Networking Ch7 Exam 3

Which layer has been subdivided into the logical link control sublayer and the Media access control sublayer? Network Physical Internetwork Data Link Transport

Data Link

Which layer of the OSI model does Project 802 divide into two sublayers? Physical Network and Data Link Data Link Data Link and Physical Network

Data Link

Which of the following protocols are found at the Application layer of the OSI model? (choose all that apply) -SNMP -ARP -FTP -TCP -DHCP -ICMP

-FTP -DHCP -SNMP

Put the layers of the OSI model in the proper numeric order: Session Network Transport Data Link Presentation Physical Application

7: Application 6: Presentation 5: Session 4: Transport 3: Network 2: Data Link 1: Physical

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

Match the layers of the OSI model with their counterparts in the TCP/IP model. Layers of the OSI Model: Physical, Application, Presentation, Transport, Session, Data Link, Network TCP/IP Model: Application, Transport, Internetwork, Network Access

Application, Session, and Presentation are all Application Transport is Transport Network is Internetwork Data Link and Physical are Network Access

Which sublayer defines the use of logical interface points, called Service Access Points (SAPs)?

Logical Link Control

Which OSI layer creates and processes frames?

Data Link

At what layer do NICs operate?

Data Link

The addition of information to a PDU as it's passed from one layer to the next is called which of the following? -Fragmentation -All of these -Deencapsulation -Encapsulation -Segmentation

Encapsulation

The Network layer communicates with the Data Link layer and the Session layer. True or False?

False

The PDU at the Transport layer is data. True or false?

False

True or false. The Media Access control (MAC) sublayer defines the use of logical interface points, called Service Access Points (SAPs).

False

True or false. The Physical layer has been divided into two sublayers, called the LLC sublayer and the MAC sublayer.

False

True or false? One shortcoming of the OSI Reference Model is that it does not provide a common framework to work with and learn from.

False

The PDU at the Data Link layer is called a ____________.

Frame

Which of the following is a protocol found at the Network layer? (Choose all that apply) -IP -SNMP -Ethernet -ICMP -ARP

IP, ARP, ICMP

The two sublayers of the Data Link layer are the _____ and media access control (MAC).

Logical Link Control

The segmenting of the data is important because every network technology has a maximum frame size called the ______________________

Maximum Transmission Unit

At which Data Link sublayer does the physical address reside? Physical LLC NAC None of these DAC

None of these

Which IEEE 802 standard applies to Ethernet? 802.11 802.5 None of these 802.4 802.2

None of these

The transport layer segments data into smaller chunks, the size of which is determined by which of the following? LLC MSS TCP PDU None of these

None of these choices

_____ 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

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? Physica addresses Time-to-Live Sequence number Port numbers CRC

Physical Addresses CRC

The Protocol Data Unit (PDU) at the transport layer is called a(n) ____________.

Segment

What does the Transport layer use to make sure that a message is reassembled correctly on the receiving device? Select one: a. source port number b. window Size c. destination port number d. sequence number e. acknowledgement

Sequence number

Which OSI layer handles flow control, data segmentation, and reliability? Session Transport Network Physical Data Link

Transport

(T/F) In a layered approach, each layer is only responsible for a specific task instead of the end-to-end communication.

True

(T/F) The "802" in the IEEE 802 standard represents the year and the month that the project began—February of 1980.

True

True or false. One of the problems that can occur in the Network layer is the incorrect configuration of a hosts IP address

True

True or false? IEEE felt the need to develop LAN standards to ensure that network interfaces and cabling from multiple manufacturers would be compatible.

True

True or false? Peer 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.

True

True or false? The Transport layer is the same in both the OSI model and the TCP/IP model.

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.) a. Ethernet works at the Data Link and Physical layers of the OSI model, and upgrades to newer, faster versions of Ethernet can be made by changing only the components that work at these layers. b. Ethernet spans several layers and requires a new protocol stack to upgrade to new versions. c. Changes in technology at one layer of the OSI model don't usually affect the operation of other layers. d. Ethernet isn't considered a scalable technology.

a. Ethernet works at the Data Link and Physical layers of the OSI model, and upgrades to newer, faster versions of Ethernet can be made by changing only the components that work at these layers. c. Changes in technology at one layer of the OSI model don't usually affect the operation of other layers.

How can you find out what your MAC address is? (Choose all that apply.) A.) Right click on the Local Area Connection and choose staus B.) Open a command prompt and type the command arp -d C.) Open a command prompt and type the command ipconfig /all D.) Issue the netstat -r command E.) Open a command prompt and type the command getmac

a. Right-click on the Local Area Connection and choose status. c. Open a command prompt and type the command ipconfig /all. d. Issue the netstat -r command e. Open a command prompt and type the command getmac.

13. What are the names of the sublayers specified as part of Project 802? (Choose all that apply.) a. Data Link Control (DLC) b. Logical Link Control (LLC) c. Carrier Sense Multiple Access/Collision Detection (CSMA/CD) d. Media Access Control (MAC) e. Physical

b. Logical Link Control (LLC) d. Media Access Control (MAC)

What information would you find in the header of a Transport layer PDU? -destination IP address -cyclic redundancy check -source MAC address -window size -all of these

window size