Intro to Networking Chapter 7 terms

Question 1

Layer 7

Answer 1

Application Layer

Question 2

Layer 6

Answer 2

Presentation Layer

Question 3

Layer 5

Answer 3

Session Layer

Question 4

Layer 4

Answer 4

Transport Layer

Question 5

Layer 3

Answer 5

Network Layer

Question 6

Layer 2

Answer 6

Data Link Layer

Question 7

Layer 1

Answer 7

Physical Layer

Question 8

Application, Presentation, and Session Layer

Answer 8

TCP/IP Application Layer

Question 9

Network Layer

Answer 9

TCP/IP Internetwork Layer

Question 10

Physical and Data Link Layer

Answer 10

TCP/IP Network Access Layer

Question 11

provides interfaces for applications to access network services, such as file sharing, message handling, and database access. It also handles error recovery for applications as needed. The PDU at this layer is called data

Answer 11

OSI Application Layer

Question 12

handles data formatting and translation. It also handles protocol conversion, data encryption and decryption, data compression and decompression, data representation incompatibilities between OSs, and graphics commands. The PDU at this layer is called data

Answer 12

OSI Presentation Layer

Question 13

permits two computers to hold ongoing communications across a network. It handles communication setup ahead of data transfers when necessary and ________ teardown. handles include name lookup and user logon and logoff. manages the mechanics of ongoing conversations, such as identifying which side can transmit data at what time, and for how long. Checkpointing is a synchronization process between two related streams of data, such as audio and video streams in a Web-conferencing application. PDU is called data

Answer 13

OSI Session Layer

Question 14

manages data transfer from one application to another across a network. It breaks long data streams into smaller chunks called “segments.” includes flow control and acknowledgments and handles resequencing segments into the original data on receipt. PDU is called segment

Answer 14

OSI Transport Layer

Question 15

handles logical addressing, translates logical network addresses (IP addresses) into physical addresses (MAC addresses), and performs best path selection and routing in an internetwork. provides access control. PDU is called a packet

Answer 15

OSI Network Layer

Question 16

works with frames and is the intermediary between the Network layer and Physical layer. It defines how computers access the network medium. MAC address is defined at this layer. contains the CRC error-checking code. The CRC value is recalculated on the receiving end. CRC is recalculated at every intermediary device. PDU is called Frame

Answer 16

OSI Data Link Layer

Question 17

convert bits into signals for outgoing messages and signals into bits for incoming messages. PDU is called Bits

Answer 17

OSI Physical Layer

Question 18

HTTP, FTP, SMTP, DHCP

Answer 18

Application Layer Protocols

Question 19

Redirectors

Answer 19

Presentation Layer Protocol

Question 20

DNS, authentication protocols

Answer 20

Session Layer Protocols

Question 21

TCP, UDP

Answer 21

Transport Layer Protocols

Question 22

IP, ICMP, ARP

Answer 22

Network Layer Protocols

Question 23

Ethernet, token ring, FDDI, NIC drivers

Answer 23

Data Link Layer Protocols

Question 24

802.1

Answer 24

Internetworking

Question 25

802.2

Answer 25

Logical Link Control

Question 26

802.3

Answer 26

Ethernet LAN

Question 27

802.11

Answer 27

Wireless Networks

Question 28

controls data-link communication and defines the use of logical interface points, called “service access points (SAPs),” that other computers can use to transfer information from this sublayer to the upper OSI layers

Answer 28

Link Logic Control (sublayer of data link)

Question 29

manages access to the physical medium and therefore communicates with the Physical layer. It communicates directly with a computer’s NIC and is responsible for physical addressing.

Answer 29

Media Access Control (sublayer of data link)