Network + : Questions Missed Ch1-ch5

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  • 1/22 Questions

    How many hosts on a half-duplex segment can talk at one time? 

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Questions missed from Chapter 1 to Chapter 5.

Network Plus Quizzes & Trivia

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  • 2. 

    Fiber-optic cable is immune to electromagnetic interference (EMI) and radio frequency interference (RFI) because it:

    • Transmits analog signals using electricity

    • Transmits analog signals using light impulses

    • Transmits digital signals using light impulses

    • Transmits digital signals using electricity

    Correct Answer
    A. Transmits digital signals using light impulses
    Explanation
    Transmits digital signals using light impulses

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  • 3. 

    Users on your network are saturation your bandwidth because they are using too many non-work related sites. What device would limit the availability of the types of sites that users on a LAN have access to while providing granular control over the traffic between local LAN and the Internet? 

    • Switch

    • DHCP server

    • DNS server

    • Proxy server

    Correct Answer
    A. Proxy server
    Explanation
    A proxy sever can provide many functions. A proxy server can use a caching engine so repeated access request for web information would accelerate repeated access for users, and they can also limit the availability of websites.

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  • 4. 

    What is the purpose of the Frame Check Sequence (FCS) in an Ethernet frame?

    • Error correction

    • Error detection

    • Error recovery

    • Creating errors

    Correct Answer
    A. Error detection
    Explanation
    The FCS can detect frames in the sequence by calculating the cyclic redundancy check (CRC), which verifies that all the bits in the frame are unchanged.

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  • 5. 

    Which IEEE standard specifies the protocol for CSMA/CD?

    • 802.2

    • 802.3

    • 802.5

    • 802.11

    Correct Answer
    A. 802.3
    Explanation
    The 802.3 standard, commonly associated with Ethernet, specifies the media-access method used by Ethernet, which is known as Carrier Sense Multiple Access with Collision Detection. (CSMA/CD).

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  • 6. 

    How many bits is a MAC address?

    • 16

    • 32

    • 48

    • 64

    Correct Answer
    A. 48
    Explanation
    A MAC, or hardware, address is a 48-bit (6-byte) address written in hexadecimal format.

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  • 7. 

    Which of the following devices can work at both Layers 2 and 3 of the OSI model?

    • Hub

    • Switch

    • Repeater

    • Bridge

    Correct Answer
    A. Switch
    Explanation
    A switch is typically just a Layer 2 device segmenting the network by using MAC addresses. However, some higher-end switches can provide Layer 3 services.

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  • 8. 

    What role does that "A" record in a Domain Name Service (DNS) server have in your network?

    • Translates human name to IP address

    • Translate IP address to human name

    • Enables printing, copying, and faxing from one device

    • Controls network packets to optimize performance

    Correct Answer
    A. Translates human name to IP address
    Explanation
    DNS translates human names to IP addresses for routing your packet through the Internet. Hosts can receive the IP address of this DNS server and then resolve host names to IP addresses.

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  • 9. 

    Which type of cable should be used to connect to the console port on a router? 

    • Console cable

    • Crossover cable

    • Straight-through cable

    • USB

    Correct Answer
    A. Console cable
    Explanation
    A rolled cable or console cable would be used to connect a host to a router console serial communication (com) port

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  • 10. 

    You are connected to a server on the Internet and you click on a link on the server and receive a time-out message. What layer could be the cause of this message? 

    • Application

    • Transport

    • Network

    • Physical

    Correct Answer
    A. Application
    Explanation
    If the remote server is busy or does not respond to your web browser request, this is an Application layer problem.

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  • 11. 

    When data is encapsulated, which is the correct order?

    • Data, frame, packet, segment, bits

    • Segment, data, packet, frame, bits

    • Data, segment, packet, frame, bits

    • Data, segment, frame, packet, bits

    Correct Answer
    A. Data, segment, packet, frame, bits
    Explanation
    The encapsulation order is data, segment, frame, packet, bits

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  • 12. 

    What is the purpose of flow control?

    • To ensure that data is retransmitted if an acknowledgement is not received

    • To reassemble segments in the correct order at the destination device.

    • To proved a means for the receiver to govern the amount f data sent by the sender.

    • To regulate the size of each segment.

    Correct Answer
    A. To proved a means for the receiver to govern the amount f data sent by the sender.
    Explanation
    Flow control allows the receiving device to control the pace of the transmitting device so the receiving device's buffer does not overflow.

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  • 13. 

    Which is not a common term asociated with modems? 

    • POTS

    • DSL

    • Cable

    • NIC

    Correct Answer
    A. NIC
    Explanation
    A modem is a device that modulates digital data onto an analog carrier for transmission over an analog medium and then demodulates from the analog carrier to a digital signal again at the receiving end. Therefore, traditional (POTS), DSL, and cable are all common types of modems. The NIC is the expansion card you install in your computer to connect, or interface, your computer to the network.

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  • 14. 

    Which of the following Ethernet unshielded twisted-pair (UTP) cables types is most commonly used? 

    • 10Base-T

    • 100Base-TX

    • 1000Base-TX

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    UTP is commonly used in twisted-pair Ethernet like 10Base-T, 100Base-TX, 1000Base-TX, and so on.

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  • 15. 

    On an Ethernet switched network what address does one host computer use to communicate with another?

    • IP address

    • MAC address

    • Street address

    • HUB address

    Correct Answer
    A. MAC address
    Explanation
    On an Ethernet Network, the MAC address (hardware address) is used for one host to communicate with another.

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  • 16. 

    What is the maximum distance of 100GBase-LR?

    • 1 mile

    • 3 miles

    • 6 miles

    • 25 miles

    Correct Answer
    A. 6 miles
    Explanation
    A 10GBase-LR implementation can go a distance of up to 6 miles.

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  • 17. 

    You need to make a 586B cable. How many pairs will you use? 

    • 1

    • 2

    • 3

    • 4

    Correct Answer
    A. 2
    Explanation
    A 586B is a crossover cable and this cable uses two pairs of wires.

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  • 18. 

    What is the maximum distance of 10GBase-SR?

    • 100 meters (328 feet)

    • 302 meters (990 feet)

    • 305 meters (1000 feet)

    • 1593 km (6 miles)

    Correct Answer
    A. 302 meters (990 feet)
    Explanation
    A 10GBase-SR cable can have a maximum distance of 990 feet (302 meters)

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  • 19. 

    Which device should be used if you need to send incoming packets to one or more machines that are hidden behind a single IP address?

    • Switch

    • Load balancer

    • Hub

    • Repeater

    Correct Answer
    A. Load balancer
    Explanation
    A load balancer uses a little trickery and sends incoming packets to one or more machines that are hidden behind a single IP address. Modern load-balancing routers can use different rules to make decisions about where to route traffic, which can be based on least load, fastest response times, ore simply balancing requests.

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  • 20. 

    What is the decimal value for the binary number 11101000?

    • 9

    • A

    • C

    • B

    Correct Answer
    A. A
    Explanation
    Please review conversion chart!

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  • 21. 

    What are two purposes for segmentation with a bridge?

    • To add more broadcast domains

    • To create more collision domains

    • To add more bandwidth for users

    • To allow more broadcasts for users

    Correct Answer(s)
    A. To create more collision domains
    A. To add more bandwidth for users
    Explanation
    Bridges and switches break up collision domains, which allow more bandwidth for users.

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  • 22. 

    Which of the following are types of flow control? (Choose all that apply.)

    • Buffering

    • Cut-through

    • Windowing

    • Congestion avoidance

    • VLANs

    Correct Answer(s)
    A. Buffering
    A. Windowing
    A. Congestion avoidance
    Explanation
    The common types of flow control are buffering, windowing, and congestion avoidance.

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Quiz Review Timeline (Updated): Mar 20, 2022 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2022
    Quiz Edited by
    ProProfs Editorial Team
  • May 16, 2010
    Quiz Created by
    Taco666hate
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