CCNA 3

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A switch is operating in VTP client mode. What is true about the operations that can be performed by the switch?
 
VLANs that are created are not included in advertisements.
It can only adopt VLAN changes advertised from a VTP server.*
It advertises topology changes out all trunk ports.
It can modify existing VLANs, but can not create new ones.
It can create and modify VLANs, but can not delete existing ones.
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Why would a network administrator choose to enable authentication for OSPF exchanges? (Choose two.)
 
to prevent routing information from being falsified*
to reduce OSPF information exchange overhead
to assure that OSPF routing information takes priority over RIP or IGRP updates
to encrypt routing tables to prevent unauthorized viewing
to ensure that routing information comes from a valid source*
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A network administrator asked an assistant to remove several VLANs from a switch. When the assistant entered in the no vlan 1 command an error was received. What was the cause of the error?
 
VLANs can not be deleted until all ports have been removed from the VLAN assignment.
VLANs can only be deleted by the user that created them.
VLAN 1 can not be deleted until another VLAN has been assigned its duties.
VLAN1 is the management VLAN by default and can not be deleted.*
The command was not entered properly, which caused a syntax error to occur.
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Employees of XYZ Company connect their laptop computers to the office LAN using Ethernet ports. The Cisco switches used in the company network are configured with port security. At which layer of the three-layer design model do these switches operate?
 
physical
distribution
data link
access*
core
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Which of the following statements is true when VTP is configured on a switched network that incorporates VLANs?
 
VTP is only compatible with the 802.1Q standard.
VTP adds to the complexity of managing a switched network.
All VTP hello packets are routed through VLAN 1 interfaces.
Changes made to the network can be communicated to all switches dynamically.*
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Which of the following tasks must be completed to configure a router interface to serve the newly added network 192.168.10.64/27 and to advertise this network over RIP v2? (Choose three.)
 
RIP v2 must be configured with the network command and the IP network number for the new network.*
 
RIP v2 must be configured with the network command and the IP host address and subnet mask for the newly activated interface.
 
The router must be configured with the ip subnet-zero command so that this network can be added and advertised.
 
A network host address and subnet mask must be applied to the newly activated interface.*
 
The routing protocol must be activated with the router rip and version 2 commands.*
 
RIP v2 must be configured on the other enterprise routers with an entry for the newly added network.
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Which layer of the hierarchical three-layer design model combines traffic from multiple IDFs?
 
access
backbone
distribution*
core
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A company has been assigned three Class C addresses and requires the use of supernetting in its addressing scheme. Which routing protocol could be used to configure the company routers to support supernetting? (Choose two.)
 
a classless routing protocol*
a classful routing protocol
OSPF*
IGRP
RIP v1
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Which device provides connectivity between IP routed networks and subnetworks?
 
switch
bridge
router*
active hub
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Which statements describe features of full-duplex Ethernet? (Choose three.)
 
allows packets to be received and sent simultaneously by a host*
requires a minimum of two wires
reduces the number of collisions*
allocates between 60 and 80 percent of available bandwidth in both directions
allocates 100 percent of the bandwidth in both directions*
increases the number of broadcast domains
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The network administrator shown in the graphic is connected to Switch3 using a LAN Ethernet connection. The administrator needs to verify configuration settings on the newly installed Switch2. What actions must the administrator take to access Switch2 with a web browser? (Choose three.)
 
Configure the hostname on Switch2.
Activate the HTTP service on Switch2.*
Set the management VLAN password.
Configure IP addressing parameters on Switch2.*
Establish host connectivity to Switch2.*
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Refer to the graphic. If the network is running OSPF, which subnetworks can be assigned to the serial links between Router2 and the other routers shown in the diagram?
 
192.1.1.4/30 and 192.1.1.8/30
192.1.1.32/30 and 192.1.1.160/30
192.1.1.96/30 and 192.1.1.100/30
192.1.1.160/30 and 192.1.1.164/30
192.1.1.192/30 and 192.1.1.196/30*
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Which of the following are attributes of link-state routing protocols? (Choose three.)
 
Periodic updates are sent every 120 seconds to neighboring routers.
Each router sends its entire routing table to neighboring routers.
Routers send updates when a change in the network is detected.*
Link-state protocols converge more rapidly than distance vector protocols.*
After convergence, link-state protocols use more bandwidth than distance vector protocols use.
Link-state protocols are less prone to routing loops than distance vector protocols.*
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Which command configures the static address shown in the graphic?
 
Switch1(config)#mac-address-table entry 00e0.2917.1884 VLAN 1 fastethernet 04
Switch1(config-if)#mac-address-table entry static 00e0.2917.1884 VLAN 1 fastethernet 04
Switch1(config)#mac-address-table entry 00e0.2917.1884 fastethernet interface 0/4 VLAN 1
Switch1(config)#mac-address-table static 00e0.2917.1884 interface fastethernet 0/4 VLAN 1*
Switch1(config-if)#mac-address-table static 00e0.2917.1884 VLAN 1 fastethernet 04
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The following command was added to a router's configuration: ip route 192.168.20.0 255.255.255.0 172.16.15.3. What will adding this command accomplish? (Choose two.)
 
A default route will be created.
A static route will be created.*
Information about the 192.168.20.0 network learned dynamically will be ignored as long as the static route exists.*
All packets with an unknown destination address will be forwarded out interface 192.168.20.245.
The route will be added as a RIP route in the routing table.
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Which command is used to obtain the information presented in the above graphic?
 
show vlan ifindex
show vlan id
show vlan brief*
show running-config
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How do EIGRP routers actively maintain neighbor relationships?
 
by the exchange of hello packets with neighboring routers
by dynamically learning new routes from neighbors
by the exchange of neighbor tables with directly attached routers
by comparing known routes to received updates
by the exchange of routing tables with directly attached routers*
by continuously monitoring the status of the router ports
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What is the first step in the spanning-tree process?
 
elect a designated switch
use a router to locate a default gateway
elect a root bridge*
determine the path cost of each active port on the switch
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Refer to the graphic. Which commands would direct outbound traffic from R1 to the ISP and inbound traffic from the ISP to network 200.1.1.0?
 
R1(config)# ip route 144.1.1.0 255.255.255.192 serial 0/0
ISP(config)# ip route 0.0.0.0 0.0.0.0 serial 0/1
 
R1(config)# ip route 0.0.0.0 0.0.0.0 serial 0/0
ISP(config)# ip route 0. 0.0.0 0.0.0.0 serial 0/0
 
R1(config)# ip route 0.0.0.0 0.0.0.0 serial 0/0*
ISP(config)# ip route 200.1.1.0 255.255.255.0 serial 0/1*
 
R1(config)# ip route 144.1.1.0 255.255.255.192 serial 0/0
ISP(config)# ip route 200.1.1.0 255.255.255.0 serial 0/1
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Which switching method increases latency and reliability more than any other method?
 
cut-through
fast-forward
fragment-free
store-and-forward*
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Consider the networks shown in the graphic. Which of the following is the correct configuration for Router B if OSPF is being used as the routing protocol?
 
B(config)# router ospf 0
B(config-router)# network 10.10.10.64 0.0.0.31 area 0
B(config-router)# network 10.10.10.0 0.0.0.3 area 0
 
B(config)# router ospf 1
B(config-router)# network 10.10.10.64 0.0.0.63 area 0
B(config-router)# network 10.10.10.0 0.0.0.3 area 0
 
B(config)# router ospf 99
B(config-router)# network 10.10.10.64 255.255.255.224 area 0
B(config-router)# network 10.10.10.0 255.255.255.248 area 0
 
B(config)# router ospf 1*
B(config-router)# network 10.10.10.64 0.0.0.31 area 0*
B(config-router)# network 10.10.10.0 0.0.0.3 area 0*
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What does a constant amber SYSTEM LED indicate on a Catalyst switch?
 
The switch is going through POST.
The switch is in the process of initializing ports.
The switch has failed POST.
The switch has passed POST and is working properly.*
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Refer to the graphic. What is the first parameter used to determine which switch is selected as the root bridge in the spanning-tree process?
 
highest Layer 2 address
highest priority number
highest path cost
lowest Layer 2 address
lowest priority number*
lowest path cost
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A network administrator is having problems with excessive collisions on the corporate network. If the network currently uses hubs, what is the most cost effective way to reduce collisions?
 
add additional hubs
replace hubs with switches *
replace hubs with access points
add a router to every hub segment
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One part of the network shown in the graphic uses IGRP and another part uses EIGRP. Which statement is true about this network?
 
IP traffic will not be routable from network 192.168.1.0 to network 10.1.1.0.
The autonomous system number in the IGRP network must be converted to an EIGRP autonomous system number.
The route to network 192.168.1.0 will be tagged as external by the EIGRP routers.*
The IGRP router will classify routes learned from the EIGRP routers as internal.
The IGRP router will not detect EIGRP routers.
EIGRP is not backward compatible and the IGRP routes will not be detected.
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Which of the following features do RIPv1 and RIPv2 have in common? (Choose three.)
 
hop count as a metric*
classless routing
use split horizon*
maximum hop count is 15*
broadcast updates
no authentication
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When configuring the networks that need to be advertised on a router using EIGRP, which of the following can be configured on the router? (Choose three.)
 
the network number*
subnet mask
wildcard mask*
process number
area ID
autonomous system number*
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Refer to the graphic. The host on VLAN 2 cannot communicate with the host on VLAN 3. Which of the following could be the problem based on the output of the show interface fastethernet 0/1 command from the switch?
 
The switch port 1 is not set to access mode.
The router interface connected to switch port 1 is shut down.*
The router is not configured for trunking.
The switch port is not configured for full duplex or a speed of 100 Mbps.
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Refer to the graphic above. The network has stabilized and SW-F has been elected root bridge of the STP tree. Network traffic indicates that SW-A would be a better selection for the root bridge. How can the network administrator accomplish this task?
 
change the bridge priority of SW-F to a lower value
change the bridge priority of SW-F to a higher value
change the bridge priority of SW-A to a lower value*
change the bridge priority of SW-A to a higher value
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Refer to the graphic. Which of the following commands is used to configure switch port 2 for the host on VLAN 2?
 
(config)# interface fastethernet 0/2*
(config-if)# switchport mode access*
(config-if)# switchport access vlan 2*
 
(config)# interface vlan 2
(config-subif)# switchport mode access 2
 
(config)# interface vlan 2
(config-subif)# switchport mode trunk dot1q
 
(config)# interface fastethernet 0/2
(config-if)# vlan 2
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Which of the following statements are true about routers that are running EIGRP? (Choose three.)
 
They can support multiple routed protocols.*
They can support only link-state protocols.
They send their entire routing tables to neighboring routers.
They send partial routing updates in response to topology changes.*
They send routing updates to all other routers in the network.
They use hello packets to inform neighboring routers of their status.*
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A network administrator located at the East site needs to check the configuration of a switch located at the Corporate site. The show hosts command is entered on the East router but does not produce any output. Which command can be used to gain access to the Corporate LAN switch assuming the switch is assigned the IP address 172.16.15.5/24?
 
dial Corporate 172.16.15.5
line vty 0 4
telnet
telnet Corporate
telnet 172.16.15.5*
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What is an advantage of building a network such as the one shown in the graphic?
 
provides multiple paths for connectivity in the event of link failure*
provides alternate routes when spanning tree has a problem
provides alternate network routes when the Spanning Tree Protocol is converging
provides concurrent paths for faster data transfers
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What type of connectivity (refer to point A in the graphic) is required between SW1 and SW2? Note that SW1 has VLANs 2, 3, 4, and 5 configured and SW2 has VLANs 5, 6, 7, and 8 configured. Also, the computers on the same VLAN need the ability to communicate with one another.
 
access
channel
interVLAN
intraVLAN
trunk*
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Refer to the graphic and the following configurations from the routers. Router A is not receiving any OSPF routes from the other routers. Based on the Router A and Router B configurations, what is the problem?

A# show running-config
--output omitted--
interface Fastethernet 0/0
ip address 192.168.10.65 255.255.255.192
interface Serial 0/0
ip address 192.168.10.2 255.255.255.252
clockrate 64000
router ospf 1
network 192.168.10.0 0.0.0.3 area 0
network 192.168.10.64 0.0.0.63 area 0

B# show running-config
--output omitted--
interface Fastethernet 0/0
ip address 192.168.10.129 255.255.255.192
interface Serial0/0
ip address 192.168.10.2 255.255.255.252
interface Serial0/1
ip address 192.168.10.5 255.255.255.252
clockrate 56000
router ospf 2
network 192.168.10.0 0.0.0.3 area 0
network 192.168.10.4 0.0.0.3 area 0
network 192.168.10.128 0.0.0.63 area 0
 
duplicate IP address*
mismatched OSPF process IDs
mismatched OSPF timers
mismatched clock rates
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Which of the following is true about Spanning Tree Protocol? (Choose two.)
 
eliminates physical loops in network topologies
eliminates logical loops in network topologies*
can only be used in networks where routers are installed
can only be used in networks where switches are incorporated into the design*
can only be used in networks where both routers and switches are used
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A company with the address 192.168.3.0 needs an address scheme that supports ten networks with a maximum of seven hosts per segment. The network administrator wants to use VLSM for the most efficient use of addresses. What is a valid address to assign to one of the LAN links?
 
192.168.3.192
192.168.3.209*
192.168.3.223
192.168.3.225
192.168.3.235
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Which of the following commands can be used to configure the default management VLAN on a Cisco Catalyst switch?
 
(config)# interface fastethernet 0/1
(config-if)# ip address 10.0.0.1 255.255.255.0
(config-if)# no shutdown
 
(config)# interface vlan 1*
(config-subif)# ip address 10.0.0.3 255.255.255.0*
(config-subif)# no shutdown*
 
(config)# interface management vlan
(config-subif)# ip address 10.0.0.3 255.255.255.0
(config-subif)# no shutdown
 
(config)# interface fastethernet 0/1
(config-if)# switchport mode vlan 1
(config-if)# no shutdown
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When should EIGRP automatic summarization be turned off?
 
when a router has not discovered a neighbor within three minutes
when a router has more than three active interfaces
when a router has discontiguous networks attached*
when a router has less than five active interfaces