Networking Essentials
Exam Materials
Course Introduction
Networking Essentials provides a comprehensive introduction to the fundamental concepts, technologies, and protocols that form the backbone of computer networks. This course covers key topics such as network topologies, hardware components, IP addressing, subnetting, wireless and wired transmission methods, and common networking devices. Students will explore the basics of the OSI and TCP/IP models, data packet forwarding, network security principles, and troubleshooting methods. Through practical labs and real-world scenarios, participants will develop essential skills in configuring and managing local area networks (LANs), understand the importance of network performance, and gain a solid foundation needed for further studies or entry-level careers in networking.
Recommended Textbook
Business Data Networks and Security 9th Edition by Raymond R. Panko
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15 Chapters
1182 Verified Questions
1182 Flashcards
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Page 2
Chapter 1: Welcome to the Cloud
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92 Verified Questions
92 Flashcards
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Sample Questions
Q1) Which layer governs the hop-by-hop transmission of packets across an Internet?
A)Internet
B)transport
C)both A and B
D)neither A nor B
Answer: A
Q2) Which of the following layers governs internet transmission?
A)physical layer
B)data link layer
C)both A and B
D)neither A nor B
Answer: D
Q3) 200,000 bits per second is ________.
A)20 kbps
B)200 kbps
C)200 Mbps
D)none of the above
Answer: B
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3
Chapter 2: Network Standards
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100 Verified Questions
100 Flashcards
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Sample Questions
Q1) In HTTP,the end of a header field is indicated by a ________.
A)byte position
B)CRLF
C)colon
D)blank line Answer: B
Q2) IP detects errors but does not correct them.Therefore,IP is reliable.
A)True
B)False
Answer: False
Q3) Which layer has more standards?
A)internet
B)application
C)Both of the above have about the same number of standards. Answer: B
Q4) Routers make forward decisions based on a packet's source IP address.
A)True
B)False Answer: False
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Chapter 3: Network Security
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152 Verified Questions
152 Flashcards
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Sample Questions
Q1) To defeat brute-force attacks,a password must be ________.
A)long
B)complex
C)both A and B
D)neither A nor B
Answer: C
Q2) What are the most dangerous types of employees?
A)financial employees
B)manufacturing employees
C)IT security employees
D)former employees
Answer: C
Q3) Credit card number thieves are called ________.(Pick the most precise answer.)
A)numbers racketeers
B)fraudsters
C)identity thieves
D)carders
Answer: D
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Chapter 4: Network Management
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96 Verified Questions
96 Flashcards
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Sample Questions
Q1) Operations manages the network on a second-by-second basis.
A)True
B)False
Q2) Transmission speed normally is measured in bits per second.
A)True
B)False
Q3) Provisioning is setting up service.
A)True
B)False
Q4) SNMP Set commands can ________.
A)ask agents for information about the managed device
B)reroute traffic
C)both A and B
D)neither A nor B
Q5) QoS is quantified through ________.
A)criteria
B)consensus
C)metrics
D)none of the above
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Chapter 5: Wired Ethernet Lans
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117 Verified Questions
117 Flashcards
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Sample Questions
Q1) H2-BC-66-0D-5E-BA is a valid MAC address.
A)True
B)False
Q2) In an Ethernet LAN,switches know the entire data link between the source and destination host.
A)True
B)False
Q3) Ethernet standards govern the ________ layer.
A)physical
B)internet
C)both A and B
D)neither A nor B
Q4) Which of the following is relatively immune to small errors?
A)analog signaling
B)binary signaling
C)both A and B
D)neither A nor B
Q5) Clock cycles are necessary in binary transmission.
A)True
B)False
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Chapter 6: Wireless Lans I
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97 Flashcards
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Sample Questions
Q1) In an extended service set,each access point ________.
A)must have the same SSID
B)must have different SSIDs
C)must have coordinated SSIDs
D)none of the above
Q2) If a radio transmission is easily blocked by obstacles,then you need to maintain ________.
A)a clear line of sight
B)spread spectrum transmission integrity
C)broadband transmission
D)deep transmission
Q3) The total range of possible 802.11 WLAN frequencies in the 2.4 GHz band constitutes ________.
A)a frequency spectrum
B)a broadband
C)a channel
D)a service band
Q4) Beamforming can direct signal strength at individual wireless hosts
A)True
B)False
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Chapter 7: Wireless Lans 2
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75 Flashcards
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Sample Questions
Q1) Classic Bluetooth uses ________.
A)OFDM
B)Frequency Hopping Spread Spectrum
C)both A and B
D)neither A nor B
Q2) PSK mode automatically prevents the use of weak keys.
A)True
B)False
Q3) 802.11i uses ________ as its encryption method.
A)RC4
B)802.11s
C)AES-CCMP
D)WPA
Q4) 802.11i and WPA2 are different names for the same standard.
A)True
B)False
Q5) An unauthorized internal access point is a(n)________.
A)evil twin access point
B)rogue access point
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Chapter 8: Tcpip Internetworking I
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96 Verified Questions
96 Flashcards
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Sample Questions
Q1) What does a router do with ARP request messages?
A)It broadcasts them.
B)It sends them directly to the destination host.
C)both A and B
D)neither A nor B
Q2) ________ is an interior dynamic routing protocol.
A)OSPF
B)BGP
C)Both A and B
D)neither A nor B
Q3) The router selects a row in which the next-hop router is labeled local.The router will send the packet to the ________.
A)default router
B)local next-hop router
C)the local host
D)the destination host
Q4) ICMP error advisement messages add reliability to IP.
A)True
B)False
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Chapter 9: Tcpip Internetworking 2
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104 Verified Questions
104 Flashcards
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Sample Questions
Q1) In SNMP,the manager creates ________.
A)traps
B)GET commands
C)both A and B
D)neither A nor B
Q2) ________ is the processing of presenting external IP addresses that are different from internal IP addresses used within the firm.
A)DNS
B)NAT
C)DHCP
D)None of the above
Q3) Which of the following can be used within a firm?
A)private IP addresses
B)public IP addresses
C)both A and B
D)neither A nor B
Q4) In IP subnet planning,having a large subnet part allows more hosts per subnet.
A)True
B)False
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Chapter 10: Wide Area Networks
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84 Verified Questions
84 Flashcards
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Sample Questions
Q1) The Internet is a ________.
A)LAN
B)WAN
C)both A and B
D)neither A nor B
Q2) Cellular carriers are happy when flat fee users use a corporate 802.11 LAN to place calls instead of using the carrier network.
A)True
B)False
Q3) Carrier access lines to residential buildings typically use ________.
A)one-pair voice-grade UTP
B)two-pair voice-grade UTP
C)two-pair data-grade UTP
D)four-pair UTP
Q4) When a cellular customer moves from one cell in a city to another cell in the same city,this is ________.
A)cell switching
B)a handoff
C)cell hopping
D)roaming
Page 12
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Chapter 11: Networked Applications
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95 Flashcards
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Sample Questions
Q1) RTP supports ________.
A)faster transmission speed
B)jitter control
C)both A and B
D)neither A nor B
Q2) Telephones that can plug directly into a VoIP network are called PCs with multimedia hardware and added software.
A)True
B)False
Q3) An organization that provides cloud services is called a cloud ISP.
A)True
B)False
Q4) Which of the following is true?
A)Web service is one way to implement a SOA.
B)SA Web service is one way to implement SOAP.
C)both A and B
D)neither A nor B
Q5) The detailed method of Skype's encryption for confidentiality is unknown.
A)True
B)False
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Chapter 12: Module a More on Tcp
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4 Flashcards
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Sample Questions
Q1) 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
Q2) Flow control in TCP depends on the ________ field.
A)acknowledgement number
B)window size
C)both A and B
D)neither A nor B
Q3) 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
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Page 14
Chapter 13: Module B More on Modulation
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Sample Questions
Q1) Amplitude modulation uses two ________ levels.
A)loudness
B)frequency
C)both A and B
Q2) Frequency modulation uses two loudness levels.
A)True
B)False
Q3) In QAM,if you have four possible amplitudes,you have ________ possible states.
A)4
B)8
C)16
D)none of the above
Q4) In QAM,if you have eight possible amplitudes,you have ________ possible states.
A)4
B)8
C)16
D)none of the above
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15
Chapter 14: Module C More on Telecommunications
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47 Verified Questions
47 Flashcards
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Sample Questions
Q1) ________ is/are widely used in Europe for PSTN signaling.
A)C7
B)SS7
C)Both A and B
D)Neither A nor B
Q2) Call restriction refers to a switch's ability to control incoming calls to a station.
A)True
B)False
Q3) For PBXs,nighttime calling is ________.
A)a user service
B)an attendant service
C)a management service
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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11 Flashcards
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Sample Questions
Q1) In AD,there is complete replication between domain controllers ________.
A)in the same domain
B)in adjacent levels in the domain hierarchy
C)throughout a tree
D)throughout a forest
Q2) Active Directory is Microsoft's directory server product.
A)True
B)False
Q3) An AD domain ________.
A)has only a single domain controller
B)makes all servers domain controllers
C)must have its servers organized as a tree
D)none of the above
Q4) Which of the following is used to query a directory server to get someone's e-mail address?
A)LDAP
B)IMAP
C)SNMP
D)HTTP
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