Which organization certifies vendors for adherence to the 802.11 standards to improve interoperability of 802.11 products?
- FCC
- IEEE
- ITU-R
- Wi-Fi Alliance
Which two roles are typically performed by a wireless router that is used in a home or small business? (Choose two.)
- repeater
- access point
- WLAN controller
- Ethernet switch
- RADIUS authentication server
What type of wireless antenna is best suited for providing coverage in large open spaces, such as hallways or large conference rooms?
- omnidirectional
- directional
- Yagi
- dish
Which feature of 802.11n wireless access points allows them to transmit data at faster speeds than previous versions of 802.11 Wi-Fi standards did?
- SPS
- WPS
- MIMO
- MITM
What is a difference between Cisco APs that operate in a home environment and Cisco APs that operate in a corporate environment?
- Autonomous APs are used only in the home environment, and they incorporate the functions of a router, switch, and AP into one device.
- Controller-based APs are used in the corporate environment, and they are server-dependent devices that require an initial configuration to operate.
- Cisco corporate APs do not support PoE.
- Some corporate AP models can operate in either autonomous mode or controller-based mode.
Which type of wireless topology is created when two or more Basic Service Sets are interconnected by Ethernet?
- IBISS
- BSS
- WiFi Direct
- ESS
- ad hoc WLAN
Which type of management frame may regularly be broadcast by an AP?
- beacon
- probe request
- authentication
- probe response
Which statement defines the control frame operation between two stations?
- A station sends an RTS frame as the first step in a three-way handshake that is required before sending data frames.
- A station responds to an RTS frame with an ACK frame, thus providing permission for the requesting station to send a data frame.
- If the sending station does not receive an ACK frame within a predetermined period of time, the sending station will drop the connection.
- After receiving a data frame, the receiving station will send an ACK frame to the sending station if no errors are found.
A student uses a laptop to upload an assignment to a file server. Which wireless frame type did the laptop send to locate and associate with the campus access point?
- beacon frame
- control frame
- data frame
- management frame
A student uses a laptop to upload an assignment to a file server. Which wireless frame type did the laptop send to locate and associate with the campus access point?
- beacon frame
- control frame
- data frame
- management frame
During which stage of establishing connectivity between a WLAN client and an AP does the client learn the MAC address of the AP?
- discovery
- probing
- association
- encryption
- authentication
For which discovery mode will an AP generate the most traffic on a WLAN?
- passive mode
- open mode
- mixed mode
- active mode
What is an advantage of SSID cloaking?
- It provides free Internet access in public locations where knowing the SSID is of no concern.
- Clients will have to manually identify the SSID to connect to the network.
- SSIDs are very difficult to discover because APs do not broadcast them.
- It is the best way to secure a wireless network.
If three 802.11b access points need to be deployed in close proximity, which three frequency channels should be used? (Choose three.)
- 1
- 3
- 5
- 6
- 8
- 11
Which three Wi-Fi standards operate in the 2.4GHz range of frequencies? (Choose three.)
- 802.11a
- 802.11b
- 802.11g
- 802.11n
- 802.11ac
Which security mode is the least secure choice when a home wireless router is configured?
- WPA
- WPA2
- WEP
- WPA2-Personal
A administrator wishes to extend the range of the existing IEEE 802.11n network without changing the AP. What can the administrator do to accomplish this?
- Upgrade the firmware on the AP.
- Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band.
- Deploy a Wi-Fi Range Extender.
- Change to WPA2 authentication.
A company has recently implemented an 802.11n wireless network. Some users are complaining that the wireless network is too slow. Which solution is the best method to enhance the performance of the wireless network?
- Replace the wireless NICs on the computers that are experiencing slow connections.
- Split the traffic between the 2.4 GHz and 5 GHz frequency bands.
- Disable DHCP on the access point and assign static addresses to the wireless clients.
- Upgrade the firmware on the wireless access point.
An employee connects wirelessly to the company network using a cell phone. The employee then configures the cell phone to act as a wireless access point that will allow new employees to connect to the company network. Which type of security threat best describes this situation?
- cracking
- denial of service
- rogue access point
- spoofing
Fill in the blank. Do not use abbreviations.
Ad hoc wireless topologies sometimes can use a feature called tethering to enable a smartphone to create a personal hotspot.
Match the type of attack to its description. (Not all options are used.)
CCNA 3 Chapter 4 Exam Answer 001Place the following actions in the order in which they occur in a shared key authentication process. (Not all options are used.)
CCNA 3 Chapter 4 Exam Answer 002Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
What is the SSID of the connected network and which message is displayed in the browser window?
- SSID: Home-Net
Message:Congratulations! You were able to connect it! - SSID: Home-Network
Message: Good job! - SSID: Home-Network
Message: Well done! - SSID: Home-Net
Message:Congratulations! You did it!
- SSID: Home-Net
Cisco - CCNA 3 - Chapter 4 version 5.2 Exam Answers
Cisco - CCNA 3 - Chapter 3 version 5.2 Exam Answers
Refer to the exhibit. Which switching technology would allow each access layer switch link to be aggregated to provide more bandwidth between each Layer 2 switch and the Layer 3 switch?
CCNA 3 Chapter 3 Exam Answer 001- HSRP
- PortFast
- trunking
- EtherChannel
What is the most cost-effective method of solving interface congestion that is caused by a high level of traffic between two switches?
- increase uplink speed
- add more VLANs to reduce broadcast domains
- aggregate ports by using EtherChannel
- insert a router between the switches
Which two load balancing methods can be implemented with EtherChannel technology? (Choose two.)
- destination MAC to destination IP
- destination IP to destination MAC
- source MAC to destination MAC
- source IP to destination IP
- destination MAC to source MAC
- destination IP to source IP
Which statement describes an EtherChannel implementation?
- EtherChannel operates only at Layer 2.
- PAgP cannot be used in conjunction with EtherChannel.
- A trunked port can be part of an EtherChannel bundle.
- EtherChannel can support up to a maximum of ten separate links.
What is an advantage of using LACP?
- increases redundancy to Layer 3 devices
- decreases the chance of a spanning-tree loop
- allows automatic formation of EtherChannel links
- provides a simulated environment for testing link aggregation
- decreases the amount of configuration that is needed on a switch for EtherChannel
Which statement is true regarding the use of PAgP to create EtherChannels?
- It requires full duplex.
- It is Cisco proprietary.
- It requires more physical links than LACP does.
- It increases the number of ports that are participating in spanning tree.
- It mandates that an even number of ports (2, 4, 6, etc.) be used for aggregation.
Which two protocols are link aggregation protocols? (Choose two.)
- 802.3ad
- PAgP
- STP
- EtherChannel
- RSTP
Which PAgP mode combination will establish an EtherChannel?
- switch 1 set to on; switch 2 set to desirable.
- switch 1 set to desirable; switch 2 set to desirable.
- switch 1 set to auto; switch 2 set to auto.
- switch 1 set to auto; switch 2 set to on.
Refer to the exhibit. The administrator tried to create an EtherChannel between S1 and the other two switches via the commands that are shown, but was unsuccessful. What is the problem?
CCNA 3 Chapter 3 Exam Answer 002- Traffic can only be sent to two different switches if EtherChannel is implemented on Gigabit Ethernet interfaces.
- Traffic can only be sent to two different switches if EtherChannel is implemented on Layer 3 switches.
- Traffic cannot be sent to two different switches through the same EtherChannel link.
- Traffic cannot be sent to two different switches, but only to two different devices like an EtherChannel-enabled server and a switch.
When a range of ports is being configured for EtherChannel, which mode will configure LACP so that it initiates the EtherChannel negotiation?
- active
- auto
- desirable
- passive
When a range of ports is being configured for EtherChannel by the use of PAgP, which mode will form the bundled channel only if the port receives PAgP packets from another device?
- active
- auto
- desirable
- passive
As the network administrator you have been asked to implement EtherChannel on the corporate network. What does this configuration consist of?
- providing redundant links that dynamically block or forward traffic
- grouping multiple physical ports to increase bandwidth between two switches
- grouping two devices to share a virtual IP address
- providing redundant devices to allow traffic to flow in the event of device failure
Refer to the exhibit. An EtherChannel was configured between switches S1 and S2, but the interfaces do not form an EtherChannel. What is the problem?
CCNA 3 Chapter 3 Exam Answer 003- The interface port-channel number has to be different on each switch.
- The switch ports were not configured with speed and duplex mode.
- The switch ports have to be configured as access ports with each port having a VLAN assigned.
- The EtherChannel was not configured with the same allowed range of VLANs on each interface.
Which command will initiate EtherChannel interface configuration mode?
- channel-group group-identifier
- interface port-channel interface-identifier
- interface interface-identifier
- interface range interface-identifier
What is a best practice to use before beginning an EtherChannel implementation?
- Assign affected interfaces to VLAN 1.
- Assign affected interfaces to the management VLAN.
- Shut down each of the affected interfaces.
- Enable each of the affected interfaces.
- Assign affected interfaces to an unused VLAN.
Which three options must match in order to establish an EtherChannel between two directly connected switches? (Choose three.)
- port numbers that are used for the EtherChannel
- VLAN memberships of the interfaces that are used for EtherChannel
- domain names on the switches
- speed of the interfaces that are used for EtherChannel
- duplex settings of the interfaces that are used for EtherChannel
- port security settings on the interfaces that used for EtherChannel
An EtherChannel link using LACP was formed between two switches, S1 and S2. While verifying the configuration, which mode combination could be utilized on both switches?
- S1-on and S2-passive
- S1-passive and S2-passive
- S1-on and S2-active
- S1-passive and S2-active
Refer to the exhibit. A network administrator has decided that an EtherChannel between ports 0/1 and 0/2 on switches S1 and S2 would help performance. After making the configuration, the administrator notices no performance gain. Based on the output that is shown, what two possible assumptions could a network administrator make? (Choose two.)
CCNA 3 Chapter 3 Exam Answer 004- The EtherChannel bundle is working.
- The EtherChannel bundle is not working.
- One of the ports on S2 was not configured correctly.
- Switch S2 did not use a compatible EtherChannel mode.
- LACP and PAgP were both used to form the EtherChannel.
- Switch S2 must be configured so that the maximum number of port channels is increased.
Match the description to the correct command. (Not all options are used.)
CCNA 3 Chapter 3 Exam Answer 005Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
What are two reasons why the ping messages that are issued from Laptop0 towards Laptop1 are failing? (Choose two.)
- The channel group mode is not set correctly on the switches.
- The wrong cable types are connecting the two switches.
- The interface VLAN 1 is shut down on both switches.
- The channel group should be configured as a trunk on each switch.
- The two interfaces on each of the switches belong to different VLANs.
