Business Data Communications
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Course Introduction
Business Data Communications explores the fundamental concepts and practices related to the transmission, reception, and management of data within modern organizations. The course covers key topics such as networking basics, communication protocols, transmission media, wireless technologies, and network security. Students will examine how data communication systems support business operations, enhance organizational efficiency, and contribute to strategic decision-making. Through practical examples and case studies, learners will gain an understanding of current trends in data communications, as well as the challenges and opportunities associated with integrating emerging technologies into business environments.
Recommended Textbook
Business Data Networks and Security 9th Edition by
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15 Chapters
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Page 2
Raymond R. Panko
Chapter 1: Welcome to the Cloud
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92 Verified Questions
92 Flashcards
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Sample Questions
Q1) TCP/IP includes UDP.
A)True
B)False
Answer: True
Q2) Which of the following layers governs internet transmission?
A)the internet layer
B)the transport layer
C)both A and B
D)neither A nor B
Answer: C
Q3) ________ are carried inside ________.
A)Frames, packets
B)Packets, frames
C)Both A and B
D)Neither A nor B
Answer: B
Q4) Packets are carried inside frames.
A)True
B)False
Answer: True
Page 3
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Chapter 2: Network Standards
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100 Flashcards
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Sample Questions
Q1) The OSI ________ layer is designed to handle compression and encryption for applications.
A)application
B)presentation
C)session
D)none of the above
Answer: B
Q2) A codec ________.
A)encodes voice signals into analog signals
B)encodes voice signals into binary signals
C)compresses the signal
D)both B and C
Answer: A
Q3) The electrical signal generated by a microphone is called a(n)________ signal.
A)binary
B)digital
C)analog
D)either A or B
Answer: C
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Page 4
Chapter 3: Network Security
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152 Flashcards
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Sample Questions
Q1) CSIRTs should include ________.
A)IT personnel
B)senior line managers
C)both A and B
D)neither A nor B
Answer: D
Q2) Which of the following is a propagation vector for some worms?
A)e-mail
B)direct propagation
C)both A and B
D)neither A nor B
Answer: C
Q3) Oversight activities include ________.
A)vulnerability testing
B)creating guidelines
C)both A and B
D)neither A nor B
Answer: A
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Chapter 4: Network Management
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Sample Questions
Q1) Which of the following usually has higher availability?
A)data networks
B)the Public Switched Telephone Network
C)Both of the above usually have equal availability.
Q2) Users of an access point share the transmission capacity of the access point.The throughput an individual user gets is called the ________.
A)rated speed
B)aggregate throughput
C)individual throughput
D)all of the above
Q3) Priority is more labor-intensive than overprovisioning.
A)True
B)False
Q4) In the ________ topology,there is only a single possible path between two end nodes.
A)mesh
B)hierarchical
C)both A and B
D)neither A nor B
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Chapter 5: Wired Ethernet Lans
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Sample Questions
Q1) Ethernet receivers detect errors by using the value in the ________ field.
A)PAD
B)preamble
C)data
D)frame check sequence
Q2) If there is a PAD field,it will be added by the ________.
A)sender
B)receiver
C)switch
D)any of the above
Q3) Modal dispersion limits transmission distance in ________.
A)multimode fiber
B)single-mode fiber
C)both A and B
D)neither A nor B
Q4) For full-duplex transmission,optical fiber normally uses ________.
A)1 strand
B)2 strands
C)4 strands
D)8 strands
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Chapter 6: Wireless Lans I
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Sample Questions
Q1) If a wireless client only has two MIMO antennas,an access point with three MIMO antennas will produce better performance than an access point with two MIMO antennas.
A)True
B)False
Q2) Which of the following can operate in the 5 GHz band?
A)802.11n
B)802.11ac
C)both A and B
D)neither A nor B
Q3) In 802.11 networks,the speed I receive on my portable devices is a(n)________.
A)aggregate throughput
B)individual throughput
C)rated speed
D)none of the above
Q4) WLANs normally use ________.
A)licensed bands
B)unlicensed bands
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Chapter 7: Wireless Lans 2
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Sample Questions
Q1) Which Bluetooth profile would a tablet use with a Bluetooth keyboard?
A)Bluetooth input profile
B)Bluetooth I/O profile
C)human interface device profile
D)none of the above
Q2) 802.11i uses ________ as its encryption method.
A)RC4
B)802.11s
C)AES-CCMP
D)WPA
Q3) WPA ________.
A)has not been cracked at all
B)has been partially cracked
C)has been fully cracked but the crack is difficult
D)has been fully cracked and the crack only takes minutes
Q4) Who created WPA?
A)the Internet Engineering Task Force
B)the 802.1 Working Group
C)the 802.11 Working Group
D)the Wi-Fi Alliance
Page 9
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Chapter 8: Tcpip Internetworking I
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Sample Questions
Q1) Which of the following is connectionless?
A)TCP
B)IP
C)both A and B
D)neither A nor B
Q2) To deliver an arriving packet to a destination host on a subnet connected to a router,the router needs to know the destination host's ________ before the router can send the packet on to the destination host.
A)IP address
B)data link layer address
C)both A and B
D)neither A nor B
Q3) Fragmentation is ________.
A)very common
B)suspicious because it is often used by hackers
C)both A and B
D)neither A nor B
Q4) Converting networks to support IPv6 is relatively simple and inexpensive.
A)True
B)False
Page 10
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Chapter 9: Tcpip Internetworking 2
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Sample Questions
Q1) MPLS routers base their decisions on a packet's ________.
A)destination IP address
B)label number
C)both A and B
D)neither A nor B
Q2) Stateless autoconfiguration will give an IPv6 host most or all of the configuration information it needs to operate effectively.
A)True
B)False
Q3) In SNMP,the manager communicates directly with the managed device.
A)True
B)False
Q4) NAT enhances security by preventing ________.
A)sniffers from learning internal IP addresses
B)encryption
C)both A and B
D)neither A nor B
Q5) In SNMP,Set commands tell the agent to change a parameter on the managed device.
A)True
B)False
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Chapter 10: Wide Area Networks
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Sample Questions
Q1) According to the ITU,which of the following may be advertised as 4G?
A)LTE
B)HSPA+
C)both A and B
D)neither A nor B
Q2) A WAN is a network that ________.
A)links different sites together
B)provides service within about a mile
C)provides service within a site
D)all of the above
Q3) To use your smartphone as a wireless access point today generally will require you to pay a larger monthly cellular fee.
A)True
B)False
Q4) Which of the following go from one customer site to another customer site?
A)leased lines
B)access lines
C)both A and B
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Page 12
Chapter 11: Networked Applications
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Sample Questions
Q1) Virtualization has contributed to the popularity of cloud computing.
A)True
B)False
Q2) In SOAs,a program written in C++ can communicate with a program written in Java.
A)True
B)False
Q3) Which of the following is not an issue for cloud utility computing?
A)the possibility of losing access
B)the possibility of getting locked into proprietary software
C)very high costs
D)security concerns
Q4) Which of the following is likely to dominate in VoIP?
A)SIP
B)H)323
Q5) Antivirus software checks e-mail attachments for ________.
A)viruses
B)Trojan horses
C)both A and B
D)neither A nor B
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Chapter 12: Module a More on Tcp
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Sample Questions
Q1) Flow control in TCP depends on the ________ field.
A)acknowledgement number
B)window size
C)both A and B
D)neither A nor B
Q2) A TCP segment begins with octet 8,658 and ends with octet 12,783.What number does the receiving host put in the acknowledgment number field of the TCP segment that acknowledges this TCP segment?
A)8,658
B)8,659
C)12,783
D)12,784
Q3) A TCP segment carries data octets 456 through 980.The following TCP segment is a supervisory segment carrying no data.What value is in the sequence number field of the latter TCP segment?
A)456
B)457
C)980
D)981
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Page 14
Chapter 13: Module B More on Modulation
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Sample Questions
Q1) In QAM,if you have four possible amplitudes,you have ________ possible states.
A)4
B)8
C)16
D)none of the above
Q2) BPSK modulation uses two ________.
A)amplitudes
B)frequencies
C)phases
D)none of the above
Q3) QPSK modulation uses ________ phases. A)2
B)4
C)8
D)15
Q4) QAM uses ________.
A)amplitude modulation
B)phase modulation
C)both A and B
D)neither A nor B
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Chapter 14: Module C More on Telecommunications
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Sample Questions
Q1) A ________ provides telephone service to customers.
A)PTT
B)Ministry of Telecommunications
C)both A and B
D)neither A nor B
Q2) For PBXs,call forwarding is ________.
A)a user service
B)an attendant service
C)a management service
Q3) Call restriction refers to a switch's ability to control incoming calls to a station.
A)True
B)False
Q4) Which of the following would a mail order company's customers prefer?
A)900 number service
B)800 number service
C)WATS service
D)They would have no preference among these choices.
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Chapter 15: Module D Directory Servers
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Sample Questions
Q1) If a company has multiple authentication servers,which devices are likely to hold the authentication data?
A)authenticators
B)authentication servers individually
C)authentication servers doing replication
D)directory servers
Q2) A group of Active Directory domains organized in a hierarchy is a ________.
A)network
B)tree
C)forest
D)none of the above
Q3) A company may have many AD domains.
A)True
B)False
Q4) A group of Active Directory trees organized in a hierarchy is a forest.
A)True
B)False
Q5) Active Directory is Microsoft's directory server product.
A)True
B)False
Page 17
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