7.3.2 Connectivity Verification
What process is used in ICMPv6 for a host to verify that an IPv6 address is unique before configuring it on an interface? -SLAAC -ARP -EUI-64 -DAD
DAD (Duplicate Address Detection)
Which protocol is used by ping to test connectivity between network hosts? -ARP -DHCP -TCP -ICMP
ICMP
Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host? -ARPv6 -ICMPv6 -DHCPv6 -UDP
ICMPv6
What is indicated by a successful ping to the ::1 IPv6 address? -IP is properly installed on the host. -The default gateway address is correctly configured. -The host is cabled properly. -The link-local address is correctly configured. -All hosts on the local link are available.
IP is properly installed on the host.
What characterizes a traceroute utility? -It utilizes the ICMP Route Redirection messages. -It sends four Echo Request messages. -It identifies the routers in the path from a source host to a destination host. -It is primarily used to test connectivity between two hosts.
It identifies the routers in the path from a source host to a destination host.
What message is sent by a host to check the uniqueness of an IPv6 address before using that address? -Neighbor Solicitation (NS) -Router Solicitation (RS) -ARP request -Echo request
Neighbor Solicitation (NS)
A user issues a ping 192.168.219.8 command and receives a response that includes a code of 0. What does this code represent? -Network Unreachable -Host Unreachable -Port Unreachable -Protocol Unreachable
Network Unreachable
A user issues a ping 2001:db8:3040:114::88 command and receives a response that includes a code of 3. What does this code represent? -Network Unreachable -Host Unreachable -Port Unreachable -Protocol Unreachable
Port Unreachable
Which ICMPv6 message is sent when the IPv6 hop limit field of a packet is decremented to zero and the packet cannot be forwarded? -Port unreachable -Protocol unreachable -Network unreachable -Time exceed
Time exceeded
Why would a manager need to use the tracert command? -To query the Domain Name System (DNS) to get domain names and mapping information. -To display a list of the near-side router interfaces between the source device and the destination device. -To display a list of current processes running on a local or a remote computer. -To quickly verify connectivity by sending echo-request messages to the destination and receiving a series of echo-reply messages from that destination.
To display a list of the near-side router interfaces between the source device and the destination device.
A user complains that the workstation cannot access the network. The network technician asks the user to issue the ping 127.0.0.1 command. What is the purpose of using this command? -To verify that the NIC is configured with a static address. -To test the reachability of a remote network. -To verify that the TCP/IP stack is operational. -To check that the workstation can reach a DHCP server.
To verify that the TCP/IP stack is operational.
A user executes a traceroute over IPv6. At what point would a router in the path to the destination device drop the packet? -When the router receives an ICMP time exceeded message. -When the value of the Hop Limit field reaches 255. -When the target host responds with an ICMP echo reply message. -When the value of the Hop Limit field reaches zero.
When the value of the Hop Limit field reaches zero.
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
