Local Area Networks Practice Exam
Course Introduction
This course provides an in-depth introduction to Local Area Networks (LANs), focusing on their design, implementation, and management within organizations. Students will explore key LAN technologies, including Ethernet, Wi-Fi, and switching, as well as TCP/IP protocols and network addressing. The course covers network topologies, cabling standards, hardware components, and security best practices. Through hands-on labs and practical exercises, students will gain experience in configuring and troubleshooting LAN devices, enabling them to build and maintain reliable, secure local networks suitable for a variety of business environments.
Recommended Textbook Network+ Guide to Networks 5th Edition by Tamara Dean
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Chapter 1: An Introduction to Networking
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Q1) ____ networks are the most popular type of network for medium- and large-scale organizations.
A) Client/server
B) Peer-to-peer
C) Stand-alone
D) Stationary
Answer: A
Q2) The scheme for assigning a unique identifying number to every node on the network.
Answer: G
Q3) A ____ facilitates communication and resource sharing between other computers on the network.
A) servlet
B) workstation
C) personal computer
D) server
Answer: D
Q4) The means through which data is transmitted and received.
Answer: F
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Chapter 2: Network Standards and the OSI Model
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Q1) Manages end-to-end delivery of data.
Answer: G
Q2) Describe how error checking is handled in the Data Link layer.
Answer: Error checking is accomplished by a 4-byte FCS (frame check sequence)field,whose purpose is to ensure that the data at the destination exactly matches the data issued from the source.When the source node transmits the data,it performs an algorithm (or mathematical routine)called a CRC (cyclic redundancy check).CRC takes the values of all of the preceding fields in the frame and generates a unique 4-byte number,the FCS.When the destination node receives the frame,its Data Link layer services unscramble the FCS via the same CRC algorithm and ensure that the frame's fields match their original form.If this comparison fails,the receiving node assumes that the frame has been damaged in transit and requests that the source node retransmit the data.
Q3) Serves as a translator.
Answer: E
Q4) Standards assist in network design.
A)True
B)False
Answer: True
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Chapter 3: Transmission Basics and Networking Media
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Q1) Describe the advantages of twisted pair wiring.
Answer: Twisted pair cable is relatively inexpensive,flexible,and easy to install,and it can span a significant distance before requiring a repeater (though not as far as coax).Twisted pair cable easily accommodates several different topologies,although it is most often implemented in star or star-hybrid topologies.Furthermore,twisted pair can handle the faster networking transmission rates currently being employed.Due to its wide acceptance,it will probably continue to be updated to handle the even faster rates that will emerge in the future.
Q2) Which term describes the hardware that makes up the enterprise-wide cabling system?
A) wiring board
B) patch panel
C) network diagram
D) cable plant
Answer: D
Q3) A form of transmission in which signals are modulated as radio frequency (RF)analog waves that use different frequency ranges.
Answer: H
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Chapter 4: Introduction to TCP/IP Protocols
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Q1) The command used to view IP information on a Windows XP or Windows Vista workstation is ifconfig.
A)True
B)False
Q2) ____ is a terminal emulation protocol used to log on to remote hosts using the TCP/IP protocol suite.
A) NNTP
B) NTP
C) Telnet
D) FTP
Q3) Define and describe DDNS (Dynamic DNS).
Q4) All protocols are routable.
A)True
B)False
Q5) Ports ranging from 49152 through 65535; open for use without restriction.
Q6) If your network does not need or use APIPA,it must be uninstalled to avoid conflicts.
A)True
B)False
Q7) Describe multicasting.
Page 6
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Chapter 5: Topologies and Ethernet Standards
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Q1) IEEE standard for fiber-optic Ethernet networks transmitting data at 100 Mbps.
Q2) A ____ occurs when two transmissions interfere with each other.
A) jam
B) collision
C) carrier sense
D) multiple access event
Q3) On an Ethernet network,a(n)____ is the portion of a network in which collisions occur if two nodes transmit data at the same time.
A) collision domain
B) crash domain
C) interference domain
D) duplicate domain
Q4) Explain how the distributed backbone is connected.Include a description of its benefits.
Q5) IEEE standard for fiber-optic Ethernet networks transmitting data at 10 Gbps.
Q6) The data portion of an Ethernet frame may contain ____ bytes of information.
A) 46
B) 46 to 1500
C) 1500
D) more than 1500
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Chapter 6: Network Hardware
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Q1) Have no means to interpret the data they retransmit.
Q2) When selecting a NIC to install,explain what an administrator should do if a motherboard supports more than one kind of expansion slot.
Q3) Describe several factors to consider when choosing a NIC for a workstation or server.
Q4) Describe advantages of VLAN trunking.
Q5) Switches can create ____ by grouping a number of ports into a broadcast domain.
A) trunks
B) spanning trees
C) gateways
D) VLANs
Q6) Describe how a bridge translates between two segment types.
Q7) External peripheral device specifying 32-bit interface running at 33 MHz.
Q8) ____ are combinations of networking hardware and software that connect two dissimilar kinds of networks.
A) Routers
B) Switches
C) Gateways
D) Broadcast domains
8
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Chapter 7: WANs and Remote Connectivity
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Q1) ____ virtual computing allows a user on one computer,called the client,to control another computer,called the host or server,across a network connection.
A) Random
B) Network
C) Open
D) Remote
Q2) Occurs when data travels from the carrier's switching facility to the customer.
Q3) On most modern WANs,a ring topology relies on ____ rings to carry data.
A) flexible
B) open
C) serial
D) redundant
Q4) Define a fractional T1 and explain why an organization might implement it.
Q5) Describe two important considerations when designing a VPN.
Q6) What sets ATM apart from Ethernet is its ____ size.
A) channel
B) frame
C) variable packet
D) fixed packet
Q7) Describe an important difference between frame relay and X.25.
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Chapter 8: Wireless Networking
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Q1) ____ may use either the 2.4-GHz or 5-GHz frequency range.
A) 802.11a
B) 802.11b
C) 802.11g
D) 802.11n
Q2) Describe how interference can distort and weaken a wireless signal.
Q3) Uses DSSS (direct-sequence spread spectrum)signaling.
Q4) In ____ wireless systems,the result is a point-to-point link.
A) mobile
B) variable
C) fixed
D) open
Q5) Describe the wireless spectrum.
Q6) Satellite Internet access providers typically use frequencies in the C- or ____ bands.
A) L-
B) S-
C) Ku-
D) Ka-
Q7) Explain how residential WiMAX is installed.
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Chapter 9: Network Operating Systems
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Q1) Active Directory organizes multiple domains hierarchically in a domain ____.
A) OU
B) directory
C) tree
D) bucket
Q2) Describe the key difference between freely distributable UNIX and proprietary implementations.
Q3) Administrator account on a UNIX or Linux system.
Q4) The process of copying directory data to multiple domain controllers is known as ____.
A) replication
B) duplication
C) correlation
D) sharing
Q5) A protocol used to access information stored in a directory.
Q6) ____________________ is the execution of multiple tasks at one time.
Q7) The core of all UNIX and Linux systems is called the kernel.
A)True
B)False
Q8) Describe three advantages of choosing a proprietary UNIX system.
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Chapter 10: In-Depth TCP/IP Networking
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Q1) An example of a popular client email software is ____.
A) MIME
B) Microsoft Outlook
C) Sendmail
D) Microsoft Exchange Server
Q2) If subnetting is used on a LAN,explain how devices interpret subnetting information.
Q3) POP3 (Post Office Protocol,version 3)relies on TCP and operates over port ____.
A) 25
B) 11
C) 110
D) 250
Q4) The gateways that make up the Internet backbone are called ____________________.
Q5) The TCP/IP configuration and management utility used on UNIX and Linux systems.
Q6) In CIDR,conventional network class distinctions do not exist.
A)True
B)False
Q7) Describe the function of the route utility and provide examples of how it is entered on a UNIX or Linux system,a Windows-based system,and a Cisco-brand router.
Page 12
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Chapter 11: Voice and Video Over IP
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Q1) A(n)____ is a computer that manages multiple media gateways.
A) MPLS
B) MGCP
C) MEGACO
D) MGC
Q2) ______________________________ is a QoS technique that replaces the IP datagram header with a label at the first router a data stream encounters.
Q3) A computer programmed to act like an IP telephone is known as a(n)____.
A) video phone
B) softphone
C) streaming server
D) compu-phone
Q4) Explain why UDP is preferred over TCP for real-time applications such as telephone conversations and videoconferences.
Q5) Describe the RTCP (Real-time Transport Control Protocol),defined in RFC 3550 by the IETF.
Q6) A device providing translation between network devices running H.323 signaling protocols and devices running other types of signaling protocols.
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Chapter 12: Network Security
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Q1) Explain how to block traffic attempting to exit a LAN and discuss why an administrator would want to do this.
Q2) A(n)____________________ is a thorough examination of each aspect of the network to determine how it might be compromised.
Q3) Describe the two phases IPSec use to accomplish authentication.
Q4) Describe one potential flaw in CHAP and MS-CHAP authentication and explain how it is resolved.
Q5) ____ is a method of encrypting TCP/IP transmissions.
A) PGP
B) IPSec
C) PAP
D) SSL
Q6) Data is encrypted using a single key.
Q7) Encryption is the last means of defense against data theft.
A)True
B)False
Q8) Describe what distinguishes 802.1x from other authentication standards.
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Q9) Define SSH (secure shell)and explain threats it guards against.Include an explanation of the encryption algorithms that may be used with it.
Chapter 13: Troubleshooting Network Problems
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Q1) ____ are frames that are not actually data frames,but aberrations caused by a device misinterpreting stray voltage on the wire.
A) Jabbers
B) Ghosts
C) Giants
D) Runts
Q2) A ____ usually results from a bad NIC.
A) jabber
B) ghost
C) giant
D) runt
Q3) Captures traffic and analyzes frames.
Q4) A sophisticated ____________________ will include a TDR (time domain reflectometer)that issues a signal on a cable and then measures the way the signal bounces back (or reflects)to the TDR.
Q5) Also know as a linemans handset.
Q6) Describe how a problem's solution might affect users and network functionality in terms of security.
Q7) Describe four ways a network professional might use a multimeter.
Page 15
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Chapter 14: Ensuring Integrity and Availability
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Q1) ____ scanning techniques attempt to identify malware by discovering "malware-like" behavior.
A) Integrity checking
B) Polymorphic
C) Signature
D) Heuristic
Q2) Describe clustering and explain why it is more cost-effective than mirroring for large networks.
Q3) A(n)____ virus changes its characteristics every time it is transferred to a new system.
A) stealth
B) encrypted
C) time dependent
D) polymorphic
Q4) ____ is a type of media capable of storing digitized data and that uses a laser to write data to it and read data from it.
A) Tape backup media
B) Optical media
C) Fiber optic media
D) USB
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Chapter 15: Network Management
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Q1) The most common type of caching is ____ caching.
A) online
B) Web
C) Internet
D) device
Q2) A key component in managing networks is identifying and tracking its hardware and software through ____ management.
A) performance
B) change
C) configuration
D) asset
Q3) A networked ____ is perhaps the simplest device to add.
A) workstation
B) hub
C) printer
D) server
Q4) One of the most common free network management tools.
Q5) Changes to ____________________ applications affect all users at once.
Q6) A(n)____________________ is a report of the network's current state of operation.
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