Free pass4sure ccna wireless 640-721 exam Download

Exam Number: 640-721
Duration: 90 minutes (65 questions)
Exam Description Introduction
The 640-721 IUWNE Implementing Cisco Unified Wireless Network Essential exam is the exam associated with the CCNA Wireless certification. This exam tests a candidate’s knowledge of installing, configuring, operating, and troubleshooting small to medium-size WLANs. Candidates can prepare for this exam by taking the IUWNE Implementing Cisco Unified Wireless Network Essential course.
Exam Topics
The following information provides general guidelines for the content likely to be included on the Implementing Cisco Unified Wireless Networking Essentials exam. However, other related topics may also appear on any specific delivery of the exam.
Describe WLAN fundamentals
Describe basics of spread spectrum technology (modulation, DSS, OFDM, MIMO, Channels reuse and overlap, Rate-shifting, CSMA/CA)
Describe the impact of various wireless technologies (Bluetooth, WiMAX, ZigBee, cordless phone)
Describe wireless regulatory bodies, standards and certifications (FCC, ETSI, 802.73a/b/g/n, WiFi Alliance)
Describe WLAN RF principles (antenna types, RF gain/loss, EIRP, refraction, reflection, ETC)
Describe networking technologies used in wireless (SSID –> WLAN_ID –> Interface — >VLAN, 802.1q trunking)
Describe wireless topologies (IBSS, BSS, ESS, Point-to-Point, Point-to-Multipoint, basic Mesh, bridging)
Describe 802.73 authentication and encryption methods (Open, Shared, 802.1X, EAP, TKIP, AES)
Describe frame types (associated/unassociated, management, control, data)
Install a basic Cisco wireless LAN
Describe the basics of the Cisco Unified Wireless Network architecture (Split MAC, LWAPP, stand-alone AP versus controller-based AP, specific hardware examples)
Describe the Cisco Mobility Express Wireless architecture (Smart Business Communication System — SBCS, Cisco Config Agent — CCA, 526WLC, 521AP – stand-alone and controller-based)
Describe the modes of controller-based AP deployment (local, monitor, HREAP, sniffer, rogue detector, bridge)
Describe controller-based AP discovery and association (OTAP, DHCP, DNS, Master-Controller, Primary-Secondary-Tertiary, n+1 redundancy)
Describe roaming (Layer 2 and Layer 3, intra-controller and inter-controller, mobility groups)
Configure a WLAN controller and access points WLC: ports, interfaces, WLANs, NTP, CLI and Web UI, CLI wizard, LAG AP: Channel, Power
Configure the basics of a stand-alone access point (no lab) (Express setup, basic security)
Describe RRM
Install Wireless Clients
Describe client OS WLAN configuration (Windows, Apple, and Linux.)
Install Cisco ADU
Describe basic CSSC
Describe CCX versions 1 through 5
Implement basic WLAN Security
Describe the general framework of wireless security and security components (authentication, encryption, MFP, IPS)
Describe and configure authentication methods (Guest, PSK, 802.1X, WPA/WPA2 with EAP- TLS, EAP-FAST, PEAP, LEAP)
Describe and configure encryption methods (WPA/WPA2 with TKIP, AES)
Describe and configure the different sources of authentication (PSK, EAP-local or -external, Radius)
Operate basic WCS
Describe key features of WCS and Navigator (versions and licensing)
Install/upgrade WCS and configure basic administration parameters (ports, O/S version, strong passwords, service vs. application)
Configure controllers and APs (using the Configuration tab not templates)
Configure and use maps in the WCS (add campus, building, floor, maps, position AP)
Use the WCS monitor tab and alarm summary to verify the WLAN operations
Conduct basic WLAN Maintenance and Troubleshooting
Identify basic WLAN troubleshooting methods for controllers, access points, and clients methodologies
Describe basic RF deployment considerations related to site survey design of data or VoWLAN applications, Common RF interference sources such as devices, building material, AP location Basic RF site survey design related to channel reuse, signal strength, cell overlap
Describe the use of WLC show, debug and logging
Describe the use of the WCS client troubleshooting tool
Transfer WLC config and O/S using maintenance tools and commands
Describe and differentiate WLC WLAN management access methods (console port, CLI, telnet, ssh, http, https, wired versus wireless management)

QUESTION 1:
Both switches and hubs are being utilized within the PassGuide network. Which of
the following is true regarding the use of switches and hubs for network connectivity
in this network?
A. Switches take less time to process frames than hubs take
B. Hubs can filter frames
C. Switches do not forward broadcasts
D. Switches increase the number of collision domains in the network
E. Using hubs can increase the amount of bandwidth available to hosts
F. None of the above
Answer: D
Explanation:
The biggest benefit of using switches instead of hubs in your internetwork is that each
switch port is actually its own collision domain. (Conversely, a hub creates one large
collision domain.) But even armed with a switch, you still can’t break up broadcast
domains. Neither switches nor bridges will do that. They’ll typically simply forward all
broadcasts instead. Switch creates the collision domain per port, so we can say switch
increase the number of collision domains.
QUESTION 2:
Which one of the following characteristics is true regarding the use of hubs and
switches?
A. Hubs can have their ports be configured with VLANs
B. Using hubs is costly with regard to bandwidth availability.
C. Switches can not forward broadcasts.
D. Switches are more efficient than hubs in processing frames.
E. Switches increase the number of collision domains in the network.
Answer: E
Explanation: Switches increases the number of collisions domains in the network.
Switches that are configured with VLANs will reduce the size of the collision
domains by increasing the number of collision domains in a network, but making
them smaller than that of one big, flat network.
Incorrect Answers:

www.actualtest.org – The Power of Knowing
A. Switches are capable of VLAN configurations, but hubs are not.
B. Hubs are generally the least costly method possible to connect multiple devices
together in a network.
C. Switches forward broadcasts and multicasts, by default, to all ports within the same
VLAN. Only routers block all broadcast traffic by default.
D. Switches and hubs can be equally efficient in processing frames, in theory. In practice,
switches are generally more efficient as they usually have more CPU and memory
allocated to them, and are generally much more expensive than a simple hub.
QUESTION 3:
When comparing and contrasting the similarities and differences between bridges
and switches, which of the following are valid statements? Choose all the valid
answer choices)
A. Bridges are faster than switches because they have fewer ports.
B. A switch is a multiport bridge,
C. Bridges and switches learn MAC addresses by examining the source MAC address of
each frame received.
D. A bridge will forward a broadcast but a switch will not.
E. Bridges and switches increase the size of a collision domain.
F. None of the above statements are true.
Answer: B, C
Explanation:
Both bridges and switches build the bridge table by listening to incoming frames and
examining the source MAC address in the frame.
Switches are multiport bridges that allow you to create multiple broadcast domains. Each
broadcast domain is like a distinct virtual bridge within a switch.
Incorrect Answers:
A. Switches are generally faster than bridges. Bridges also do not necessarily have fewer
ports than switches.
D. Both bridges and switches will forward broadcast and multicast traffic, assuming that
the traffic remains in the same VLAN.
E. The use of VLANs in a switch can decrease the size of the collision domain, by
creating additional, smaller collision domains.
QUESTION 4:

www.actualtest.org – The Power of Knowing
Which of the following correctly describe the various functions and virtues of a
router? (Select all valid answer choices)
A. Packet switching
B. Collision prevention on a LAN segment.
C. Packet filtering
D. Broadcast domain enlargement
E. Broadcast forwarding
F. Internetwork communication
G. None of the above
Answer: A, C, F
Explanation:
The main function of a router is to connect different, separated networks together. In
doing so, switching packets from one network to another is a primary function, along
with providing for communication between networks. As an additional feature, routers
are capable of providing filtering on a network address and application port level, so
choice C is also correct.
Incorrect Answers:
B. Routers can indeed be used to segment a network separate a collision domain, since
routers do not forward LAN broadcasts and multicasts to other interfaces. However,
routers alone can not prevent all collisions from occurring on any given LAN segment.
D. Routers actually segment LANs into smaller broadcast domains.
E. Routers do not forward broadcast and multicast traffic out the additional interfaces by
default. Unless bridging or IP helpers are configured on the router, LAN broadcasts are
blocked at the router level.
QUESTION 5:
The LAN needs are expanding at the PassGuide corporate office, which is quickly
growing. You are instructed to enlarge the area covered by a single LAN segment on
the PassGuide network.
Which of the following are layer 1 devices that you can use? (Choose all that apply.)
A. A switch
B. A router
C. A network adapter card
D. A hub
E. A repeater
Answer: D, E