6.2 Flashcards

1
Q

The reverse of ARP in that the host knows its physical address but does not have an IP address; it is utilized when the host does not have the capability to store an IP address (i.e., a diskless workstation), it requests an IP from a server using its 48-bit MAC address.

A

Reverse Address Resolution Protocol (RARP)

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2
Q

Type of addressing that sends traffic to a group of hosts or recipients.

A

Multicast Addressing

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3
Q

Layer that manages data delivery between systems or hosts.

A

Transport Layer

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4
Q

Consists of a set of four numbers, each of which can range rom 0 to 255.

A

IPv4 address

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5
Q

Used to break larger networks into smaller networks.

A

Subnetting

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6
Q

The PDU for Layer 6 is ______.

A

Data

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7
Q

To figure out the number of subnets in a given network:

A

2n (where n = # of network bits used - default network bits)

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8
Q

Private IP Class Ranges:

A
  • A 10.0.0.0/8
  • B 172.16.0.0/12 - 172.31.255.255
  • C 192.168.0.0/16 - 192.168.255.255
  • Windows machines 169.254.0.0/16
  • Loopback address 127.0.0.0/8
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9
Q

The PDU for Layer 5 is _____

A

Data.

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10
Q

What are non-routable addresses that have been reserved for private networks and cannot be routed accross the internet?

A

Private IP ranges

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11
Q

Provides the interface between a computer and the network medium.

A

Network adapter or Network Interface Card (NIC); Operates at Layer 2 and at Network Interface Layer.

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12
Q

Type of Session where communications occur in only one direction.

A

Simplex

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13
Q

Class A address

A
  • First Octet 0-127
  • Binary 0 X X X X X X
  • Default Mask 255.0.0.0
  • CIDR /8
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14
Q

Upper sub layer of the data link layer and handles error checking and flow control between the sender and receiver across a network. This sublayer is reponsible for communicating with the Network Layer.

A

Logical Link Control (LLC)

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15
Q

A form of Boolean logic utilized by a routing device to identify the network in which a particular IP address resides.

A

ANDing

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16
Q

IP configurations can be displayed using what command in Windows? In Linux?

A

ipconfig (Windows)

ifconfig (Linux)

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17
Q

Devices designed to increase the performance of a network with that goal being to move frames as quickly as possible to their destinations; Provides the ability to connect networks with different media types, which is also called bridging.

A

Switch; Operates at Layer 2 and at the Network Interface Layer; Break up (define) collision domains but not broadcast domains.

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18
Q

Determines the next network to which a packet is sent by scanning the destination IP address and searching for the path the packet needs to take.

A

Router; Operates at Layer 3 and the Internet Layer; Routers break up broadcast domains by default and they also break up collision domains.

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19
Q

Is the most commonly used protocol suite in the networking world and was developed by the DoD in an effort to provide dependable and resilient communications.

A

TCP/IP Protocol Suite

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20
Q

Provides a reliable method of transmitting data across the communication link.

A

Data Link Layer (Layer 2)

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21
Q

When a machine has been configured for DHCP and for whatever reason, is unable to contact a DHCP server, the host assigns itself a 169.254.0.0/16 address.

A

Automatic Private IP Addressing (APIPA)

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22
Q

Communications occur in two directions simultaneously.

A

Full-duplex

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23
Q

What is the physical broadcast address?

A

FF FF FF FF FF FF

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24
Q

What is the PDU of layer 4?

A

Segment

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25
Light emitting diodes (LEDs) of various colors, each meaning something different about the current connection.
**Link lights**
26
The interface between the user's application and the netowrk when the network-aware application requires the network resources to accomplish a task.
**Application Layer**
27
Class E address
* First Octet **240-255** * Binary **1111 X X X X** * Default Mask/CIDR **Experimental**
28
The PDU for Layer 7 is \_\_\_\_\_.
**Data**
29
The loss of signal intensity over distance is called \_\_\_\_\_\_\_\_\_\_\_.
**Attenuation**
30
What is the PDU for layer 3?
**Packet**
31
Rules that govern a convention or standard that enables data transfer between two computing endpoints.
**Protocols**
32
Code written by programmers that allow an application to call upon other resources, such as those available on a network.
**Application Programming Interfaces (APIs)**
33
Used to send traffic to everyone on a LAN.
**Broadcast Addressing**
34
A 48-bit (6 byte) hexadceimal address that is burned into the NIC and is used in the delivery of information on an Ehternet network.
**Media Access Control (MAC) address**
35
What are the four layers of the TCP/IP model?
* Application * Transport * Internet * Network Interface
36
On a TCP/IP network, each device (computer, router, or other device with a connection to the network) is referred to as a \_\_\_\_.
**Host**
37
A device that receives a signal and regenerates it.
**Repeater;** Operates at **Layer 1** and at the **Network Interface Layer**
38
Due to the limitation of IPv4 standard addressing, a method called __________ \_\_\_\_\_\_\_\_\_\_\_ _______ was developed; Allows for more efficient use of IPv4 addressing through a method called **subnetting.**
**Classlass Interdomain Routing (CIDR)**
39
Defines where the network ID stops and the host ID begins.
**Subnet mask**
40
What is the PDU for Layer 2?
**Frame**
41
The primary theoretical model for networks of all kinds.
OSI model
42
What are the ways that a Session layer can be set up?
* Simplex * Half-duplex * Full-duplex
43
Maps traffic to the nearest host providing a specific service.
**Anycast addressing**
44
The primary protocol used by the Internet.
**Internet Protocol (IP) address (*IPv4)***
45
Used to send traffic to a single host or destination.
**Unicast Addresing**
46
Sets up, coordinates, and terminates conversations, exchanges, and dialogues between devices across a network.
**Session Layer (Layer 5)**
47
Class D address
* First Octet **224-239** * Binary **1110 X X X X** * Default Mask/CIDR **Multicast Addressing**
48
Communications occur in two directions but not at the same time.
*Half-duplex*
49
What are the seven layers of the OSI model in order?
* 7.) Application* * 6.) Presentation* * 5.) Session* * 4.) Transport* * 3.)Network.* * 2.) Data-Link* * 1.) Physical*
50
What are the low sublayers of Layer 2?
* *Logical Link Control (LLC)* * *Media Access Control (MAC)*
51
What is the PDU for Layer 1?
**Bit**
52
Alleviates the need for different cables by electronically swithcing the transmit and receive wires inside the equipment.
**Uplink Port**
53
The opposite of subnetting in that network bits are taken back and utilized as host bits.
**Supernetting**
54
Address used to test a NIC's ability to send or receive traffic.
**127.0.0.0/8 Loopback Address**
55
A low-level protocol used to associate the hardware 48-bit MAC address to the 32-bit IP address on a physical network.
**Address Protocol Resolution (ARP)**
56
A device that was originally developed for strengthening a signal to extend transmission distance.
**Amplifier**
57
Which layers define how a system connects to network media?
Layers 1 and 2 of the OSI Model.
58
A unit of information passed a self contained data structure from one layer to another on its way up or down the network protocol stack.
**Protocol Data Unit (PDU)**
59
_To determine the number of assignable hosts for each subnet of a network:_
**2n - 2** (where n = # of host bits remaining)
60
Lower sub layer and is responsible for mapping between logical and physical addressing and access to the network media.
*Media Access Control (MAC)*
61
Class B address
* First Octet **128-191** * Binary **10 X X X X X X** * Default Mask **255.255.0.0** * CIDR **/16**
62
The common representation of an IP address is known as ______ \_\_\_\_\_\_\_ ________ where each octet is separated from the others by a decimal point.
**Decimal dotted notation**
63
Multiport repeaters that receive a digital signal, regenerate it, and then broadcast that signal to all connected ports.
**Hub;** Operates at **Layer 1** and at the **Network Interface Layer**; *Part of the same **collision domain** and **broadcast domain.***
64
Responsible for presenting data at the destination with the same meaning and appearance as it had at the source. Data format information
**Presentation Layer**
65
Responsible for the logical addressing and routing of messages to their proper destination.
**Network Layer**
66
Where communications between devices acutally take place.
**Physical Layer (Layer 1)**
67
Class C address
* First Octet **192-223** * Binary **110 X X X X X** * Default Mask **255.255.255.0** * CIDR **/24**