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