Disclaimer: This questionnaires are just for revision purpose!
01. Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.
- 85
- 90
- BA
- A1
- B3
- 1C
- 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 padding inserted 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
- The hosts return to a listen-before-transmit mode.
- The hosts creating the collision have priority to send data.
- The hosts creating the collision retransmit the last 16 frames.
- The hosts extend their delay period to allow for rapid transmission.
- 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
- Collisions can decrease network performance.
- It is more complex than non-deterministic protocols.
- Deterministic media access protocols slow network performance.
- CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.
Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?- No collisions will occur on this link.
- Only one of the devices can transmit at a time.
- The switch will have priority for transmitting data.
- The devices will default back to half duplex if excessive collisions occur.
- A random delay is used to ensure a collision-free link.
- A random delay value for each device is assigned by the manufacturer.
- A standard delay value could not be agreed upon among networking device vendors.
- A random delay helps prevent the stations from experiencing another collision during the transmission.
08.
In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?- Host B can transmit immediately since it is connected on its own cable segment.
- Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
- Host B must send a request signal to Host A by transmitting an interframe gap.
- Host B must wait until it is certain that Host A has completed sending its frame.
09. Ethernet operates at which layers of the OSI model? (Choose two.)
- Network layer
- Transport layer
- Physical layer
- Application layer
- Session layer
- Data-link layer
- MAC sublayer
- Physical layer
- Logical Link Control sublayer
- Network layer
- dynamically assigned
- copied into RAM during system startup
- layer 3 address
- contains a 3 byte OUI
- 6 bytes long
- 32 bits long
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 of Router_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.
- 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 that contains 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.
- reduction in cross-talk
- minimizing of collisions
- support for UTP cabling
- division into broadcast domains
- increase in the throughput of communications
- application
- physical
- transport
- internet
- data link
- network access
- recognizes streams of bits
- identifies the network layer protocol
- makes the connection with the upper layers
- identifies the source and destination applications
- insulates network layer protocols from changes in physical equipment
- determines the source of a transmission when multiple devices are transmitting
- addressing
- error detection
- frame delimiting
- port identification
- path determination
- IP address resolution
- coaxial thicknet
- copper UTP
- coaxial thinnet
- optical fiber
- shielded twisted pair
Refer to the exhibit. Which option correctly identifies content that the frame data field may contain?- preamble and stop frame
- network layer packet
- physical addressing
- FCS and SoF
- translate URLs to IP addresses
- resolve IPv4 addresses to MAC addresses
- provide dynamic IP configuration to network devices
- convert internal private addresses to external public addresses
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