You want to verify the configuration register
entry of a Cisco 2500 series router. What
command should you use on the router?
a. show config-reg
b. show version
c. show register
d. show running-config
e. show bootflash
f. show flash
Users on a network subnet experience slow
connectivity when trying to access file servers
located on another LAN segment. There are more
than 200 users on the subnet. A Cisco 2500
router serves as the default gateway as well as
the firewall for the subnet. You suspect the
problem could be caused by excessive CPU
utilization on the router.
What command will verify that this is the case?
a. show cpu
b. show cpu utilization
c. show cpu processes
d. show hardware
e. show processes cpu
Which four of the following must you know about
configuring passwords on a Cisco router?
a. It is possible to configure all
line access passwords during setup
b. All passwords
can be encrypted.
c. Each line access port can be
assigned a password.
d. Local database can be used for
e. External Radius or TACACS servers
can be used for password authentication.
f. Only privileged configuration mode
can be assigned a password.
Which three of the following information is
gathered by the Cisco Discovery Protocol?
a. Hardware platform.
b. All addresses
of each layer 3 protocol.
c. Only one address of each layer 3
d. Routing table.
e. Routing protocol .
f. Device ID.
It was a Saturday morning. You had just been
waked up by a pager call about a connectivity
problem between a branch router and the head
office router. Both routers are connected via a
leased line. The link needs to be up 24-hour a
day because it carries important financial
You began your troubleshooting by trying to
connect to the branch router using telnet but
failed. Fortunately, you managed to connect to a
dial up modem attached to the branch router. You
did a 'show interface' command on the router.
The result is shown below:
0 output buffer failures, 0 output buffers
11 carrier transitions
DCD=down DSR=down DTR=down RTS=down
Based on the output of the 'show interface
serial 0/0' command issued on the branch router,
which OSI layer is most likely causing the
Geoff is a network administrator of a small
network consists of three Cisco 2600 routers
interconnected by a frame relay cloud. One day,
he wants to add a static route to one of the
remote router. He connects to the router using
telnet from his workstation. Which layer of the
OSI protocol stack is Geoff using for this task?
From the seven OSI layers, which layer is
responsible for error recovery and reliability?
You are a network consultant for Super LAN
Interconnect, Inc. (SLII). One of your clients
has a flat Ethernet network with 500 end-users
and server farms. The network performance is
poor from time to time.
The client hires your company to do analysis and
redesign the current network infrastructure to
improve performance. You recommend to segment
the flat network into multiple segments. What is
the benefit of your solution to solve the
It will increase the number of collision
will decrease the broadcast domains.
total cost of ownership (TCO).
More users can be allocated within a single
collision domains without the need of layer
To understand the operation of bridges is
essential to understand the operation of
switches. Which three of the following
characterize the correct operation of bridges
Bridges are inherently more robust and
faster than switches.
operate at data link layer while bridges
operate at physical layer.
bridges and switches forward data link layer
commonly have a higher port density compared
are mainly software based while bridges are
create collision domains while bridges
define broadcast domains.
bridges and switches forward traffic based
on layer 2 addresses
Acme Provisioning, Inc., a local IT integration
provider, has just completed redesigning its
campus LAN with VLAN segmentation. You, as the
company's network administrator, have been
tasked to connect 10 Windows XP Professional
workstations to the access-layer switches
(Catalyst 2900XL switches).
You verify that correct IP address, subnet mask,
default gateway, and DNS servers have been
configured on all PCs. You have also checked
that correct Category 5 cabling are used for the
connection. However, some workstations are
experiencing problems connecting to other
workstations on the same switch.
Which of the following is most likely cause of
The access-layer switch does not
propagate the host routing entries to the
core layer switches.
The switch ports on which the workstations
are connected to are configured with
The workstations have been configured with
invalid MAC addresses.
Spanning-Tree Protocol (STP) has been
disabled on those switch ports.
The router that performs intra-VLAN routing
does not have route entries for the
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