage:
ping google.com
Sample Output:
Pinging google.com [142.250.183.14] with 32 bytes of data:
Reply from 142.250.183.14: bytes=32 time=20ms TTL=118
Reply from 142.250.183.14: bytes=32 time=22ms TTL=118
Ping statistics for 142.250.183.14:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milliseconds:
Minimum = 20ms, Maximum = 22ms, Average = 21ms
Knowledge Booster:
· Ping is commonly used for network diagnostics and troubleshooting.
· If a host does not respond to a ping, it may be down or blocked by a firewall.
· The tracert (Windows) or traceroute (Linux) command tracks the path of packets to a destination.
·
(a) Ping stands for Packet Internet Generator → ❌ Incorrect:
PING stands for "Packet InterNet Groper",
not Packet Internet Generator.
·
(b) The ping command checks the port-level connectivity → ❌ Incorrect:
Ping does NOT check port-level connectivity.
It only tests network reachability; to check open ports, use
Telnet or Netcat.