Term
All ethernet versions use the same data frame formats with the same max PDU size so they can interoperate freely. Given this information and what you know of layered technologies which of the following statements is true?
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 compenent s 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 onle layer of the OSU model dont usually affect the operation of other layers
d. ethernet isnt considered a scalable technology |
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| The addition of information to a PDU as its passed from one layer to the next is called |
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| Layers acting as though they communicate directly with each other across the network are called |
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Definition
7. Application
6. Presentation
5. Session
4. Transport
3. Netwrok
2. Data link
1. Physical |
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Term
| Which OSI layer creates and processes frames? |
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| Which OSi layer handles flow control, data segmentation and reliability |
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| Which OSi layer governs how a NIC is attached to the network medium |
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Which OSI layer determines the route a packet takes from sender to receiver?
a. 7
b. 1
c. 3
d. 4 |
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| Which OSI layer is responsible for setting up, maintaining and ending information exchanges on a network? |
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Which of the following elements might the data link layer add to its PDU?
a. Physical address
b. logical address
c. Data
d. CRC |
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When and how many times is the CRC calculater?
a. once before transmission
b. once after receipt
c. twice - once before transmission and again on receipt
d. at the source and destination and at each intermediary device |
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Which layer of the OSI model does project 802 divide into two sublayers?
a. physical
b. data link
c. network
d. session |
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What are the names of the sublayers in project 802?
a. datalink control
b. logical link control (LLC)
c. CSMA/CD
d. Media access control (MAC) |
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| Which term refers to stripping header info as a PDU is passed from one layer to a higher layer? |
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| Which IEEE 802 standard applies to ethernet? |
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| Which IEEE 802 standard applies to wireless LANs? |
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| What is the name of the PDU at the transport layer? |
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| At which layer does the PDU contain sequence and acknowledgement numbers? |
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Which of the following is an example of software found at the application layer?
a. FTP
b. TCP
c. HTTP
d. ICMP |
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| At which data link sublayer does the physical address reside? |
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Definition
| MAC - media access control |
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Which of the following problems occur at the physical layer?
a. NIC driver problems
b. incorrect IP addresses
c. signal errors caused by noise
d. incorrect segment size |
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