Interconnecting Cisco Networking Devices Part 1 : 640-822 Exam

640-822 ICND1
Interconnecting Cisco Networking Devices Part 1

Exam Number: 640-822 ICND1
Associated Certifications: CCENT and 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 640-822 Interconnecting Cisco Networking Devices Part 1 (ICND1) is the exam associated with the Cisco Certified Entry Network Technician certification and a tangible first step in achieving the Cisco Certified Network Associate certification. Candidates can prepare for this exam by taking the Interconnecting Cisco Networking Devices Part 1 (ICND1) v1.0 course. This exam tests a candidate’s knowledge and skills required to successfully install, operate, and troubleshoot a small branch office network. The exam includes topics on networking fundamentals; connecting to a WAN; basic security and wireless concepts; routing and switching fundamentals; the TCP/IP and OSI models; IP addressing; WAN technologies; operating and configuring IOS devices; configuring RIPv2, static and default routing; implementing NAT and DHCP; and configuring simple networks.

Exam Topics
The following topics are general guidelines for the content likely to be included on the Interconnecting Cisco Networking Devices Part 1 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 the operation of data networks.
Describe the purpose and functions of various network devices
Select the components required to meet a given network specification
Use the OSI and TCP/IP models and their associated protocols to explain how data flows in a network
Describe common networking 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

Implement a small switched network
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 technologies
Explain network segmentation and basic traffic management concepts
Explain the operation of Cisco switches and basic switching concepts
Perform, save 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
Implement and verify basic security for a switch (port security, deactivate ports)
Identify, prescribe, and resolve common switched network media issues, configuration issues, autonegotiation, and switch hardware failures

Implement an IP addressing scheme and IP services to meet network requirements for a small branch office

Describe the need and role of addressing in a network ” Create and apply an addressing scheme to a network
Assign and verify valid IP addresses to hosts, servers, and networking devices in a LAN environment
Explain the basic uses and operation of NAT in a small network connecting to one ISP
Describe and verify DNS operation
Describe the operation and benefits of using private and public IP addressing
Enable NAT for a small network with a single ISP and connection using SDM and verify operation using CLI and ping
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
Identify and correct IP addressing issues

Implement a small routed network
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 CLI to set basic parameters
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
Implement password and physical security
Verify network status and router operation using basic utilities (including: ping, traceroute,telnet,SSH,arp, ipconfig), SHOW & DEBUG commands

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

Identify security threats to a network and describe general methods to mitigate those threats
Explain today’s increasing network security threats and 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 and verify WAN links
Describe different methods for connecting to a WAN
Configure and verify a basic WAN serial connection

Exam Number/Code: 640-822
Exam Name:Interconnecting Cisco Networking Devices Part 1

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QUESTION 11:
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:
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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 12:
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
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.
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QUESTION 13:
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
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 14:
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.
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QUESTION 15:
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
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 16:
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
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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.
QUESTION 17:
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
Explanation:
The Network layer (also called layer 3) manages device addressing, tracks the location of
devices on the network, and determines the best way to move data, which means that the
Network layer must transport traffic between devices that aren’t locally attached. Routers
(layer 3 devices) are specified at the Network layer and provide the routing services
within an internetwork.
QUESTION 18:
Which OSI layer is associated with the following: The acknowledgement of
transmissions, sequencing, and flow control across a network?
A. Layer 2
B. Layer 3
C. Layer 4
D. Layer 5
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E. Layer 6
F. Layer 7
Answer: C
Explanation:
The Transport layer (Layer 4) defines several functions, including the choice of
protocols. The most important Layer 4 functions are error recovery and flow control. The
transport layer may provide for retransmission, i.e., error recovery, and may use flow
control to prevent unnecessary congestion by attempting to send data at a rate that the
network can accommodate, or it might not, depending on the choice of protocols.
Multiplexing of incoming data for different flows to applications on the same host is also
performed. Reordering of the incoming data stream when packets arrive out of order is
included. Examples include: TCP, UDP, and SPX.
QUESTION 19:
Which OSI layer header contains the address of a destination host that is on another
network?
A. Application
B. Presentation
C. Session
D. Transport
E. Network
F. Data link
G. Physical
Answer: E
Explanation:
Only network address contains this information. To transmit the packets the sender uses
network address and datalink address. But the layer 2 address represents just the address
of the next hop device on the way to the sender. It is changed on each hop. Network
address remains the same.
QUESTION 20:
Which of the following correctly describe steps in the OSI data encapsulation
process? (Choose two)
A. The presentation layer translates bits into voltages for transmission across the physical
link.
B. The transport layer divides a data stream into segments and adds reliability and flow
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control information.
C. Packets are created when the network layer adds Layer 3 addresses and control
information to a segment.
D. The data link layer adds physical source and destination addresses and an FCS to the
segment.
E. Packets are created when the network layer encapsulates a frame with source and
destination host addresses and protocol-related control information.
Answer: B, C

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