Network Administration Study Guide Questions
Course Introduction
Network Administration is a comprehensive course that covers the principles, techniques, and tools necessary for managing and maintaining computer networks. Students will learn about network architectures, configuration, and the deployment of network services such as DNS, DHCP, file sharing, and remote access. The course includes practical exercises in installing and configuring network devices such as routers, switches, and firewalls, as well as monitoring network performance and troubleshooting common issues. Security best practices, backup strategies, and disaster recovery planning are also emphasized, enabling students to effectively support and secure organizational network infrastructures.
Recommended Textbook
Business Data Communications Infrastructure Networking and Security 7th Edition by William Stallings
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Chapter 1: Introduction
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Q1) The type of network commonly used with multiple premises in businesses is called a
Answer: Wide Area Network (WAN)
Q2) Which of the following is NOT one of the four types of information found on networks?
A)data
B)control
C)video
D)voice
Answer: B
Q3) The two media technologies currently driving the evolution of data communications networks are local area networks and cable television networks.
A)True
B)False
Answer: False
Q4) A __________ is the element that provides UC users with a unified user interface across communication devices.
Answer: RTC (real-time communications)dashboard
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Chapter 2: Business Information
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Q1) ________ consists of information that can be represented by a finite alphabet of symbols,such as the numbers 0 through 9 or the symbols represented on a computer keyboard.
Answer: Data
Q2) In digital systems,the information rate and the capacity of a digital channel are measured in:
A)mhz
B)dps
C)bps
D)ghz
Answer: C
Q3) A ________ is the smallest single component of a digital image.
A)RGB
B)megapixel
C)pixel
D)none of the above
Answer: C
Q4) The _________ (IRA)character set is the most common format for English language text files.
Answer: ASCII
Page 4
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Chapter 3: Distributed Data Processing
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Q1) The three ways of organizing data for use by an organization are:
A)centralized,replicated,and partitioned
B)centralized,structured,and partitioned
C)structured,replicated,and partitioned
D)centralized,replicated,and structured
Answer: A
Q2) ___________ encompasses any subscription-based or pay-per-use service that extends an organization's existing IT capabilities over the Internet in real time.
A)Cloud computing
B)ISP
C)DDP
D)Client / server architecture
Answer: A
Q3) When a _________ data processing strategy is followed,computers are dispersed throughout an organization.
Answer: distributed
Q4) An increasingly common organizational approach for distributed data processing is the ___________ architecture.
Answer: client - server
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Chapter 4: Data Transmission
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Q1) Given a frequency of 60 Hz ( cycles per second ),the period of the signal is:
A)0.166667 sec.
B)0.166667 Hz.
C)one second
D)60 seconds
Q2) The wavelength of an analog signal is:
A)the distance traveled by the wave in the time defined by its period
B)the distance traveled by the wave in one second
C)the period of the wave
D)the amplitude of the wave
Q3) __________ has been experienced by anyone who,while having a telephone conversation,has been able to hear another telephone conversation.
Q4) The _________ of a signal is defined as the distance between two points of corresponding phase of two consecutive cycles,such as maximum amplitudes or where the wave crosses zero.
Q5) The four categories of noise are: thermal noise,intermodulation,impulse noise,and
Q6) The __________ is the maximum height of the wave above or below a given reference point.
Page 6
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Chapter 5: Data Communication Fundamentals
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Q1) The efficiency of an asynchronous transmission using 1 stop bit,1 start bit,and 1 parity bit is:
A)20%
B)30%
C)50%
D)70%
Q2) For sizable blocks of data,asynchronous transmission is far more efficient than synchronous.
A)True
B)False
Q3) An encoding scheme is used:
A)in digital transmission to map binary digits to signal elements
B)in analog transmission to clean up the quality of the transmission
C)to help minimize errors
D)all of the above
Q4) An _________ is a continuously varying electromagnetic wave that may be transmitted over both guided and unguided media.
Q5) _________ is the physical propagation of the signal along a communication medium.
Q6) The mapping from binary digits to signal elements is the ________ scheme.
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Chapter 6: Data Link Control and Multiplexing
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Q1) ________ is used in fiber-to-the-home (FTTH)systems.
Q2) Which of the following is NOT one of the example applications of T-1 leased transmission facilities?
A)cable television systems
B)private data networks
C)video teleconferencing
D)high-speed digital facsimile
Q3) To prevent interference,the channels are separated by ________,which are unused portions of the spectrum.
Q4) Which of the following is a generic term that describes sharing of a communications channel by multiple communicating stations?
A)multiprogramming
B)multiplexing
C)multi-access channels
D)digital channels
Q5) Although the use of ________ for voice transmission is declining,it is still used widely for television distribution systems,including broadcast television and cable TV.
Q6) One of the most popular forms of synchronous TDM is known as ________.
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Chapter 7: The Internet
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Q1) Commercial use of the Internet was discouraged until approximately 1988.
A)True
B)False
Q2) ARPANET was the first message-switching network.
A)True
B)False
Q3) The first two important applications developed for the ARPANET were:
A)Telnet and FTP
B)Telnet and email
C)FTP and email
D)email and world-wide-web
Q4) The layout of the browser display is controlled by the __________ standard,which defines embedded commands in text files that specify features of the browser display,such as the fonts,colors,images and their placement on the display,and the location of the locations where the user can invoke the hyperlinks and their targets.
Q5) The Internet grew out of a Department of Education project.
A)True
B)False
Q6) _______ provides a universal language for remote computer terminals.
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Chapter 8: Tcp / Ip
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Q1) ________ is a Cisco proprietary product.
A)VoIP
B)SKINNY
C)SMTP
D)SIP
Q2) UDP provides guaranteed delivery of messages.
A)True
B)False
Q3) Features of ________ include mailing lists,return receipts,and forwarding.
Q4) The ________ supports a basic electronic mail facility by providing a mechanism for transferring messages among separate hosts.
A)SNMP
B)SSH
C)HTTP
D)SMTP
Q5) A _________ is a device that connects two networks and whose primary function is to relay data from one network to the other on a route from the source to the destination end system.
Q6) The standard network management protocol for TCP / IP networks is _________.
Page 10
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Chapter 9: Client Server, intranet, and Cloud Computing
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Q1) Client-server computing is fundamentally based on networking.
A)True
B)False
Q2) ________ is a set of function and call programs that allow clients and servers to intercommunicate.
Q3) The _________ is a networking facility that provides connectivity and transport of cloud services between cloud consumers and cloud providers.
Q4) The traditional client / server architecture involves two levels,or tiers: a client tier and a _________ tier.
Q5) All applications operate over a uniform _________.
A)SQL
B)API
C)SaaS
D)IaaS
Q6) Implementing an extranet removes the need for a company to maintain a public web site.
A)True
B)False
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Chapter 10: Internet-Based Applications
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Q1) The _________ is fundamentally a client / server application running over the Internet and TCP / IP intranets.
A)World Wide Web
B)ADMD
C)MDA
D)Hypertext Transfer Protocol
Q2) ________ refers to the combination of HTTP and SSL to implement secure communication between a Web browser and a Web server.
Q3) ________ defines a format for text messages that are sent using e-mail.
A)RFC 208
B)RFC 1939
C)RFC 137
D)RFC 822
Q4) Email functions visible to a user,such as facilities for preparing and submitting messages,filing,replying,and forwarding,are considered:
A)message transfer agent functions
B)client functions
C)email client functions
D)user agent functions
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Chapter 11: Internet Operation
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Q1) _________ traffic does not easily adapt,if at all,to changes in delay and throughput across an internet.
Q2) Two notable consumer electronic gadgets that are impacting the traffic load on networks are the digital versatile disc and the digital still camera.
A)True
B)False
Q3) Subnets are used where the number of networks exceeds the number of hosts within a specific company or organization.
A)True
B)False
Q4) _________ is an identifier for a set of interfaces in which a packet is delivered to one of the interfaces identified by that address (the "nearest" one,according to the routing protocols' measure of distance).
Q5) _________ makes more efficient use of the 32-bit IP address than the class-based method primarily because it makes more efficient use of the address space.
Q6) Using what is known as a link state routing algorithm,the ________ protocol is widely used as an interior router protocol in TCP / IP networks.
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Chapter 12: Lan Architecture and Infrastructure
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Q1) The function of a __________ protocol is to control access to the transmission medium and to provide an orderly and efficient use of that capacity.
A)LLC
B)SAN
C)MAC
D)MAN
Q2) Ethernet requires that each segment be no more than ___________ in length, including the installed cabling and patch cables at either end,for 10-Mbps and 100-Mbps transmissions.
Q3) __________ is a common link protocol for all LANs and specifies the mechanisms for addressing stations across the medium and for controlling the exchange of data between two users.
Q4) A service provided as an alternative for attached devices using LLC is:
A)unacknowledged connectionless service
B)connection-mode service
C)acknowledged connectionless service
D)all of the above
Q5) With __________,the waves are guided along a solid medium,such as copper twisted pair,copper coaxial cable,or optical fiber.
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Chapter 13: Ethernet, switches, and Virtual Lans
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Q1) Every MAC frame must include two addresses,which allows an alternative receiver to be designated in the event an error occurs.
A)True
B)False
Q2) A _________ provides a means of interconnecting similar LANs.
Q3) PoE makes it possible to distribute both power and data using Ethernet cabling.
A)True
B)False
Q4) _________ makes it possible to distribute both power and data using Ethernet cabling.
A)VLAN
B)PoE
C)MAC
D)CSMA
Q5) A _________ is octets added to ensure that the frame is long enough for proper CD operation.
Q6) Two general approaches to connecting multiple LANs are bridges and switches. A)True
B)False
Q7) A hub uses a ________ wiring arrangement to attach stations to the hub.
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Chapter 14: Wireless Lans
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Q1) An ___________consists of two or more BSSs interconnected by a distribution system.
Q2) The physical layer for IEEE 802.11 has been issued in _______ stages.
A)3
B)5
C)7
D)9
Q3) Any entity that has station functionality and provides access to the distribution system via the wireless medium for associated stations.
A)access point
B)basic service set
C)extended service set
D)coordination function
Q4) The end result for 802.11 is a MAC algorithm called __________ that provides a distributed access control mechanism with an optional centralized control built on top of that.
Q5) The IEEE 802.11 MAC layer covers three functional areas: reliable data delivery, access control,and _________.
Q6) For privacy ,802.11 defined the __________ algorithm.
Page 16
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Chapter 15: Wan Technology and Protocol
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Q1) Which of the following is an advantage of circuit switching?
A)provides speed conversion
B)compatible with voice
C)appears nonblocking
D)logical multiplexing
Q2) ________ are the means by which the network is managed and by which calls are established,maintained,and terminated.
Q3) An advantage of packet switching over circuit switching is:
A)line efficiency is better
B)priorities can be used
C)can carry out data-rate conversion
D)all of the above
Q4) Basic packet switching technology has recently been developed to replace circuit switching.
A)True
B)False
Q5) It is desirable to have only one path from sender to receiver to avoid excess costs.
A)True
B)False
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Chapter 16: Wan Services
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Q1) ___________ notifies the user that congestion avoidance procedures should be initiated where applicable for traffic in the same direction as the received frame.
Q2) Systems using common channel signaling:
A)employ a separate virtual channel for connection setup
B)carry connection information within each frame
C)use an expanded control field
D)do not use channels
Q3) Most WAE implementations use __________to interconnect network endpoints.
Q4) Frame Relay is a more streamlined communication process than X.25.
A)True
B)False
Q5) Carrier Ethernet often capitalizes on the existence of optical fiber and dense wavelength division multiplexing (DWDM) infrastructure to provide WAN and MAN services to subscribers.
A)True
B)False
Q6) Congestion _________ procedures are used at the onset of congestion to minimize the effect on the network.
Q7) Logical connections in ATM are referred to as __________.
Page 18
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Chapter 17: Wireless Lans
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Q1) The WAP Programming Model uses a ________ that acts as a proxy server for the wireless domain.
A)translator
B)WAP server
C)gateway
D)decoder
Q2) The objective of the __________ generation of wireless communication is to provide fairly high-speed wireless communications to support multimedia,data,and video in addition to voice.
Q3) ___________ have the following characteristics: Circular orbit at an altitude in the range of 5000-12,000 km. The orbit period is about 6 hours. The diameter of coverage is from 10,000 to 15,000 km. Round-trip signal propagation delay is less than 50 ms. The maximum time that the satellite is visible from a fixed point on earth (above the radio horizon)is a few hours.
Q4) There are basically four ways to divide the spectrum among active users: frequency division multiple access (FDMA),time division multiple access (TDMA),code division multiple access (CDMA),and ______________.
Q5) A __________ is a mobile device that mobile workers can use as a personal information manager.
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Chapter 18: Computer and Network Security Threats
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Q1) A _________ propagates itself and activates itself,whereas a bot is controlled from some central facility,at least initially.
Q2) Which of the following statements regarding macro viruses is true?
A)a macro virus is platform independent
B)macro viruses infect documents,not executable portions of code C)macro viruses are easily spread
D)all of the above
Q3) A stealth virus is explicitly designed to hide itself from detection by antivirus software.
A)True
B)False
Q4) _________ are in the nature of eavesdropping on,or monitoring of, transmissions.The goal of the attacker is to obtain information that is being transmitted.
Q5) A macro virus is a larger and more self-contained than an ordinary virus.
A)True
B)False
Q6) Traffic analysis is an active attack.
A)True
B)False
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Chapter 19: Computer and Network Security Techniques
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Q1) At _________ the IP header is exposed and so filtering or firewalls can be applied to IP addresses.
A)layer 1
B)layer 2
C)layer 3
D)layer 4
Q2) The IPsec Architecture document mandates support for two types of key management: manual and ___________.
Q3) The ________________ facility enables communicating nodes to encrypt messages to prevent eavesdropping by third parties.
Q4) IEEE 802.11i consists of two main functions: authentication and access control.
A)True
B)False
Q5) An IDS comprises three logical components: sensors,user interface,and _______.
Q6) A key logical component of an IDS is:
A)sensors
B)analyzers
C)user interface
D)all of the above
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