IT 202 || Ch. 2 - 6
Which of the following are 100BaseT cable types? A) CAT 3 B) CAT 5 C) CAT 5e D) 10BaseFL E) Answers A, B, and C
E) Answers A, B, and C
The term "unshielded twisted pair" describes which of the following network components? A) Cable B) Hub C) Router D) NIC
A) Cable
When connecting a cable run onto a patch panel, which tool should you use? A)110-punchdown tool B)Crimper C)TDR D)Tone generator
A)110-punchdown tool
What is the most popular size fiber-optic cabling? A)62.5/125 µm B)125/62.5 µm C)50/125 µm D)125/50 µm
A)62.5/125 µm
What is a group of nodes that can at any point send messages at the same time, causing a collision? A)Collision domain B)Ethernet C)Fast Ethernet D)Sneakernet
A)Collision domain
What feature of switches keeps track of which MAC address goes to each port? A)FCS B)SAT C)STP D)UTP
A)FCS
What is the purpose of a preamble in an Ethernet frame? A) It gives the receiving NIC time to realize a frame is coming and to know when the frame starts. B)It provides the receiving NIC with the sending NIC's MAC address so communication can continue. C)It provides error-checking to ensure data integrity. D)It contains a description of the data that is to follow so the receiving NIC knows how to reassemble it.
A)It gives the receiving NIC time to realize a frame is coming and to know when the frame starts.
How are the connectors wired on a crossover cable? A)One end is TIA/EIA 568A; the other end is TIA/EIA 568B. B)Both ends are TIA/EIA 568A. C)Both ends are TIA/EIA 568B. D)One end is an RJ-45; the other end is an RG-6.
A)One end is TIA/EIA 568A; the other end is TIA/EIA 568B.
Which statement about Ethernet is correct? A)Only 10- and 100-megabit Ethernet may use a hub. Gigabit Ethernet must use a switch. B)10- and 100-megabit Ethernet has a limit of 1024 nodes. Gigabit Ethernet has no limit. C)Gigabit Ethernet that uses UTP cabling has a maximum distance between the node and switch of 250-400 meters, depending on the manufacturer. D)All versions of 10 Gigabit Ethernet use the same cabling.
A)Only 10- and 100-megabit Ethernet may use a hub. Gigabit Ethernet must use a switch.
Which of the following OSI layers converts the ones and zeroes to electrical signals and places these signals on the cable? A) Physical layer B) Transport layer C) Network layer D) Data Link layer
A)Physical layer
What feature of switches prevents the problem of bridging loops? A)STP B)TCP/IP C)IEEE 802.3 D)UTP
A)STP
Which statement about structured cable is correct? A)The term "demarc" refers to a physical location, whereas the phrase "network interface unit" refers to a piece of equipment provided by an ISP. B)The term "demarc" refers to a piece of equipment provided by an ISP, whereas the phrase "network interface unit" refers to a piece of equipment provided by the customer. C)The terms "demarc" and "network interface unit" refer to pieces of equipment provided by an ISP. D)A demarc is used for fiber cabling, whereas a network interface unit is used for UTP
A)The term "demarc" refers to a physical location, whereas the phrase "network interface unit" refers to a piece of equipment provided by an ISP.
How much data can a typical frame contain? A) 500 bytes B) 1500 bytes C) 1500 kilobytes D) 1 megabyte
B) 1500 bytes
Which protocol creates the final IP packet? A)NIC B)IP C)TCP D)UDP
B) IP
What are the two major UTP variations of Fast Ethernet? A) 100BaseTL B) 100BaseTX C) 100BaseFL D) 100BaseT4
B)100BaseTX
Which item describes the length of cable installed within walls from a telecommunications room out to a jack? A) Cable drop B) Cable run C) Cable tester D) Cable tray
B)Cable run
If a sending system does not know the MAC address of the intended recipient system, it sends a broadcast frame with what MAC address? A)192.168.0.0 B)FF-FF-FF-FF-FF-FF C)11-11-11-11-11-11 D)00-00-00-00-00-00
B)FF-FF-FF-FF-FF-FF
What benefit does full-duplex offer? A)It allows all NICs on a hub to send signals at the same time without collisions. B)It doubles the bandwidth of the network. C)It doubles the speed of the network. D)It doubles both the bandwidth and the speed of the network.
B)It doubles the bandwidth of the network.
Most fiber-optic installations use LEDs to send light signals and are known as what? A)Single-mode B)Multimode C)Complex mode D)Duplex mode
B)Multimode
Andalyn says complete 48-bit MAC addresses are allocated to NIC manufacturers from the IEEE. Buster says the IEEE only assigns the first 24 bits to manufacturers. Carlos says the IEEE assigns only the last 24 bits to manufacturers. A)Only Andalyn is correct. B)Only Buster is correct. C)Only Carlos is correct. D)No one is correct.
B)Only Buster is correct.
From the options that follow, select the one that best describes the contents of a typical (simplified) network frame. A)Sender's MAC address, recipient's MAC address, data, FCS B)Recipient's MAC address, sender's MAC address, data, FCS C)Recipient's IP address, sender's IP address, data, FCS D)Recipient's e-mail address, sender's e-mail address, data, FCS
B)Recipient's MAC address, sender's MAC address, data, FCS
What is the term used to describe where the network hardware and patch panels are kept? A)Drop room B)Telecommunications room C)Routing room D)Telecloset room
B)Telecommunications room
For what purpose is a crimping tool used? A)To splice a 10BaseT cable with a 10BaseFL cable. B)To attach an RJ-45 connector to a UTP cable. C)To attach a 10BaseT cable to a media converter. D)To connect two hubs together.
B)To attach an RJ-45 connector to a UTP cable.
When a network device can only send data or receive data, but not both at the same time, it is operating in what mode? A) Duplex B) Full-duplex C) Half-duplex D) Halfplex
C) Half-duplex
Which of the following NIC types offers the most versatility? A)10 B)10/100 C)10/100/1000 D)Only a nonmultispeed NIC
C)10/100/1000
What type of cabling did the first star-bus topology Ethernet networks use? A)10Base2 B)10Base5 C)10BaseT D)10Base-Cat5
C)10BaseT
How tall is a network router that is 8U? A)8 inches B)8 centimeters C)14 inches D)14 centimeters
C)14 inches
Which of the following best describes an IP address? A)A unique dotted decimal notation burned into every NIC B)A unique 48-bit identifying number burned into every NIC C)A dotted decimal notation assigned to a NIC by software D)A 48-bit identifying number assigned to a NIC by software
C)A dotted decimal notation assigned to a NIC by software
Jenny's office building recently had sections renovated, and now some users are complaining that they can't see the network. She suspects that the workers might have inadvertently broken wires when they did ceiling work. George suggests she use a toner to figure out which wires go to the complaining users. Erin disagrees, saying that Jenny should use a Fox and Hound. Who's right? A)Only George is right. B)Only Erin is right. C)Both George and Erin are right. D)Neither George nor Erin is right.
C)Both George and Erin are right
Which layer of the TCP/IP model involves routing? A)Link layer B)Transport layer C)Internet layer D)Application layer
C)Internet layer
Upon looking at the front of a hub, you notice something labeled as MDI-X. What is this for? A)It is a special receptacle for the power cable. B)It is a regular port used to connect computers. C)It is an uplink port used to connect the hub to another hub. D)It is the brand name of the hub.
C)It is an uplink port used to connect the hub to another hub.
Aside from outright breakage, what's the primary worry with bending a fiber-optic cable too much? A)Attenuation B)Bonding C)Light leakage D)Near-end crosstalk
C)Light leakage
What do you need to connect varying 10 GbE cable types to the same router? A)SFF connectors on all cables B)SC connectors on all cables C)Multisource agreements on the router D)This is not possible.
C)Multisource agreements on the router
What is the first thing a professional cable installer should do when providing an estimate at a site? A)Power on additional lighting. B)Put on a grounding wrist strap. C)Request a floor plan. D)Set up ladders.
C)Request a floor plan.
What will happen if you connect a 10BaseT NIC to an auto-sensing switch? A)The switch will operate in hub mode. B)The entire switch will operate at 10 megabits, even if 100-megabit devices are attached. C)The 10BaseT NIC will operate at 10 megabits while connected 100-megabit devices will operate at their full speed of 100 megabits. D)The 10BaseT NIC will overclock to run at 100 megabits.
C)The 10BaseT NIC will operate at 10 megabits while connected 100-megabit devices will operate at their full speed of 100 megabits.
What is the difference between the R and W designations in 10GBase standards, such as 10GBaseLR and 10GBaseLW, or 10GBaseER and 10GBaseEW? A)The R indicates "regular," or half-duplex. The W indicates "wide mode," which is the 10 Gigabit Ethernet version of full-duplex. B)The R indicates "read," or the ability to receive signals; the W indicates "write," or the ability to send signals. C)The R and W indicate differences in the circuitry, with the W versions used to connect to SONET equipment. D)The R indicates the use of UTP, whereas the W indicates the use of fiber optics.
C)The R and W indicate differences in the circuitry, with the W versions used to connect to SONET equipment.
Your first day on the job, you get a call from the owner complaining that her network connection is down. A quick check of the central switch verifies that it's in good working order, as is the boss's PC. As luck would have it, your supervisor calls at just that time and tells you not to worry; she'll be by in a jiffy with her TDR to help root out the problem. What is she talking about? A)Tune domain resonator, her network tone generator B)Time detuning resonator, her network tester C)Time domain reflectometer, her network tester D)Time detail resource, her network schematic
C)Time domain reflectometer, her network tester
Why must the main cable in a bus topology be terminated at both ends? A)To allow the signal to be amplified so it can reach both ends of the network B)To prevent the signal from dropping off the network before reaching all computers C)To prevent the signal from bouncing back and forth D)To convert the signal to the proper format for a bus network
C)To prevent the signal from bouncing back and forth
John was carrying on at the water cooler the other day, trying to show off his knowledge of networking. He claimed that the company had installed special cabling to handle the problems of crosstalk on the network. What kind of cabling did the company install? A)Coaxial B)Shielded coaxial C)Unshielded twisted pair D)Fiber-optic
C)Unshielded twisted pair
What important backbone technology is also known as Gigabit Ethernet? A) 100BaseT B) 100BaseFL C) 100BaseFX D) 1000BaseT
D) 1000BaseT
What is the physical limit for the number of ports on an Ethernet hub? A) 24 B) 256 C) 512 D) 1024
D) 1024
Which committee is responsible for wireless networking standards? A)IEEE 802.2 B)IEEE 802.3 C)IEEE 802.5 D)IEEE 802.11
D)IEEE 802.11
Which TCP/IP layer includes Layers 5-7 from the OSI seven-layer model? A)Application layer B)Transport layer C)Internet layer D)Link layer
D)Link layer
What topology provides the most fault tolerance? A)Bus B)Ring C)Star-bus D)Mesh
D)Mesh
Which of the following is not a limitation on 10BaseFL cable? A)Maximum speed of 10 Mbps B)Maximum distance between hub and node of 2000 meters C)Maximum of 1024 nodes per hub D)Minimum CAT 3 or better UTP with RJ-45 connectors
D)Minimum CAT 3 or better UTP with RJ-45 connectors
What valuable network tool can you use to examine all frames on the network, regardless of their intended recipient? A)Repeater B)Media converter C)STP D)Sniffer
D)Sniffer
What is the structured cabling name for the end user's office space where network computers are set up? A)Backbone B)Building entrance C)Cable drop D)Work area
D)Work area
Jill needs to run some UTP cable from one office to another. She found a box of cable in the closet and wants to make sure it's CAT 5 or better. How can she tell the CAT level of the cable? A)Check the box. B)Scan for markings on the cable. C)Check the color of the cable—gray means CAT 5, yellow means CAT 6e, and so on. D)Check the ends of the cable. E)Answers A and B
E)Answers A and B
Which components work at Layer 1 of the OSI seven-layer model? A)Cables B)Hub C)Network protocol D)Session software E)Answers A and B
E)Answers A and B
What are three limitations of Fast Ethernet over UTP? A)Distance is restricted to 100 meters from node to hub. B)Shielding may be inadequate for some installations. C)Intrusion from outsiders may be possible without detection. D)The obsolete technology is insufficient for most networks. E)Answers A, B, and C
E)Answers A, B, and C
Which of the following are standard network topologies? A)Bus B)Star C)Ring D)Dual-ring E)Answers A, B, and C
E)Answers A, B, and C
What are the main components of fiber-optic cabling? A)Cladding B)Insulating jacket C)Copper core D)Fiber E)Answers A, B, and D
E)Answers A, B, and D
What aspects of network cabling do the IEEE committees establish? (Select three.) A)Frame size B)Speed C)Color of sheathing D)Cable types E)Answers A, B, and D
E)Answers A, B, and D
What types of coax cabling have been used in computer networking? A)RG-8 B)RG-45 C)RG-58 D)RG-62 E)Answers A, C, and D
E)Answers A, C, and D
Which of the following are fiber connector types? A)LC B)LS C)MT-RJ D)ST E)Answers A, C, and D
E)Answers A, C, and D
What items make up the CSMA/CD system used in Ethernet networks? A)Collision avoidance B)Carrier sense C)Multiple access D)Collision detection E)Answers B, C, and D
E)Answers B, C, and D
What applications are best suited for fiber-optic cabling? A)Short distances B)Wireless networks C)High-EMI areas D)Long distances E)Answers C and D
E)Answers C and D
Which address enables a computer to send a packet that every other PC on the network will process? a. send all b. media access control c. destination d. broadcast
d. broadcast
Which is a major UTP variation of Fast Ethernet? a. 100BaseTX b. 100BaseFL c. 100BaseSX d. 100BaseTL
a. 100BaseTX
Jill needs to run some UTP cable from one office to another. She found a box of cable in the closet and wants to make sure it's CAT 5 or better. How can she tell the CAT level of the cable? a. Check the markings on the cable. b. Check the color of the cable. c. Check the thickness of the cable. d. Check the ends of the cable.
a. Check the markings on the cable
What component best enables you to install more servers in the limited space of a telecommunications room? a. Equipment rack b. Outlet box c. Cable tray d. Patch panel
a. Equipment rack
Which layer of the four-layer model does an Ethernet network interface card operate? a. Link b. Network c. Physical d. Transport
a. Link
Which layer of the TCP/IP five-layer model performs routing? a. Network b. Transport c. Physical d. Application
a. Network
You are asked by your boss to research upgrading all the network cable in your office building. The building manager requires the safest possible cabling type in case of fire, and your boss wants to futureproof the network so cabling doesn't need to be replaced when network technologies faster than 1 Gbps are available. You decide to use CAT 5e plenum cabling throughout the building. Which objective have you satisfied? a. Only the building manager's requirement has been met. b. Only your boss's requirement has been met. c. Neither the building manager's nor your boss's requirements have been met. d. Both the building manager's and your boss's requirements have been met.
a. Only the building manager's requirement has been met.
Which provides an excellent tool for conceptualizing how a TCP/IP network works? a. Transmission Control Protocol/Internet Protocol Model b. Open Systems Interconnection Model c. Network Interface Model d. TCP Session Model
a. Transmission Control Protocol/Internet Protocol Model
Which of the following are not standard network topologies? a. star-to-point b. star-bus c. star-ring d. point-to-point
a. star-to-point
Convert 123 from hexadecimal to binary a. 100100101 b. 100100011 c. 101100011 d. 101000011
b. 100100011
Convert 1010 1111 from binary to hexadecimal a. A D b. A F c. B D d. B F
b. A F
What layer of the five-layer model initiates the HTTP request from the web browser to the web server when you enter in a URL in the location field? a. Network b. Application c. Transport d. Data Link
b. Application
Why would network techs use stranded core cabling from a patch panel's ports to a switch? a. Safety b. Flexibility c. Cost d. Fire rating
b. Flexibility
Which component works only at Layer 1 of the OSI seven-layer model? a. Session software b. Hub c. Network protocol d. NIC
b. Hub
Which organization published protocols for individual local area networks? a. US Government b. IEEE c. IETF d. ICANN
b. IEEE
Which network topology relies on a main line of network cabling? a. mesh b. bus c. star d. ring
b. bus
Convert 23 in base 6 to decimal a. 14 b. 16 c. 15 d. 13
c. 15
Which of the following is most likely to be a MAC address assigned to a NIC? a. 192.168.1.121 b. 713.555.1212 c. 23.4F.17.8A.4C.10 d. 24.17.232.7B
c. 23.4F.17.8A.4C.10
Assume a five layer TCP/IP model as shown in the class notes. The initial data at the application layer is 700 bytes. A 20 byte header is added at each of the transport, network, and data link layers. There is a 4 byte trailer added at the data link layer. What percentage of the bytes sent to the hardware is the original application layer data? a. 93% b. 95% c. 92% d. 94%
c. 92%
What happens when two computers transmit through a hub simultaneously? a. Nothing happens. b. Their signals are reflected back down the cable to their points of origin. c. A collision occurs. d. The terminators prevent any transmission problems
c. A collision occurs.
In a full-duplex switched network, when can collisions occur? a. A collision will occur when a node tries to send to the switch at the same time the switch tries to send to the node. b. A collision will occur when two nodes send broadcast frames at the same time. c. A collision will never occur. d. A collision will occur when two nodes connected to the switch send frames at the same time.
c. A collision will never occur.
What is not a main component of fiber-optic cabling? a. Fiber b. Cladding c. Copper core d. Insulating jacket
c. Copper core
What is generated by every piece of UTP cable in existence? a. EMI b. Modal distortion c. Crosstalk d. ESD
c. Crosstalk
Which committee is responsible for Ethernet standards? a. IEEE 802.2 b. IEEE 803.2 c. IEEE 802.3 d. IEEE 803.3
c. IEEE 802.3
Aside from outright breakage, what's the primary worry with bending a fiber-optic cable too much? a. Attenuation b. Bonding c. Light leakage d. Near-end crosstalk
c. Light leakage
Which layer of the TCP/IP five layer model provides host-to-host communication? a. Data Link b. Application c. Network d. Transport
c. Network
Where are you most likely to encounter a mesh network? a. On any network using plenum cable b. On any network using fiber-optic cable c. On wireless networks d. On wired networks
c. On wireless networks
What type of twisted-pair cabling would work best within ceilings near lighting? a. Stranded core plenum b. Stranded core PVC c. Solid core plenum d. Solid core PVC
c. Solid core plenum
What is the term used to describe where the network hardware and patch panels are kept? a. Routing room b. Telecloset room c. Telecommunications room d. Drop room
c. Telecommunications room
What do NICs encapsulate data into for sending over a network? a. envelope b. segment c. frame d. packet
c. frame
What grade of UTP must be installed in ceilings? a. fire resistant b. PVC c. plenum d. riser
c. plenum
Which standard defines Fast Ethernet using fiber cabling? a. 100BaseT4 b. 100BaseTX c. 10BaseFL d. 100BaseFX
d. 100BaseFX
Convert 1F2E from hex to binary a. 1110100101110 b. 1111000101110 c. 1111100101010 d. 1111100101110
d. 1111100101110
Convert 110001 from binary to hexadecimal a. 5 1 b. B 1 c. A 1 d. 3 1
d. 3 1
Which standard defines Gigabit Ethernet over twisted-pair copper wire? a. 802.3e b. 802.3GbUTP c. 802.3z d. 802.3ab
d. 802.3ab
What organization is responsible for establishing and promoting networking standards? a. International Telecommunications Association (ITA) b. International Networking Standards Organization (INSO) c. Federal Communications Commission (FCC) d. Institute of Electrical and Electronics Engineers (IEEE)
d. Institute of Electrical and Electronics Engineers (IEEE)
What component of Layer 2 of the OSI sevenlayer model is responsible for the ordered delivery of frames, including retransmission of missing or corrupt packets? a. MAC sublayer b. CRC sublayer c. Data Link sublayer d. LLC sublayer
d. LLC sublayer
What is the hard-coded identifier on a NIC? a. OUI b. CRC c. LLC d. MAC
d. MAC
Which of the following is not a limitation on 10BaseT cable? a. Minimum CAT 3 or better UTP with RJ-45 connectors b. Maximum of 1024 nodes per hub c. Maximum speed of 10 Mbps d. Maximum distance between hub and node of 100 feet
d. Maximum distance between hub and node of 100 feet
What provides the physical connection between the PC and the network? a. router b. switch c. interface d. NIC
d. NIC
Which layer of the OSI model makes sure the data is in a readable format for the Application layer? a. Application layer b. Transport layer c. Session layer d. Presentation layer
d. Presentation layer
At which layer of the TCP/IP model are UDP datagrams created? a. Internet b. Link/Network Interface c. Application d. Transport
d. Transport
You've lost the manual to your router. How can you tell the difference between a 1000BaseT port and a 100BaseT port on a router just by looking? a. The 1000BaseT ports are noticeably larger. b. The 100BaseT ports are green, whereas the 1000BaseT ports are gray. c. 1000BaseT ports are reversed with the clip on the top. d. You can't tell the difference by looking. They look exactly the same.
d. You can't tell the difference by looking. They look exactly the same.