IT Networking

A technician is troubleshooting a network where it is suspected that a defective node in the network path is causing packets to be dropped. The technician only has the IP address of the end point device and does not have any details of the intermediate devices. What command can the technician use to identify the faulty node?

• ipconfig /displaydns

• ping

• ipconfig /flushdns

• tracert

A user who is unable to connect to the file server contacts the help desk. The helpdesk technician asks the user to ping the IP address of the default gateway that is configured on the workstation. What is the purpose for this ping command?

• to test that the host has the capability to reach hosts on other networks

• to resolve the domain name of the file server to its IP address

• to obtain a dynamic IP address from the server

• to request that gateway forward the connection request to the file server

What is a function of the tracert command that differs from the ping command when they are used on a workstation?

• The tracert command shows the information of routers in the path.

• The tracert command sends one ICMP message to each hop in the path.

• The tracert command is used to test the connectivity between two devices.

• The tracert command reaches the destination faster.

Which ICMP message is used by the traceroute utility during the process of finding the path between two end hosts?

• ping

• redirect

• time exceeded

• destination unreachable

Which utility uses the Internet Control Messaging Protocol (ICMP)?

• RIP

• ping

• NTP

• DNS

Which protocol is used by IPv4 and IPv6 to provide error messaging?

• ICMP

• NDP

• ARP

• DHCP

A network administrator is testing network connectivity by issuing the ping command on a router. Which symbol will be displayed to indicate that a time expired during the wait for an ICMP echo reply message?

• $

• .

• !

• U

Which two things can be determined by using the ping command? (Choose two.)

• the destination device is reachable through the network

• the average time it takes a packet to reach the destination and for the response to return to the source

• the number of routers between the source and destination device

• the average time it takes each router in the path between source and destination to respond

• the IP address of the router nearest the destination device

A user calls to report that a PC cannot access the internet. The network technician asks the user to issue the command ping 127.0.0.1in a command prompt window. The user reports that the result is four positive replies. What conclusion can be drawn based on this connectivity test?

• The PC can access the network. The problem exists beyond the local network.

• The TCP/IP implementation is functional.

• The PC can access the Internet. However, the web browser may not work.

• The IP address obtained from the DHCP server is correct.

Which command can be used to test connectivity between two devices using echo request and echo reply messages?

• ping

• ICMP

• netstat

• ipconfig