NT1210 Final Exam – Flashcards

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question
What is a byte?
answer
A group of 8 bits (a "word")
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When using a truth table, 1 and 0 equal ______.
answer
false
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What do parentheses do in mathematical equations?
answer
Ensure that whatever operation is inside the parentheses is performed first
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What is a node on a network?
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Any device connected to a network
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Which of these following physical topologies has the inherent weakness of a single point of failure? A. Bus B. Mesh C. Star D. Hybrid
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Star
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In this sample Web address, which part identifies the protocol being used? http:// www.example.com/page2
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http
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What is basic to every networking standard?
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Documentation of ideas that all network users must agree to use
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Why is the TCP/IP model divided into layers? A. To make it easier to understand how networks work B. To make it easier to write protocols for networks C. To make it easier to create standards for networks D. All of these
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All of these
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Which layer of the OSI model is responsible for encryption and compression?
answer
Presentation
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What is a closed electrical circuit
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Pos post connected to the electrical Neg post with a cable between
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What is a network encoding scheme?
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It is the way data is transmitted so it can be interpreted between nodes.
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What causes full duplex to transmit and receive simultaneously?
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There are four wires: one wire pair for receiving and another for transmitting.
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What is the max distance end to end UTP
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100 meters
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Ethernet Standard Defines features specific to Ethernet A. 802.2 B. 802.3 C. 802.5 D. 802.11
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802.3
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What is meant by Ethernet "bit rate" as defined by IEEE standards?
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The speed of the cables used in an Ethernet network
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Which pair of wires does UTP cable use to transmit and receive data?
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1, 2 and 3, 6
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To identify where wireless devices, such as APs, should be placed in the network, you should do testing called a/an _____.
answer
site survey
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What does the WiFi Alliance do?
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It is a group of vendors who works to make the wireless LAN industry a success.
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A company installs an 802.11g AP to give its employees wireless access from their cubicles. Carl's cubicle is 20 feet from the AP, Paul's is 70 feet, and Mark's is 150 feet. What is most likely to be true about how these users' tablets will work?
answer
Everyone should have wireless access, but Mark's tablet is more likely to work at a slower speed than the others.
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Which of the following statements is true?
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Omnidirectional antennas broadcast in all directions.
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If an enterprise purchases a WAN link from a service provider and expects that link to be available 24/7/365, it refers to the link as a ______ circuit.
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dedicated
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What layer of the TCP/IP model do routers belong in?
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Layer 3
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What is the point called where the Smart Jack on the Customer side interfaces with the Smart Jack on the Telco side?
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Demarc
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Which of the following is a primary function of the IP protocol?
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Identifying individual hosts and groups of hosts (networks) using IP addresses
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What do dynamic routing protocols do?
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They allow routers to learn how to route network packets more efficiently.
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Which of the following lists a correct match between the IP address and its class?
answer
190.1.1.1, Class B
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One of the major steps forward in WAN technology occurred with the introduction of SONET. Which of these statements is true concerning SONET?
answer
It is a purely digital technology that uses fiber optic WAN links.
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Which IP protocol is designed to dynamically assign IP addresses to devices on a LAN?
answer
DHCP
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You are given the task of subnetting the company's network of 192.168.1.0 into six subnets. How many bits do you need to "borrow" from the host octet to do so?
answer
3
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PC1 connects to a LAN that has router R1 as its default gateway. PC1 wants to send an IP packet to PC2, which has an IP address of 10.1.1.1. Which of the following is true about how PC1 chooses to forward this packet?
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PC1 first determines if the destination is on the same subnet as itself, then decides whether or not to send the packet to R1.
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IP addresses are divided into two parts: the network identifier and the _____ identifier.
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host
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What is the term for the part of the Internet between an ISP and the ISP customer?
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Internet edge
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Which of the following devices is typically found near the Internet edge and offers security services for the network? A. Access point B. CSU/DSU C. Analog modem D. Firewall
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Firewall
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What does a Internet Core design look like
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Internet core
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What technique does a cable provider use to allow video and data transmissions on the same piece of coaxial cable in a customer's home?
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Different frequencies for video and data
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A user is in sales and typically travels three out of four weeks each month. Because he is on the road most of the time, he has decided he needs a mobile Internet connection. Which would be the best choice for him?
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SONET
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What is the difference between public and private IP addresses?
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Private IP addresses are not routable across the Internet, whereas public addresses are.
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Which of the following is a reason why CIDR and NAT were developed?
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...
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Which of the following is a feature defined by CIDR?
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Use of network prefixes that identify IP addresses as aggregates of network gateways or individual gateways
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Which of the following is a private IP network?
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192.168.68.0
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Given an IP address of 172.16.3.5 with a subnet mask of 255.255.255.192, what is the LAST assignable IP address available on the 10th network?
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172.16.2.126
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Which of the following do Transport Layer protocols do for Application Layer protocols?
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Provide a delivery service that recovers and resends lost data
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When one host has multiple application processes transmitting over the network, how are the applications kept separate so they do not interfere with each other?
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Each is given a different port number.
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Host A opens a Web browser and loads a Web page hosted on a Web server. Host A's browser uses TCP port 55555, and the Web server uses the well-known HTTP port for Web servers. If no ports have been reassigned, which of the following is true?
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The server's port = 80.
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Which of the follow correctly defines the "well-known" port number range? A. Numbers 0-255 B. Numbers 0-1023 C. Numbers 1024-49152 D. Numbers 49153-65535
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Numbers 0-1023
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Which of the following correctly defines TCP segmentation?
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The process that TCP software on a host uses to prepare data to be sent by an application by breaking it into smaller pieces that fit the size requirements of the device's outgoing interface
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Which of the following defines what the SEQ field is used for in TCP packets?
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In-Order Delivery
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What happens if a TCP segment is not received by the destination?
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The source retransmits the missing segments based on the acknowledgements received.
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Which of the following statements is true of Transport Layer protocols?
answer
UDP does not guarantee transmission of data.
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Which of the following is true?
answer
Which of the following is true?
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