Networking 1: Chapter 7 Study Guide
Which is the IEEE standard that sets the standards for wireless (Wi-Fi) networking?
802.11
Which IEEE 802 standard applies to Ethernet?
802.3
At what layer do NICs operate?
Data link
Which OSI layer creates and processes frames?
Data link
Which layer of the OSI model does Project 802 divide into two sublayers?
Data link
The Protocol Data Unit (PDU) at the Data Link layer is called a(n) ____________.
Frame
The two sublayers of the Data Link layer are the _____ and media access control (MAC).
Logical Link Control
Which sublayer defines the use of logical interface points, called Service Access Points (SAPs)?
Logical Link Control
What are the names of the sublayers specified as part of Project 802?
Logical Link Control, Media Access Control
At which Data Link sublayer does the physical address reside?
MAC
What is the name of the protocol data unit (PDU) at the Transport layer?
Segment
The ____________ layer of the OSI model is the bottom layer, and its job is to convert bits into signals and vice versa.
Physical
Which of the following elements might the Data Link layer add to its PDU? (Choose all that apply.)
Physical Addresses, CRC
Which OSI layer is responsible for setting up, maintaining, and ending ongoing information exchanges across a network?
Session
Which OSI layer handles flow control, data segmentation, and reliability?
Transport
(T/F) In the IEEE 802 standards, each number after the dot represents a different technology or subset of a technology.
True
(T/F) The "802" in the IEEE 802 standard represents the year and the month that the project began—February of 1980.
True
(T/F) The IEEE felt the need to develop LAN standards to ensure that network interfaces and cabling from multiple manufacturers would be compatible.
True
(T/F) The PDU for the Application, Presentation, and Session layers is data.
True
(T/F) The Transport layer is the same in both the OSI model and the TCP/IP model.
True
One of the problems that can occur in the Network layer is the incorrect configuration of a hosts IP address.
True
How can you find out what your MAC address is? (Choose all that apply.)
ipconfig /all, getmac, netstat -r, Local Area Connection status
What does the Transport layer use to make sure that a message is reassembled correctly on the receiving device?
sequence number
(T/F) In a layered approach, each layer is only responsible for a specific task instead of the end-to-end communication.
true
The _____ size is a negotiated amount between the transmitting and receiving devices that sets the amount of data that can be transferred before an acknowledgement must be sent and received.
window
The original commercial version of Ethernet supported 10 Mbps bandwidth; the version introduced in the early 1990s supports 100 Mbps; and in 1998, Gigabit Ethernet was introduced. All versions use the same data frame formats, with the same maximum PDU sizes, so they can interoperate freely. Given this information and what you know of layered technologies, which of the following statements is true? (Choose all that apply.)
1)Ethernet works at the data link and physical layers of the OSI model, and upgrades to newer, faster versions of the ethernet can be made by changing only the components that work at these layers. 2)Changes in technology at one layer of the OSI model don't usually affect the operation of other layers
The addition of information to a PDU as it's passed from one layer to the next is called which of the following?
Encapsulation
Which of the following protocols are found at the Application layer of the OSI model? (Choose all that apply.)
FTP, DHCP, SNMP
(T/F) One shortcoming of the OSI Reference Model is that it does not provide a common framework to work with and learn from.
False
(T/F) The Media Access Control (MAC) sublayer defines the use of logical interface points, called Service Access Points (SAPs).
False
(T/F) The Network layer communicates with the Data Link layer and the Session layer.
False
(T/F) The PDU at the Transport layer is data.
False
(T/F) The Physical layer has been divided into two sublayers, called the LLC sublayer and the MAC sublayer.
False
(T/F) When the Data Link layer receives a frame, it first calculates the CRC and compares it to the incoming frame's CRC to make sure that the values are the same.
False
Which of the following is a protocol found at the Network layer?
IP, ARP, ICMP
The Transport layer segments data into smaller chunks, the size of which is determined by which of the following?
Maximum Transmission Unit
One job that a router performs is that of gatekeeper, which means that it can be configured to only allow certain packets access into the network based on a list of rules. What is that process called?
access control
_____ communication refers to the way that each layer on a transmitting computer communicates with the same layer on the receiving computer, just as though they were in direct contact.
peer
