NT1210 Final Exam – Flashcards
Unlock all answers in this set
Unlock answersquestion
What is a byte?
answer
A group of 8 bits (a "word")
question
When using a truth table, 1 and 0 equal ______.
answer
false
question
What do parentheses do in mathematical equations?
answer
Ensure that whatever operation is inside the parentheses is performed first
question
What is a node on a network?
answer
Any device connected to a network
question
Which of these following physical topologies has the inherent weakness of a single point of failure? A. Bus B. Mesh C. Star D. Hybrid
answer
Star
question
In this sample Web address, which part identifies the protocol being used? http:// www.example.com/page2
answer
http
question
What is basic to every networking standard?
answer
Documentation of ideas that all network users must agree to use
question
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
answer
All of these
question
Which layer of the OSI model is responsible for encryption and compression?
answer
Presentation
question
What is a closed electrical circuit
answer
Pos post connected to the electrical Neg post with a cable between
question
What is a network encoding scheme?
answer
It is the way data is transmitted so it can be interpreted between nodes.
question
What causes full duplex to transmit and receive simultaneously?
answer
There are four wires: one wire pair for receiving and another for transmitting.
question
What is the max distance end to end UTP
answer
100 meters
question
Ethernet Standard Defines features specific to Ethernet A. 802.2 B. 802.3 C. 802.5 D. 802.11
answer
802.3
question
What is meant by Ethernet "bit rate" as defined by IEEE standards?
answer
The speed of the cables used in an Ethernet network
question
Which pair of wires does UTP cable use to transmit and receive data?
answer
1, 2 and 3, 6
question
To identify where wireless devices, such as APs, should be placed in the network, you should do testing called a/an _____.
answer
site survey
question
What does the WiFi Alliance do?
answer
It is a group of vendors who works to make the wireless LAN industry a success.
question
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.
question
Which of the following statements is true?
answer
Omnidirectional antennas broadcast in all directions.
question
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.
answer
dedicated
question
What layer of the TCP/IP model do routers belong in?
answer
Layer 3
question
What is the point called where the Smart Jack on the Customer side interfaces with the Smart Jack on the Telco side?
answer
Demarc
question
Which of the following is a primary function of the IP protocol?
answer
Identifying individual hosts and groups of hosts (networks) using IP addresses
question
What do dynamic routing protocols do?
answer
They allow routers to learn how to route network packets more efficiently.
question
Which of the following lists a correct match between the IP address and its class?
answer
190.1.1.1, Class B
question
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.
question
Which IP protocol is designed to dynamically assign IP addresses to devices on a LAN?
answer
DHCP
question
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
question
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?
answer
PC1 first determines if the destination is on the same subnet as itself, then decides whether or not to send the packet to R1.
question
IP addresses are divided into two parts: the network identifier and the _____ identifier.
answer
host
question
What is the term for the part of the Internet between an ISP and the ISP customer?
answer
Internet edge
question
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
answer
Firewall
question
What does a Internet Core design look like
answer
Internet core
question
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?
answer
Different frequencies for video and data
question
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?
answer
SONET
question
What is the difference between public and private IP addresses?
answer
Private IP addresses are not routable across the Internet, whereas public addresses are.
question
Which of the following is a reason why CIDR and NAT were developed?
answer
...
question
Which of the following is a feature defined by CIDR?
answer
Use of network prefixes that identify IP addresses as aggregates of network gateways or individual gateways
question
Which of the following is a private IP network?
answer
192.168.68.0
question
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?
answer
172.16.2.126
question
Which of the following do Transport Layer protocols do for Application Layer protocols?
answer
Provide a delivery service that recovers and resends lost data
question
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?
answer
Each is given a different port number.
question
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?
answer
The server's port = 80.
question
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
answer
Numbers 0-1023
question
Which of the following correctly defines TCP segmentation?
answer
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
question
Which of the following defines what the SEQ field is used for in TCP packets?
answer
In-Order Delivery
question
What happens if a TCP segment is not received by the destination?
answer
The source retransmits the missing segments based on the acknowledgements received.
question
Which of the following statements is true of Transport Layer protocols?
answer
UDP does not guarantee transmission of data.
question
Which of the following is true?
answer
Which of the following is true?
