e13 - ICMP

(13.3.4) 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

. (period)

(13.1.6) Which two types of ICMP messages are common to both ICMPv4 and ICMPv6? (Choose two.) - Destination or Service Unreachable - Hostname resolution - IP configuration - Source Unreachable - Time exceeded

Destination or Service Unreachable Time exceeded

(13.3.4) What field content is used by ICMPv6 to determine that a packet has expired? Time Exceeded field TTL field CRC field Hop Limit field

Hop Limit field

(13.3.4) Which protocol is used by IPv4 and IPv6 to provide error messaging? NDP DHCP ICMP ARP

ICMP

(13.3.4) Which protocol provides feedback from the destination host to the source host about errors in packet delivery? DNS ICMP BOOTP ARP

ICMP

(13.1.6) Which type of ICMPv6 message would a host send to acquire an IPv6 configuration when booting up? - Neighbor Advertisement (NA) message - Neighbor Solicitation (NS) message - Router Advertisement (RA) message - Router Solicitation (RS) message

Router Solicitation (RS) message

(13.3.4) A user calls to report that a PC cannot access the internet. The network technician asks the user to issue the command ping 127.0.0.1 in 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 Internet. However, the web browser may not work. - The IP address obtained from the DHCP server is correct. - The TCP/IP implementation is functional. - The PC can access the network. The problem exists beyond the local network.

The TCP/IP implementation is functional.

(13.3.4) What is a function of the tracert command that differs from the ping command when they are used on a workstation? - The tracert command reaches the destination faster. - The tracert command is used to test the connectivity between two devices. - 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 shows the information of routers in the path.

(13.3.4) What message is sent by a host to check the uniqueness of an IPv6 address before using that address? router solicitation echo request neighbor solicitation ARP request

neighbor solicitation

(13.3.4) Which command can be used to test connectivity between two devices using echo request and echo reply messages? ICMP ping netstat ipconfig

ping

(13.3.4) Which utility uses the Internet Control Messaging Protocol (ICMP)? DNS ping NTP RIP

ping

(13.3.4) Which two things can be determined by using the ping command? (Choose two.) - 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 destination device is reachable through the network - the IP address of the router nearest the destination device - the average time it takes a packet to reach the destination and for the response to return to the source

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

(13.3.4) Which ICMP message is used by the traceroute utility during the process of finding the path between two end hosts? - time exceeded - redirect - ping - destination unreachable

time exceeded

(13.3.4) 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 request that gateway forward the connection request to the file server - to resolve the domain name of the file server to its IP address - to obtain a dynamic IP address from the server

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

(13.3.4) A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at an ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed? traceroute telnet netstat ipconfig

traceroute

(13.3.4) 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 tracert ping ipconfig /flushdns

tracert