On a VLSM network, which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses?
/27
/28
/29
/30
/31
In the network shown in the diagram, how many computers could be in Network B?
6
12
14
30
In the following diagram, in order to have IP addressing that’s as efficient as possible, which network should use a /29 mask?
A
B
C
D
To use VLSM, what capability must the routing protocols in use possess?
Support for multicast
Multiprotocol support
Transmission of subnet mask information
Support for unequal load balancing
What summary address would cover all the networks shown and advertise a single, efficient route to Router B that won’t advertise more networks than needed?
172.16.0.0/24
172.16.1.0/24
172.16.0.0/25
172.16.0.0/20
172.16.16.0/28
172.16.0.0/27
In the following diagram, what is the most likely reason the station cannot ping outside of its network?
The IP address is incorrect on interface E0 of the router.
The default gateway address is incorrect on the station.
The IP address on the station is incorrect.
The router is malfunctioning.
If a host is configured with an incorrect default gateway and all the other computers and router are known to be configured correctly, which of the following statements is TRUE?
Host A cannot communicate with the router.
Host A can communicate with other hosts in the same subnet.
Host A can communicate with hosts in other subnets.
Host A can communicate with no other systems.
Which of the following troubleshooting steps, if completed successfully, also confirms that the other steps will succeed as well?
Ping a remote computer.
Ping the loopback address.
Ping the NIC.
Ping the default gateway.
When a ping to the local host IP address fails, what can you assume?
The IP address of the local host is incorrect.
The IP address of the remote host is incorrect.
The NIC is not functional
The IP stack has failed to initialize.
When a ping to the local host IP address succeeds but a ping to the default gateway IP address fails, what can you rule out? (Choose all that apply.)
The IP address of the gateway is incorrect.
The IP stack has failed to initialize
Which of the networks in the diagram could use a /29 mask?
Corporate
LA
SF
NY
None
What network service is the most likely problem if you can ping a computer by IP address but not by name?
DNS
DHCP
ARP
ICMP
When you issue the ping command, what protocol are you using?
Which of the following commands displays the networks traversed on a path to a network destination?
ping
traceroute
pingroute
pathroute
What command generated the output shown below?
show ip route
pathping
In the work area, match the command to its function on the right.
__________________________________________________________________________________ | traceroute | Shows you the PC network configuration | __________________________________________________________________________________ | arp -a | Displays IP-to-MAC-address mappings on a Windows PC | __________________________________________________________________________________ | show ip arp | Displays the ARP table on a Cisco router | __________________________________________________________________________________ | ipconfig /all | Displays the list of routers on a path to a network destination | _________________________________________________________________________________
__________________________________________________________________________________ | traceroute | Displays the list of routers on a path to a network destination | __________________________________________________________________________________ | arp -a | Shows you the PC network configuration | __________________________________________________________________________________ | show ip arp | Displays the ARP table on a Cisco router | __________________________________________________________________________________ | ipconfig /all | Displays IP-to-MAC-address mappings on a Windows PC | __________________________________________________________________________________
__________________________________________________________________________________ | traceroute | Displays the list of routers on a path to a network destination | __________________________________________________________________________________ | arp -a | Displays IP-to-MAC-address mappings on a Windows PC | __________________________________________________________________________________ | show ip arp | Displays the ARP table on a Cisco router | __________________________________________________________________________________ | ipconfig /all | Shows you the PC network configuration | __________________________________________________________________________________
__________________________________________________________________________________ | traceroute | Displays the list of routers on a path to a network destination | __________________________________________________________________________________ | arp -a | Displays IP-to-MAC-address mappings on a Windows PC | __________________________________________________________________________________ | show ip arp | Shows you the PC network configuration | __________________________________________________________________________________ | ipconfig /all | Displays the ARP table on a Cisco router | __________________________________________________________________________________
17. Which of the following network addresses correctly summarizes the three networks shown below efficiently? 10.0.0.0/16 10.1.0.0/16 10.2.0.0/16
10.0.0.0/15
10.1.0.0/8
10.0.0.0/14
10.0.0.8/16
What command displays the ARP table on a Cisco router?
show ip arp
arp -a
tracert
What switch must be added to the ipconfig command on a PC to verify DNS configuration?
/dns
-dns
/all
showall
Which of the following is the best summarization of the following networks: 192.168.128.0through 192.168.159.0?
192.168.0.0/24
192.168.128.0/16
192.168.128.0/19
192.168.128.0/20