Examen cisco 9

Páginas: 5 (1190 palabras) Publicado: 17 de mayo de 2010
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Top of Form Which of the following describe interframe spacing? (Choose two.) |
| the minimum interval, measured in bit-times, that any station must wait before sending another frame |
| the maximum interval, measured in bit-times, that any station must wait before sending another frame |
| the 96-bit payload paddinginserted into a frame to achieve a legal frame size |
| the 96-bit frame padding transmitted between frames to achieve proper synchronization |
| the time allowed for slow stations to process a frame and prepare for the next frame |
| the maximum interval within which a station must send another frame to avoid being considered unreachable |
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2 |-------------------------------------------------
Top of Form What does the IEEE 802.2 standard represent in Ethernet technologies? |
| MAC sublayer |
| Physical layer |
| Logical Link Control sublayer |
| Network layer |
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3 | -------------------------------------------------
Top of Form Convert the binary number 10111010 into its hexadecimal equivalent. Select the correctanswer from the list below. |
| 85 |
| 90 |
| BA |
| A1 |
| B3 |
| 1C |
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4 | -------------------------------------------------
Top of Form

Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.) |
| A packet with the destination IP ofRouter_B. |
| A frame with the destination MAC address of Switch_A. |
| A packet with the destination IP of Router_A. |
| A frame with the destination MAC address of Router_A. |
| A packet with the destination IP of Server_B. |
| A frame with the destination MAC address of Server_B. |
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5 | -------------------------------------------------
Top of FormAfter an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data? |
| the device involved in the collision with the lowest MAC address |
| the device involved in the collision with the lowest IP address |
| any device in the collision domain whose backoff timer expires first |
| those that began transmitting at the same time |
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6 | -------------------------------------------------
Top of Form Ethernet operates at which layers of the OSI model? (Choose two.) |
| Network layer |
| Transport layer |
| Physical layer |
| Application layer |
| Session layer |
| Data-link layer |
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7 | -------------------------------------------------
Top of Form Host A has an IPaddress of 172.16.225.93, a mask of 255.255.248.0, and a default gateway of 172.16.224.1. Host A needs to send a packet to a new host whose IP is 172.16.231.78. Host A performs the ANDing operation on its address and subnet mask. What two things will occur? (Choose two.) |
| Host A will get a result of 172.16.224.0 from the AND process. |
| Host A will send on to the media a broadcast frame thatcontains the packet. |
| Host A will broadcast an ARP request for the MAC of the host 172.16.231.78. |
| Host A will change the destination IP of the packet to 172.16.224.1 and forward the packet. |
| Host A will encapsulate the packet in a frame with a destination MAC that is the MAC address associated with 172.16.224.1. |
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8 |-------------------------------------------------
Top of Form Which statements correctly describe MAC addresses? (Choose three.) |
| dynamically assigned |
| copied into RAM during system startup |
| layer 3 address |
| contains a 3 byte OUI |
| 6 bytes long |
| 32 bits long |
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9 | -------------------------------------------------
Top of Form What is the primary purpose of ARP?...
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