Troubleshooting Routing Flashcards
You manage a network with multiple subnets connected to the Internet.
A user reports that she can’t access the Internet. You investigate the problem and find that she can access all
hosts on the private network, but no hosts on the Internet.
Which of the following is likely the cause of the problem?
Missing default route on a router
Switching loop on the user’s subnet
Incorrect default gateway setting on the computer
Duplex mismatch between a switch and a router
Missing default route on a router
You are the network administrator of a branch office of your company. The branch office network is part of a
WAN that covers most of the United States. The office has two Windows 2000 servers, two UNIX servers, one
Windows NT server, 90 Windows 98 clients, 40 Windows 2000 Professional clients, and five Macintosh clients.
Users have been complaining that they are unable to access resources over the WAN at the main
headquarters. You suspect that one of the routers between your office and the main headquarters is not
working properly.
What TCP/IP utility can you use to see if a router is not working properly?
nslookup
tracert
netstat
nbtstat
tracert
You have just connected a new computer to your network. The network uses static IP addressing.
You find that the computer can communicate with hosts on the same subnet, but not with hosts on a different
subnet. No other computers are having a problem.
Which of the configuration values would you most likely need to change?
IP address
DNS server
Default gateway
Subnet mask
Default gateway
Which of the following commands would display the output shown here?
host
mtr
route print
ifconfig
route print
You manage a network with multiple subnets connected to the Internet.
A user reports that she can’t access the new server used in the accounting department. You check the
problem and find out that her computer cannot access any server on that subnet, however the computer does
access other computers on other subnets as well as the Internet.
Which of the following is most likely the cause of the problem?
Switching loop on the user’s subnet
Incorrect default gateway setting on the computer
Missing route on the default gateway router
Incorrect VLAN membership of the accounting server
Missing route on the default gateway router
ou have configured a remote access server to accept dial-up connections for remote access clients.
Remote clients are able to connect successfully and access resources on the remote access server. However,
the remote clients are not able to connect to other devices located on the same subnet where the remote
access server is located.
Which action would likely correct the problem?
Enable proxy arp on the LAN connection for the remote access server.
Move the remote access policy from the remote access server to a RADIUS server.
Flush the ARP cache on each client computer on the private network.
Run the spanning tree protocol on the remote access server.
Enable proxy arp on the LAN connection for the remote access server.
You are troubleshooting access to a server in a remote network. You use the tracert command and see the
following:
Tracing route to 192.168.2250
over a maximum of 30 hops:
1 2 ms 2 ms 2 ms 192.168.12.11
2 2 ms 2 ms 2 ms 192.168.11.1
3 5 ms 5 ms 3 ms 192.168.10.15
4 2 ms 2 ms 2 ms 192.168.9.1
5 5 ms 5 ms 3 ms 192.168.11.1
6 2 ms 2 ms 2 ms 192.168.10.15
7 5 ms 5 ms 3 ms 192.168.9.1
additional output omitted
What is the problem?
Broadcast storm
Switching loop
Routing loop
Missing default route
Routing loop
Which of the following utilities would you use to view the routing table?
mtr
route
tracert
dig
traceroute
route
Examine the following output:
4 22 ms 21 ms 22 ms sttlwaOlgro2.bb.ispxy.com [154.11.10.62]
5 39 ms 39 ms 65 ms plalcaOlgrOO.bb.ispxy.com [154.11.12.11]
6 39 ms 39 ms 39 ms Rwest.plalcao1gro0.bb.ispxy.com [154.11.3.14]
7 40 ms 39 ms 46 ms SVl-core-03.inet.ispxy.net [205.171.205.29]
8 75 ms 117 ms 63 ms dia-core-Ol.inet.ispxy.net [205.171.142.1]
Which of these commands produced this output?
nslookup
ping
pingroute
tracert
tracert
