CCNA 3 Exam
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- 1.A network designer is considering whether toimplement a switch block on the company network.What is the primary advantage of deploying a switchblock?
- A.
A single core router provides all the routing between VLANs.
- B.
The failure of a switch block will not impact all end users.
- C.
This is a security feature that is available on all new Catalyst switches.
- D.
This is network application software that prevents the failure of a single network device.
- 2.Which characteristic would most influence a networkdesign engineer to select a multilayer switch over aLayer 2 switch
- A.
Ability to build a routing table
- B.
Ability to aggregate multiple ports for maximum data throughput
- C.
Ability to provide power to directly-attached devices and the switch itself
- D.
Ability to have multiple forwarding paths through the switched network based on VLAN number(s)
- 3.What are three access layer switch features that areconsidered when designing a network? (Choose three.)
- A.
Broadcast traffic containment
- B.
Failover capability
- C.
Forwarding rate
- D.
Port density
- E.
Power over Ethernet
- F.
Speed of convergence
- 4.In a large enterprise network, which two functions areperformed by routers at the distribution layer? (Choosetwo.)
- A.
Connect remote networks
- B.
Provide Power over Ethernet to devices
- C.
Connect users to the network
- D.
Provide data traffic security
- E.
Provide a high-speed network backbone
- 5.A set of switches is being connected in a LAN topology.Which STP bridge priority value will make it least likelyfor the switch to be selected as the root?
- A.
4096
- B.
32768
- C.
61440
- D.
65535
- 6.
![Refer to the exhibit. Which switch will be the root bridgeafter the election process is complete? - ProProfs]( "Refer to the exhibit. Which switch will be the root bridgeafter the election process is complete?")
Refer to the exhibit. Which switch will be the root bridgeafter the election process is complete?- A.
S1
- B.
S2
- C.
S3
- D.
S4
- 7.
![Refer to the exhibit. What are the possible port roles forports A, B, C, and D in this RSTP-enabled network? - ProProfs]( "Refer to the exhibit. What are the possible port roles forports A, B, C, and D in this RSTP-enabled network?")
Refer to the exhibit. What are the possible port roles forports A, B, C, and D in this RSTP-enabled network?- A.
Alternate, root, designated, root
- B.
Designated, root, alternate, root
- C.
Alternate, designated, root, root
- D.
Designated, alternate, root, root
- 8.A network administrator enters the spanning-treeportfast bpduguard default command. What is theresult of this command being issued on a Cisco switch?
- A.
Any switch port will be error-disabled if it receives a BPDU.
- B.
Any trunk ports will be allowed to connect to the network immediately, rather than waiting to converge.
- C.
Any switch port that has been configured with PortFast will be error-disabled if it receives a BPDU.
- D.
Any switch port that receives a BPDU will ignore the BPDU message.
- 9.
![Refer to the exhibit. A network administrator is configuring PVST+ for the three switches. What will be aresult of entering these commands? - ProProfs]( "Refer to the exhibit. A network administrator is configuring PVST+ for the three switches. What will be aresult of entering these commands?")
Refer to the exhibit. A network administrator is configuring PVST+ for the three switches. What will be aresult of entering these commands?- A.
S1 will set the priority value for VLAN 10 to 0.
- B.
S2 will set the priority value for VLAN 10 to 24576.
- C.
S3 will set the priority value for VLAN 30 to 8192.
- D.
S1 will set the priority value for VLAN 20 to 24596.
- 10.
![Refer to the exhibit. Which destination MAC address isused when frames are sent from the workstation to thedefault gateway? - ProProfs]( "Refer to the exhibit. Which destination MAC address isused when frames are sent from the workstation to thedefault gateway?")
Refer to the exhibit. Which destination MAC address isused when frames are sent from the workstation to thedefault gateway?- A.
MAC address of the forwarding router
- B.
MAC addresses of both the forwarding and standby routers
- C.
MAC address of the standby router
- D.
MAC address of the virtual router
- 11.A network administrator is analyzing the features thatare supported by diffrent hop router redundancyprotocols. Which statement is a feature that isassociated with GLBP?
- A.
GLBP allows load balancing between routers.
- B.
It is nonproprietary.
- C.
It uses a virtual router master.
- D.
It works together with VRRP.
- 12.A network administrator is analyzing the features that are supported by diffrent first-hop router redundancyprotocols. Which statement describes a feature that isassociated with HSRP?
- A.
HSRP uses active and standby routers.
- B.
It uses ICMP messages in order to assign the default gateway to hosts
- C.
It allows load balancing between a group of redundant routers.
- D.
HSRP is nonproprietary.
- 13.Which function is provided by EtherChannel?
- A.
Spreading traffic across multiple physical WAN links
- B.
Dividing the bandwidth of a single link into separate time slots
- C.
Enabling traffic from multiple VLANs to travel over a single Layer 2 link
- D.
Creating one logical link by using multiple physical links between two LAN switches
- 14.Which mode configuration setting would allowformation of an EtherChannel link between switchesSW1 and SW2 without sending negotiation traffic?
- A.
SW1: on SW2: on
- B.
SW1: desirable SW2: desirable
- C.
SW1: auto SW2: auto trunking enabled on both switches
- D.
SW1: auto SW2: auto PortFast enabled on both switches
- E.
SW1: passive SW2: active
- 15.Which two channel group modes would place aninterface in a negotiating state using PAgP? (Choose two)
- A.
On
- B.
Desirable
- C.
Active
- D.
Auto
- E.
Passive
- 16.
- What are two requirements to be able to configure an EtherChannel between two switches? (Choose two.)
- A.
The interfaces that are involved need to be contiguous on the switch.
- B.
All the interfaces need to work at the same speed.
- C.
All the interfaces need to be working in the same duplex mode.
- D.
All interfaces need to be assigned to di푣erent VLANs.
- 17.
![Refer to the exhibit. Which two conclusions can bedrawn from the output? (Choose two.) - ProProfs]( "Refer to the exhibit. Which two conclusions can bedrawn from the output? (Choose two.)")
Refer to the exhibit. Which two conclusions can bedrawn from the output? (Choose two.)- A.
The EtherChannel is down.
- B.
The port channel ID is 2.
- C.
The port channel is a Layer 3 channel.
- D.
The bundle is fully operational.
- E.
The load-balancing method used is source port to destination port.
- 18.What two conditions have to be met in order to form acluster that includes 5 access points? (Choose two.)
- A.
Clustering mode must be enabled on the APs.
- B.
At least two controllers are needed to form the cluster.
- C.
The APs have to be connected on the same network segment.
- D.
The APs must all be configured to use different radio modes.
- E.
The APs must use different cluster names.
- 19.A remote classroom can successfully access videointensivestreaming lectures via wired computers.However, when an 802.11n wireless access point isinstalled and used with 25 wireless laptops to access thesame lectures, poor audio and video quality isexperienced. Which wireless solution would improve theperformance for the laptops?
- A.
Decrease the power of the wireless transmitter.
- B.
Add another access point.
- C.
Upgrade the access point to one that can route.
- D.
Adjust the wireless NICs in the laptops to operate at 10GHz to be compatible with 802.11n.
- 20.Which wireless network topology is being con鹃닻gured bya technician who is installing a keyboard, a mouse, andheadphones, each of which uses Bluetooth?
- A.
Ad hoc mode
- B.
Hotspot
- C.
Infrastructure mode
- D.
Mixed mode
- 21.What are the two methods that are used by a wirelessNIC to discover an AP? (Choose two.)
- A.
Sending an ARP request
- B.
Delivering a broadcast frame
- C.
Transmitting a probe request
- D.
Initiating a three-way handshake
- E.
Receiving a broadcast beacon frame
- 22.At a local college, students are allowed to connect tothe wireless network without using a password. Whichmode is the access point using?
- A.
Network
- B.
Open
- C.
Passive
- D.
Shared-key
- 23.Which wireless encryption method is the most secure?
- A.
WPA
- B.
WEP
- C.
WPA2 with TKIP
- D.
WPA2 with AES
- 24.Users on an IEEE 801.11n network are complaining ofslow speeds. The network administrator checks the APand verfies it is operating properly. What can be doneto improve the wireless performance in the network?
- A.
Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band.
- B.
Change the authentication method on the AP.
- C.
Switch to an 802.11g AP.
- D.
Set the AP to mixed mode.
- 25.A network engineer is implementing security on allcompany routers. Which two commands must be issuedto force authentication via the password 1C34dE for allOSPF-enabled interfaces in the backbone area of thecompany network? (Choose two.)
- A.
Ip ospf message-digest-key 1 md5 1C34dE
- B.
Area 1 authentication message-digest
- C.
Username OSPF password 1C34dE
- D.
Enable password 1C34dE
- E.
Area 0 authentication message-digest
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