Types of Networks
Network Addressing & More
Reference Models
Computer Networks
WiFi and More
100
What does it mean if your computer has an IP in the range of 169.254.0.0 to 169.254.255.255?
In a network employing dynamic IP addressing, if a computer cannot communicate with the DHCP server to obtain an IP address, the Windows operating system automatically assigns a link-local IP, which is in the range of 169.254.0.0 to 169.254.255.255. In this case, the computer can only communicate with computers connected to the same network within this IP address range.
100
What interferes with UTP cable?
RFI, EMI, and crosstalk cause interference to the electrical signals that are transmitted through copper cables. Both UTP and STP use twisted pairs of wires that help protect against crosstalk. However, STP provides greater protection against RFI and EMI than UTP provides.
100
What are the layers of the OSI model?
Away
Pizza
Sausage
Throw
Don't
Please
100
What device(s) would a printer need to be connected to to be considered a network host?
When a printer is connected directly to a networking device, such as a hub, switch, or router, it is considered to be a network host.
100
What are the characteristics of TCP and UDP protocols
TCP is a connection oriented protocol that provides for error recovery and guaranteed delivery mechanisms while UDP offers connectionless delivery and has fewer fields in the packet header than TCP.
200
Bluetooth devices can connect to how many devices at one time?
Bluetooth is a short range wireless technology that is used for personal area network (PAN) devices such as cell phones, keyboards, headsets, and mice. A Bluetooth device can connect to a maximum of seven other devices using this 2.4 GHz technology.
200
What does 10BASE-TX and 100BASE-TX mean?
The 10BASE-TX or 100BASE-TX standard defines a maximum bandwidth of 10Mb/s or 100 Mb/s. The 10 or 100 is the bandwidth, BASE is for baseband, and TX is twisted-pair cabling.
200
The network layer of the OSI model is responsible for ?
The network layer of the OSI model is responsible for routing and logical addressing.
200
What is the primary function of a Switch?
A switch connects multiple devices to a network.
200
Your home WiFi router is what 3 devices in one?
What is a Router
What is a Switch
What is a Wireless Access Point
300
What type of network is Bluetooth considered?
A personal-area network (PAN) connects wireless devices that are within close proximity of an individual person. Bluetooth network technology commonly provides the connectivity.
300
What is the host identifier of the device 2001:0db8:85a3:0000:0000:8a2e:0370:7334?
An IPv6 address is made up of 128 bits that are represented as eight blocks of four hexadecimal digits that are called hextets. Because each hexadecimal digit represents four bits, each hextet represents 16 bits. The /64 network prefix indicates that the first 64 bits, or first four hextets, represent the network portion of the address. Because there are 128 bits in an IPv6 address, this leaves the last 64 bits, or last four hextets, to represent the host identifier. The value for the last four hextets is 0000:8a2e:0370:7334.
300
The application layer is responsible for?
The application layer is responsible for network services to support applications.
300
What is the primary function of a Access Point?
An access point provides wireless connectivity to multiple devices to a physical LAN.
300
What is RG-6?
There are standards that define all of the various types of cables used in networks. RG-6 is a type of coaxial cable.
400
What is a WAN?
Tell me EVERYTHING you know....
A WAN (wide-area network) is used to connect networks that are geographically separated and is typically owned by a service provider. The service provider contracts out WAN services to individuals and organizations.
400
Each layer of the OSI model has an associated PDU (protocol data unit). What is the name of the PDU at each layer?
Each layer of the OSI model has an associated PDU (protocol data unit). The PDU at the application layer is data, at the transport layer is segment, at the network layer is packet, and at the data link layer is frame.
400
The data link layer is responsible for?
The data link layer is responsible for physical addressing and access to the network media.
400
What is the primary function of a Modem?
A modem will connect a home or small office to the Internet.
400
The 802.11n standard is backwards compatible with _____ and why?
The 802.11n standard is backwards compatible with both the 802.11a and 802.11b standards and therefore operates at both 5 GHz and 2.4 GHz.
500
What are the advantages of a client/server model for a network?
Client/server networks are the best choice when designing networks that require centralized security and user account control, or where data needs to be in one location for easy backups.
500
MAC addressing and physical network components are the responsibility of what layer in the TCP/IP model?
MAC addressing and physical network components are the responsibility of the network access layer.
500
The transport layer is responsible for?
The transport layer is responsible for reliable transport and flow control of data across the network.
500
What is the primary function of a Router?
A router will forward traffic between networks.
500
What is the formula to determine how many host are part of a network form the subnet mask?
2^n. Each part of a subnet is 8 bits in length. A subnet mask of 255.255.255.0 represents eight bits in the host portion of the address identified by zero. Eight bits allows for 2^8 possible host addresses that can used on a network.
600
What are the main standards for Ethernet technology?
The 802.3 Ethernet standard specifies that a network implement the CSMA/CD access control method.
600
How do Switches work?
Switches are the central connection point for a LAN and they maintain a MAC address table. The MAC address table has a port number associated with a MAC address for each particular device. The switch inspects a frame to look at the destination MAC address. The switch then looks in its MAC address table and if that MAC address is found, the switch forwards the data to the port that is associated with that particular MAC address.
600
What layers of the TCP/IP model and OSI model are the same / do the same thing?
OSI application -> TCP/IP application
OSI presentation -> TCP/IP application
OSI session -> TCP/IP application
OSI transport -> TCP/IP transport
OSI network -> TCP/IP internet
OSI data link -> TCP/IP network access
OSI physical -> TCP/IP network access
600
What are the advantages of fiber optics?
Optical fiber uses light to transmit signals. Therefore, fiber-optic cable is not affected by EMI or RFI.
600
What is the order for 568A and 568B standards?
