CCNA Semester 1 - Chapter 9 Review
- 1. Ethernet operates at two layers of the OSI model, the Data-Link Layer and the _____________ Layer.
A) transport
B) application
C) network
D) physical
- 2. "Interframe spacing" refers to the minimum interval, measured in bit-times, that any station must wait before sending another _____________.
A) radio wave
B) interrupt signal
C) frame
D) wireless wave
- 3. "Interframe spacing" also refers to the the time allowed for slow stations to process a frame and prepare for the next _______________.
A) wireless wave
B) frame
C) radio wave
D) interrupt signal
- 4. The 3 primary functions of DATA-LINK Layer encapsulation are: addressing, frame delimiting, and error _________________.
A) correction
B) detection
C) fragmentation
D) limitation
- 5. In a CSMA/CD network, if collisions occur, the hosts return to a listen-before-transmit ____________.
A) switch
B) server
C) mode
D) network
- 6. The Upper Data Link Sublayer has 3 primary roles: insulates the network layer protocols from changes in the physical equipment, makes the connection with the upper layers, and identifies the network layer ________________.
A) address
B) port
C) application
D) protocol
- 7. The LLC sublayer in Ethernet standards is represented by the _______________ 802.2 standard.
A) IEEE
B) IMG
C) ISO
D) Microsoft
- 8. Why would hosts on an Ethernet LAN experiencing a collision delay before sending another frame?
A) the tables aren't updated
B) to speed up the network
C) they can't help it, cheap devices
D) to avoid another collision
- 9. In an ETHERNET frame, there are three main parts: header, data, and trailer. The Data FIELD is really the encapsulated ______________ layer packet.
A) presentation
B) session
C) network
D) application
- 10. In a CSMA/CD LAN, increased collisions can decrease network _________________________.
A) expansion
B) performance
C) domains
D) collisions
- 11. Ethernet operates at which layer of the TCP/IP Network Model?
A) application
B) network access
C) transport
D) Internet
- 12. The primary responsibility of the ARP is to resolve IPv4 addresses to _______________ addresses.
A) super
B) MAC
C) street
D) house
- 13. MAC addresses are copied into RAM during system startup, they contain a 3-byte OUI, and they are ________ bytes long.
A) 6000
B) 6
C) 600
D) 600000
- 14. In Ethernet-based networks, Switches are preferred because they increase the throughput of data transfers, and ___________________ collisions.
A) duplicate
B) minimize
C) maximize
D) stop
- 15. In Ethernet networks the 2 most common media types are FIBER and copper-based __________.
A) radicalized signaling
B) wireless
C) UTP
D) STP
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