Cisco Certified Network Associate : 640-802 Exam

640-802 CCNA
Cisco Certified Network Associate Exam

Exam Number: 640-802 CCNA
Associated Certifications: CCNA
Duration: 90 Minutes (50-60 questions)
Available Languages: English
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Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 640-802 Cisco Certified Network Associate (CCNA) is the composite exam associated with the Cisco Certified Network Associate certification. Candidates can prepare for this exam by taking the Interconnecting Cisco Networking Devices Part 1 (ICND1) v1.0 and the Interconnecting Cisco Networking Devices Part 2 (ICND2) v1.0 courses. This exam tests a candidate’s knowledge and skills required to install, operate, and troubleshoot a small to medium size enterprise branch network. The topics include connecting to a WAN; implementing network security; network types; network media; routing and switching fundamentals; the TCP/IP and OSI models; IP addressing; WAN technologies; operating and configuring IOS devices; extending switched networks with VLANs; determining IP routes; managing IP traffic with access lists; establishing point-to-point connections; and establishing Frame Relay connections.

Exam Topics
The following topics are general guidelines for the content likely to be included on the Cisco Certified Network Associate exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

Describe how a network works
Describe the purpose and functions of various network devices
Select the components required to meet a network specification
Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network
Describe common networked applications including web applications
Describe the purpose and basic operation of the protocols in the OSI and TCP models
Describe the impact of applications (Voice Over IP and Video Over IP) on a network
Interpret network diagrams
Determine the path between two hosts across a network
Describe the components required for network and Internet communications
Identify and correct common network problems at layers 1, 2, 3 and 7 using a layered model approach
Differentiate between LAN/WAN operation and features

Configure, verify and troubleshoot a switch with VLANs and interswitch communications
Select the appropriate media, cables, ports, and connectors to connect switches to other network devices and hosts
Explain the technology and media access control method for Ethernet networks
Explain network segmentation and basic traffic management concepts
Explain basic switching concepts and the operation of Cisco switches
Perform and verify initial switch configuration tasks including remote access management
Verify network status and switch operation using basic utilities (including: ping, traceroute, telnet, SSH, arp, ipconfig), SHOW & DEBUG commands
Identify, prescribe, and resolve common switched network media issues, configuration issues, auto negotiation, and switch hardware failures
Describe enhanced switching technologies (including: VTP, RSTP, VLAN, PVSTP, 802.1q)
Describe how VLANs create logically separate networks and the need for routing between them
Configure, verify, and troubleshoot VLANs
Configure, verify, and troubleshoot trunking on Cisco switches
Configure, verify, and troubleshoot interVLAN routing
Configure, verify, and troubleshoot VTP
Configure, verify, and troubleshoot RSTP operation
Interpret the output of various show and debug commands to verify the operational status of a Cisco switched network.
Implement basic switch security (including: port security, trunk access, management vlan other than vlan1, etc.)

Implement an IP addressing scheme and IP Services to meet network requirements in a medium-size Enterprise branch office network.
Describe the operation and benefits of using private and public IP addressing
Explain the operation and benefits of using DHCP and DNS
Configure, verify and troubleshoot DHCP and DNS operation on a router.(including: CLI/SDM)
Implement static and dynamic addressing services for hosts in a LAN environment
Calculate and apply an addressing scheme including VLSM IP addressing design to a network
Determine the appropriate classless addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment
Describe the technological requirements for running IPv6 in conjunction with IPv4 (including: protocols, dual stack, tunneling, etc).
Describe IPv6 addresses
Identify and correct common problems associated with IP addressing and host configurations

Configure, verify, and troubleshoot basic router operation and routing on Cisco devices
Describe basic routing concepts (including: packet forwarding, router lookup process)
Describe the operation of Cisco routers (including: router bootup process, POST, router components)
Select the appropriate media, cables, ports, and connectors to connect routers to other network devices and hosts
Configure, verify, and troubleshoot RIPv2
Access and utilize the router to set basic parameters.(including: CLI/SDM)
Connect, configure, and verify operation status of a device interface
Verify device configuration and network connectivity using ping, traceroute, telnet, SSH or other utilities
Perform and verify routing configuration tasks for a static or default route given specific routing requirements
Manage IOS configuration files. (including: save, edit, upgrade, restore)
Manage Cisco IOS.
Compare and contrast methods of routing and routing protocols
Configure, verify, and troubleshoot OSPF
Configure, verify, and troubleshoot EIGRP
Verify network connectivity (including: using ping, traceroute, and telnet or SSH)
Troubleshoot routing issues
Verify router hardware and software operation using SHOW & DEBUG commands.
Implement basic router security

Explain and select the appropriate administrative tasks required for a WLAN
Describe standards associated with wireless media (including: IEEE WI-FI Alliance, ITU/FCC)
Identify and describe the purpose of the components in a small wireless network. (Including: SSID, BSS, ESS)
Identify the basic parameters to configure on a wireless network to ensure that devices connect to the correct access point
Compare and contrast wireless security features and capabilities of WPA security (including: open, WEP, WPA-1/2)
Identify common issues with implementing wireless networks. (Including: Interface, missconfiguration)

Identify security threats to a network and describe general methods to mitigate those threats
Describe today’s increasing network security threats and explain the need to implement a comprehensive security policy to mitigate the threats
Explain general methods to mitigate common security threats to network devices, hosts, and applications
Describe the functions of common security appliances and applications
Describe security recommended practices including initial steps to secure network devices

Implement, verify, and troubleshoot NAT and ACLs in a medium-size Enterprise branch office network.
Describe the purpose and types of ACLs
Configure and apply ACLs based on network filtering requirements.(including: CLI/SDM)
Configure and apply an ACLs to limit telnet and SSH access to the router using (including: SDM/CLI)
Verify and monitor ACLs in a network environment
Troubleshoot ACL issues
Explain the basic operation of NAT
Configure NAT for given network requirements using (including: CLI/SDM)
Troubleshoot NAT issues

Implement and verify WAN links
Describe different methods for connecting to a WAN
Configure and verify a basic WAN serial connection
Configure and verify Frame Relay on Cisco routers
Troubleshoot WAN implementation issues
Describe VPN technology (including: importance, benefits, role, impact, components)
Configure and verify a PPP connection between Cisco routers

Exam Number/Code: 640-802
Exam Name:Cisco Certified Network Associate

“Cisco Certified Network Associate”, also known as 640-802 exam, is a Cisco certification. With the complete collection of questions and answers, Passguides has assembled to take you through 394 Q&As to your 640-802 Exam preparation. In the 640-802 exam resources, you will cover every field and category in CCNA helping to ready you for your successful Cisco Certification.
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QUESTION 11:
CDP is running between two Certkiller devices. What information is supplied by
CDP? (Select three)
A. Device Identifiers
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B. Capabilities list
C. Platform
D. Route identifier
E. Neighbor traffic data
Answer: A, B, C
Explanation:
QUESTION 12:
Two Certkiller offices are connected as shown below:
Two buildings on the London campus of a the Certkiller corporation must be
connected to use Ethernet with a bandwidth of at least 100 Mbps. Certkiller is
concerned about possible problems from voltage potential differences between the
two buildings. Which media type should be used for the connection?
A. Coaxial cable
B. Fiber optic cable
C. UTP cable
D. STP cable
E. None of the above
Answer: B
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Explanation:
Current Ethernet technology typically comes via either copper UTP or fiber cables. In
this scenario the distance between the buildings is only 55 meters so either copper or
fiber could be used, as the distance limitation for 100M UTP Ethernet is 100 meters.
However, fiber would be a better fit as it is not prone to errors that could occur due to the
voltage potential differences. Because fiber is a dielectric material, it’s not susceptible to
electrical interference. FO-product vendors also claim that fiber systems make secure
communications easier. Interference immunity and lack of emissions are givens in FO
systems and in the fiber medium itself.
QUESTION 13:
Refer to the Certkiller network shown below:
You work as a network technician at Certkiller .com. Please study the exhibit
carefully. Based on the information shown above, what is needed to allow host
Certkiller 1 to ping host Certkiller 2?
A. a crossover cable connecting the switches
B. a backbone switch connecting the switches with either fiber optic or straight-through
cables
C. a straight-through cable connecting the switches
D. a CSU/DSU connected to the switches with straight-through cables
E. a router connected to the switches with straight-through cables
Answer: E
Explanation:
Routers are Layers 3 devices used for inter-network communication. In this scenario
there are two different networks, so both switches need to connect to a router using
straight-through cables.
A straight-through cable is used to connect two different devices like, switch to router,
host to switch. Since we need to insert a router for communication between the two
switches, straight through cables will be used between the switches and the router.
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QUESTION 14:
Exhibit:
A new Certkiller office is opening, and a network device needs to be installed in the
place of the icon labeled Network Device to accommodate a leased line T1 to the
Internet. Which network device and interface configuration meets the minimum
requirements for this installation?
A. A switch with two Ethernet interfaces
B. A router with two Ethernet interfaces
C. A switch with one Ethernet and one serial interface
D. A router with one Ethernet and one serial interface
E. A router with one Ethernet and one modem interface
F. None of the above
Answer: D
Explanation:
Only a router can terminate a leased line T1 access circuit, and only a router can connect
two different IP networks. Here, we will need a router with two interfaces, one serial
connection for the T1 and one Ethernet interface to connect to the switch on the LAN.
QUESTION 15:
As a CCNA candidate, you must know the various layers of the OSI model. At
which layers of the OSI Model do Wide Area Networks operate in? (Choose two)
A. Physical Layer
B. Datalink Layer
C. Network Layer
D. Session Layer
E. Transport Layer
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F. Presentation Layer
G. Application Layer
Answer: A, B
Explanation:
A WAN is a data communications network that covers a relatively broad geographic area
and that often uses transmission facilities provided by common carriers, such as
telephone companies. WAN technologies generally function at the lower two layers of
the OSI reference model: the physical layer and the data link layer as shown below.
Note: Occasionally WAN’s would also be considered to operate at layer 3, but since this
question asked for only 2 choices layers 1 and 2 are better choices.
QUESTION 16:
While troubleshooting a connectivity problem on the network, you issue the ping
command from your PC command prompt, but the output shows “request times
out.”
At which OSI layer is this problem associated with?
A. The data link layer
B. The application layer
C. The access layer
D. The session layer
E. The network layer
Answer: E
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Explanation:
TCP/IP includes ICMP, a protocol designed to help manage and control the operation of
a TCP/IP network. The ICMP protocol provides a wide variety of information about a
network’s health and operational status. Control message is the most descriptive part of a
name. ICMP helps control and manage IP’s work and therefore is considered part of
TCP/IP’s network layer.
Reference:
CCNA Self-Study CCNA ICND exam certification Guide (Cisco Press, ISBN
1-58720-083-X) page 277.
QUESTION 17:
You download a file from an FTP site on the Internet. What is the highest layer in the
OSI model used in this FTP operation?
A. Application
B. Presentation
C. Session
D. Transport
E. Internet
F. Data Link
G. Physical
Answer: A
Explanation:
Layer 7 is the application layer, which is the highest layer in the OSI model. This layer
describes the use of end user applications, such as opening movie files (avi, mpeg, etc)
used Microsoft Office applications, using WWW browsers, using Telnet, and using FTP.
QUESTION 18:
A host computer has been correctly configured with a static IP address, but the
default gateway is incorrectly set. Which layer of the OSI model will be first
affected by this configuration error?
A. Layer 1
B. Layer 2
C. Layer 3
D. Layer 4
E. Layer 5
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F. Layer 6
E. Layer 7
Answer: C
Explanation:
IP Addressing and IP routing resides on the OSI Network layer, which is layer 3.
QUESTION 19:
Which layer of the OSI reference model is responsible for ensuring reliable
end-to-end delivery of data?
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data-Link
Answer: D
Explanation:
A key function of the transport layer is to provide connection services for the protocols
and applications that run at the levels above it. These can be categorized as either
connection-oriented services or connectionless services. Some protocol suites, such as
TCP/IP, provide both a connection-oriented and a connectionless transport layer
protocol, to suit the needs of different applications.
The transport layer is also the place in the layer stack where functions are normally
included to add features to end-to-end data transport. Where network layer protocols are
normally concerned with just “best effort” communications, where delivery is not
guaranteed. Transport layer protocols are given intelligence in the form of algorithms that
ensure that reliable and efficient communication between devices takes place. This
encompasses several related jobs, including lost transmission detection and handling, and
managing the rate at which data is sent to ensure that the receiving device is not
overwhelmed.
Transmission quality, meaning ensuring that transmissions are received as sent, is so
important that some networking references define the transport layer on the basis of
reliability and flow-control functions. However, not all transport layer protocols provide
these services. Just as a protocol suite may have a connection-oriented and a
connectionless transport layer protocol, it may also have one that provides reliability and
data management services, and one that does not. Again, this is the case with TCP/IP:
there is one main transport layer protocol; TCP, that includes reliability and flow control
features, and a second, UDP, that doesn’t.
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QUESTION 20:
At which OSI layer is a logical path created between two host systems named CK1
and CK2 on the Certkiller LAN?
A. Physical
B. Session
C. Data link
D. Transport
E. Network
F. Application
G. Presentation
Answer: E

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