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Exam Code

642-813

Exam Name

Implementing Cisco IP Switched Networks (SWITCH)

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Sample Questions and Answers

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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Question: 1 Under which three conditions does a client initiate roaming between wireless cells in the Company WLAN? (Select three) A. The access point has broadcast too many SSIDs. B. The wireless client has missed too many beacons from the access point. C. The maximum data retry count, initiated by the wireless client, is exceeded. D. The wireless client has reduced the data rate. E. The access point has requested client re authentication. F. The wireless client has missed too many IAPP (Inter Access Point Protocol) updates. Answer: B, C, D Question: 2 Which three statements are true about implementing wireless LANs in the Company network using Cisco devices? (Select three) A. Antenna power is a relative value reference to dBi. B. LWAPP allows encrypted communications between lightweight access points and WLAN controllers. C. Characteristics of antennas are directionality, gain, and polarization. D. Power over Ethernet (PoE) is only available when a WLAN controller is integrated into the network. E. The WLAN solution Engine (WLSE) is used to control lightweight access points. F. One of the advantages of the lightweight WLAN solution is that the devices act in depently. Answer: A, B, C Question: 3 Study the exhibit shown below carefully. A Cisco Aironet Wireless LAN Client Adapter has been installed and configured through the ADU on the PC. The Aironet System Tray Utility (ASTU) has been enabled during the installation and the icon appears in the system tray area in the lower right of the desktop as shown: What is the significance of this icon?

A. It indicates that the client adapter is not associated to an access point or another client. B. It indicates that the radio of the client adapter is disabled. C. It indicates that the client adapter is associated to an access point or another client, but the

user is not EAP authenticated. D. It indicates that the client adapter is associated to an access point or another client, that the

user is authenticated if the client adapter is configured for EAP authentication, and that the signal strength is poor.

E. It indicates that the client adapter is associated to an access point or another client, that the user is authenticated if the client adapter is configured for EAP authentication, and that the

signal strength is fair. F. It indicates that the client adapter is associated to an access point or another client, that the user is authenticated if the client adapter is configured for EAP authentication, and that the

signal strength is excellent or good. Answer: D

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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Question: 4 LDAP is being utilized throughout the Company Wireless network. Which issue or set of issues does the Lightweight Access Point Protocol (LWAPP) address? A. Reduction of processing in wireless controllers B. Distributed approach to authentication, encryption, and policy enforcement C. Access point discovery, information exchange, and configuration D. Provides security by blocking communication between access points and wireless clients E. None of the other alternatives apply. Answer: C Question: 5 The LWAPP (Lightweight Access Point Protocol) is in use within the Company wireless LAN. Which statement is true about this protocol? A. Real-time frame exchange is accomplished within the access point. B. The control traffic between the client and the access point is encapsulated with the LWAPP. C. Authentication, security, and mobility are handled by the access point. D. Data traffic between the client and the access point is encapsulated with LWAPP. E. None of the other alternatives apply Answer: A Question: 6 You work as a network technician at Company.com. Your boss, Mrs. Tess King, is interested in the Cisco Compatible Extensions program. What are three features of this program? A. Accounting B. Analog and digital voice C. Mobility D. Security E. Routing and switching F. VLAN and QoS Answer: C, D, F Question: 7 You work as a network technician at Company.com. Your boss, Mrs. Tess King, is interested in LWAPP (Lightweight Access Point Protocol). What should you tell her regarding this technology? (Select 2) A. LWAPP is a proprietary protocol, and because of its very high overhead it is not widely

adopted. B. Control traffic is encapsulated in UDP packets with a source port of 1024 and a destination

port of 12223. C. Layer 3 LWAPP is a UDP/IP Frame that requires a Cisco Aironet AP to obtain an IP Address using DHCP. D. Data traffic is encapsulated in UDP packets with a source port of 1024 and a destination port

of 12223. E. Control traffic is encapsulated in TCP packets with a source port of 1024 and a destination port

of 12223. F. Data traffic is encapsulated in TCP packets with a source port of 1024 and a destination port of 12223.

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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Answer: B, C Question: 8 You work as a network technician at Company.com. Your boss, Ms. Tess King, is interested LWAPP (Lightweight Access Point Protocol). In particular she wants to know which type of activities this protocol defines. What should you tell her? Select two. A. Layer 3 addressing and distribution B. SNMP monitoring services C. Access point certification and software control D. Packet encapsulation, fragmentation, and formatting E. Compression and Layer 3 address mapping F. User behaviors Answer: C, D Question: 9 DRAG DROP This is a drag and drop question which is about the correct sequence of steps that a wireless client takes during the process of association with an access point (AP). Drag the items to the proper locations.

Answer:

Question: 10 Refer to the exhibit.

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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What type of message will be used by the lightweight access point (LAP) in an attempt to locate the wireless LAN controller (WLC)?

A. The LAP will send out a DNS request. In return, the DNS server will provide theWLC domain name. B. The LAP will send out a Layer 3 LWAPP discovery request to the WLC on the wireless

network. C. The LAP will send out a DHCP request. In return, the DHCP server will provide the IP addresses for the LAP and the WLC. D. The LAP will send out a Layer 2 LWAPP discovery request to the WLC on the wireless

network. Answer: B Question: 11 A new lightweight access point (LAP) has been installed in the Company WLAN. Which two statements correctly describe the association process between this LAP and a WLAN controller? (Choose 2) A. An access point will search for a controller using a broadcast address if using LWAPP Layer 2 and a unicast address if using LWAPP Layer 3 mode. B. If multiple wireless controllers are detected by an access point, the controller with the fewest associated access points is chosen to associate with. C. In order to associate in Layer 3 mode, the access point must have been preconfigured with an IP address. D. Once an access point associates with a controller in LWAPP Layer 3 mode, it receives an IP address from the controller. E. An access point first searches for a controller in LWAPP Layer 2 mode. If the search is not successful, the access point then attempts to locate a controller in LWAPP Layer 3 mode. F. If multiple wireless controllers are detected by an access point, all of them will be used and

traffic will be load balanced. Answer: B, E

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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Question: 12 What are three functions of the Cisco wireless LAN controller, which is being used in the Company Centralized WLAN solution network? (Select three) A. Authentication B. Mobility C. Security management D. Transmission of beacon frames E. Real-time portions of MAC management F. Real-time aspects of the 802.11 prtocol management G. SNMP collection Answer: A, B, C Question: 13 DRAG DROP You work as a network administrator at Company.com. Your boss, Miss Tess King, is asking you about lightweight access points WLAN controller associations. What is the proper sequence a lightweight access point associates with a WLAN controller?

Answer:

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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Question: 14 Access Point R1 is an Aironet 1200 that has been converted from autonomous mode to LWAPP mode. After this conversion, which two statements are true? (Select two) A. LWAPP-enabled access points can still communicate with Wireless Domain Services (WDS) devices. B. An LWAPP-enabled access point console port provides read-only access to the unit. C. LWAPP-enabled access points support Layer 2 LWAPP. D. LWAPP-enabled access points must get an IP address and discover the controller using DHCP, DNS, or an IP subnet broadcast. E. An LWAPP-enabled access point console port provides read-write access to the unit. Answer: B, D Question: 15 Which statement is true about the data traffic between the access point named TKAP1 and controller TKC1? A. The data traffic between the access point and controller is not encrypted. B. The data traffic is encapsulated with LWAPP. C. The data traffic is switched at the access point before being sent to the WLAN controller where VLAN tagging and QoS are applied. D. The data traffic is encrypted with AES. E. All of the above Answer: B Question: 16 Which set of statements describes the correct order and process of a Company wireless user client associating with a wireless access point in the Company network?

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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A. 1. Access point sends probe request .2. Client sends probe response.3. Client initiates association.4. Access point accepts association.5. Client adds access point MAC address

To association table. B. 1. Client sends probe request.2. Access point sends probe response.3. Client initiates

association.4. Access point accepts association.5. Access point adds client MAC address To association table. C. 1. Client sends probe request.2. Access point sends probe response.3. Access point initiates association.4. Client accepts association.5. Access point adds client MAC address to

association table. D. 1. Access point sends probe request .2. Client sends probe response.3. Client initiates

association.4. Access point accepts association.5. Access point adds client MAC address To association table. E. 1. Client sends probe request.2. Access point sends probe response.3. Client initiates

association.4. Access point accepts association.5. Client adds access point MAC address To association table. F. None of the other alternatives apply. Answer: B Question: 17 Which statement about the Lightweight Access Point Protocol (LWAPP) is true? A. LWAPP encrypts both control traffic and user data. B. LWAPP encrypts user traffic with an x.509 certificate using AES-CCMP. C. When set to Layer 3, LWAPP uses a proprietary protocol to communicate with the Cisco Aironet APs. D. LWAPP encrypts control traffic between the AP and the controller. E. None of the other alternatives apply. Answer: D Question: 18 The Lightweight Access Point Protocol (LWAPP) is in use within the Company wireless network. Which two statements correctly describe features of this protocol? (Choose two) A. Control traffic between an access point and a controller is encrypted within LWAPP. B. Data traffic between an access point and a controller is encrypted within LWAPP. C. Layer 3 mode packets are transmitted in TCP frames. D. Data traffic between an access point and a controller is encapsulated within LWAPP. E. VLAN tagging and QoS markings are applied at the access point. Answer: A, D Question: 19 To save on intra-office call costs, the Company network has implemented VOIP at all their locations. Which statement is true about IP telephony calls? A. The voice carrier stream uses H.323 to set up, maintain, and tear down call endpoints. B. A Voice over IP (VoIP) packet consists of the voice payload, IP header, TCP header, RTP header, and Layer 2 link header. C. Call control signaling uses Real-Time Transport Protocol (RTP) packets that contain actual voice samples. D. The sum of bandwidth necessary for each major application, including voice, video, and data, should not exceed 75 percent of the total available bandwidth for each link. E. None of the other alternatives apply

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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Answer: D Question: 20 You need to troubleshoot some problems in the Company VOIP network associated with jitter. What is the cause of jitter? A. Packet drops B. Transmitting too many small packets C. Variable queue delays D. Compression E. None of the other alternatives apply Answer: C Question: 21 Refer to the exhibit. Which statement is true about the voice traffic coming to the switch access port that is connected to the IP phone?

A. A PC connected to a switch port via an IP phone must support a trunking encapsulation. B. The traffic on the voice VLAN must be tagged with 802.1p encapsulation in order to coexist on the same LAN segment with a PC. C. A PC connected to a switch port via an IP phone is unaware of the presence of the phone. D. To improve the quality of the voice traffic, no other devices should be attached to the IP phone. E. The voice VLAN must be configured as a native VLAN on the switch. Answer: C Question: 22 VOIP has been implemented at the main office of the Company network. Which two statements are true about voice packets in a LAN? (Select two) A. Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media portion of the VoIP communication. B. Voice traffic data flow involves large volumes of large packets. C. Because a packet loss involves a small amount of data, voice traffic is less affected by packet losses than traditional data traffic is. D. Voice packets are encapsulated in TCP segments to allow for proper sequencing during delivery. E. Voice packets are very sensitive to delay and jitter. Answer: A, E Question: 23 Which QoS mechanisms can you use on a converged network to improve VoIP quality? (Select three)

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A. The use of a queuing method that will give VoIP traffic strict priority over other traffic. B. The use of RTP header compression for the VoIP traffic. C. The proper classification and marking of the traffic as close to the source as possible. D. The use of 802.1QinQ trunking for VoIP traffic. E. The use of WRED. Answer: A, C, E Question: 24 Which three QoS mechanisms can be configured to improve VoIP quality on a converged network? Select three. A. The use of a queuing method that will give VoIP traffic strict priority over o the traffic B. The use of RTP header compression for the VoIP traffic. C. The proper classification and marking of the traffic as close to the source as possible D. The use of 802.1QinQ trunking for VoIP traffic E. The use of WRED for the VoIP traffic Answer: A, C, E Question: 25 Refer to the exhibit. What are three of the basic components of a VoIP network? (Choose three.)

A. software voice applications B. multipoint control unit (MCU) C. gatekeeper D. call agent E. interactive voice response (IVR) systems F. softphones Answer: B, C, D

Exam Name: Implementing Cisco IP Switched Networks (SWITCH)Exam Type: Cisco Exam Code: 642-813 Total Question 133

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Question: 26 In the Company VOIP network, which two statements are true? (Select two) A. Voice packets are typically around 600 bytes to 1200 bytes. B. For voice quality, packet loss should be less than 2 percent and delay should be no more than 250 ms. C. Voice packets are typically around 60 KB to 120 KB. D. For voice quality, packet loss should be less than 1 percent and delay should be no more than 150 ms. E. A typical voice call requires 17 kbps to 106 kbps of guaranteed priority bandwidth plus an additional 15 kbps per call for voice-control traffic. F. Voice packets are typically around 60 bytes to 120 bytes. G. Voice packets are typically around 6 bytes to 12 bytes. Answer: D, F Question: 27 You need to determine which type of call signaling you want to use in your new VOIP network. What are three examples of call control signaling that could be used? (Select three) A. RTP B. SIP C. G.729 D. H.323 E. G.711 F. MGCP Answer: B, D, F Question: 28 Which three are characteristics of voice traffic in the Company VOIP campus network? (Select three) A. TCP retransmits B. UDP priority C. Bursty D. Delay sensitive E. Greedy F. Drop sensitive Answer: B, D, F Question: 29 Company is migrating to VOIP. Which statement is true about utilizing a data network for Voice over IP traffic? A. Voice traffic will require some form of QoS mechanisms in most networks. B. Because voice traffic volume cannot be calculated, network bandwidth requirements must be determined from an existing installation. C. Adding bandwidth to the data network is the primary solution to provide for the needs of voice traffic. D. Network congestion must be totally eliminated to provide proper voice traffic performance. E. Voice traffic will require some form of QoS implementation only in congested networks. Answer: A