Exam Number: 640-721
Duration: 90 minutes (65 questions)
Exam Description
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, 802.11a/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 802.11 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)

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QUESTION 9:
The Certkiller network administrator needs to determine what LAN devices to
install on the Certkiller network. What are two advantages of using Layer 2
Ethernet switches over hubs? (Choose two)
A. Allowing simultaneous frame transmissions
B. Increasing the size of broadcast domains
C. Increasing the maximum length of UTP cabling between devices
D. Filtering frames based on MAC addresses
E. Decreasing the number of collision domains
Answer: A, D
Explanation:
A: A half duplex connection is where only one device can send or receive at a time. A
full duplex connection is where both devices can send and receive at the same time.
Thus, if you have a 100Mb half-duplex connection, only sending at 100Mb OR receiving
at 100Mb can happen at the same time. If you have a 100Mb full duplex connection, you
can effectively get 200Mb out of the link because you could be sending 100Mb and
receiving 100Mb at the same time.
D: Switches are capable of filtering frames based on any Layer 2 fields. For example, a
switch can be programmed to reject (not forward) all frames sourced from a particular
network. Because link layer information often includes a reference to an upper-layer
protocol, switches usually can filter on this parameter. Furthermore, filters can be helpful
in dealing with unnecessary broadcast and multicast packets.
QUESTION 10:
CDP is being used throughout the Certkiller network. What are two reasons why the
Certkiller network administrator would use CDP? (Choose two)
A. To determine the status of network services on a remote device
B. To obtain the IP Address of a connected device in order to telnet to the device
C. To verify the type of cable interconnecting two devices
D. To verify Layer 2 connectivity between two devices when Layer 3 fails
E. To obtain VLAN information from directly connected switches
F. To determine the status of the routing protocols between directly connected routers
G. To support automatic network failover during outages
Answer: B, D
Explanation:
Cisco Discovery Protocol (CDP) is a proprietary protocol designed by Cisco to help
administrators collect information about both locally attached and remote devices. By
using CDP, you can gather hardware and protocol information about neighbor devices,
which is useful info for troubleshooting and documenting the network.
You can use:
Show cdp neighbor
Show cdp neighbor details
Commands to gather the information of connected neighbors.
QUESTION 11:
CDP is running between two Certkiller devices. What information is supplied by
CDP? (Select three)
A. Device Identifiers
B. Capabilities list
C. Platform
D. Route identifier
E. Neighbor traffic data
Answer: A, B, C

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