2
Module 1-4 Cisco Exam with verified detailed || || || || || || ||
solutions
If one end of an Ethernet connection is configured for full duplex and the other end of the
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connection is configured for half duplex, where would late collisions be observed?
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A: on both ends of the connection
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B: only on serial interfaces
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C: on the half-duplex end of the connection
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D: on the full-duplex end of the connection - ✔✔C
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Which command is used to set the BOOT environment variable that defines where to find the IOS
|| || || || || || || || || || || || || || || ||
image file on a switch?
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A: boot system
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B: boot loader
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C: confreg||
D: config-register - ✔✔A
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After which step of the switch bootup sequence is the boot loader executed?
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A: after IOS localization
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B: after flash file system initialization
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C: after CPU initialization
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D: after POST execution - ✔✔D
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Which impact does adding a Layer 2 switch have on a network?
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A: an increase in the number of network collisions
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B: an increase in the size of the collision domain
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C: an increase in the size of the broadcast domain
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, 2
D: an increase in the number of dropped frames - ✔✔C
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Which characteristic describes cut-through switching?
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A; Buffering is used to support different Ethernet speeds.
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B: Frames are forwarded without any error checking.
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C: Error-free fragments are forwarded, so switching occurs with lower latency.
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D: Only outgoing frames are checked for errors. - ✔✔B
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What is the significant difference between a hub and a Layer 2 LAN switch?
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A: A hub divides collision domains, and a switch divides broadcast domains.
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B: Each port of a hub is a collision domain, and each port of a switch is a broadcast domain.
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C; A hub extends a collision domain, and a switch divides collision domains.
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D: A hub forwards frames, and a switch forwards only packets. - ✔✔C
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How do switch buffers affect network performance?
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They provide extra memory for a particular port if autonegotiation of speed or duplex fails.
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They provide error checking on the data received.
|| || || || || || ||
They store frames received, thus preventing premature frame discarding when network
|| || || || || || || || || || ||
congestion occurs. ||
They hold data temporarily when a collision occurs until normal data transmission resumes. -
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✔✔D
Which switch characteristic helps keep traffic local and alleviates network congestion?
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A; large frame buffers
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B: fast internal switching
|| || ||
C: high port density
|| || ||
D: fast port speed - ✔✔C
|| || || || ||
Module 1-4 Cisco Exam with verified detailed || || || || || || ||
solutions
If one end of an Ethernet connection is configured for full duplex and the other end of the
|| || || || || || || || || || || || || || || || || ||
connection is configured for half duplex, where would late collisions be observed?
|| || || || || || || || || || ||
A: on both ends of the connection
|| || || || || ||
B: only on serial interfaces
|| || || ||
C: on the half-duplex end of the connection
|| || || || || || ||
D: on the full-duplex end of the connection - ✔✔C
|| || || || || || || || ||
Which command is used to set the BOOT environment variable that defines where to find the IOS
|| || || || || || || || || || || || || || || ||
image file on a switch?
|| || || || ||
A: boot system
|| ||
B: boot loader
|| ||
C: confreg||
D: config-register - ✔✔A
|| || ||
After which step of the switch bootup sequence is the boot loader executed?
|| || || || || || || || || || || ||
A: after IOS localization
|| || ||
B: after flash file system initialization
|| || || || ||
C: after CPU initialization
|| || ||
D: after POST execution - ✔✔D
|| || || || ||
Which impact does adding a Layer 2 switch have on a network?
|| || || || || || || || || || ||
A: an increase in the number of network collisions
|| || || || || || || ||
B: an increase in the size of the collision domain
|| || || || || || || || ||
C: an increase in the size of the broadcast domain
|| || || || || || || || ||
, 2
D: an increase in the number of dropped frames - ✔✔C
|| || || || || || || || || ||
Which characteristic describes cut-through switching?
|| || || ||
A; Buffering is used to support different Ethernet speeds.
|| || || || || || || ||
B: Frames are forwarded without any error checking.
|| || || || || || ||
C: Error-free fragments are forwarded, so switching occurs with lower latency.
|| || || || || || || || || ||
D: Only outgoing frames are checked for errors. - ✔✔B
|| || || || || || || || ||
What is the significant difference between a hub and a Layer 2 LAN switch?
|| || || || || || || || || || || || ||
A: A hub divides collision domains, and a switch divides broadcast domains.
|| || || || || || || || || || ||
B: Each port of a hub is a collision domain, and each port of a switch is a broadcast domain.
|| || || || || || || || || || || || || || || || || || ||
C; A hub extends a collision domain, and a switch divides collision domains.
|| || || || || || || || || || || ||
D: A hub forwards frames, and a switch forwards only packets. - ✔✔C
|| || || || || || || || || || || ||
How do switch buffers affect network performance?
|| || || || || ||
They provide extra memory for a particular port if autonegotiation of speed or duplex fails.
|| || || || || || || || || || || || || ||
They provide error checking on the data received.
|| || || || || || ||
They store frames received, thus preventing premature frame discarding when network
|| || || || || || || || || || ||
congestion occurs. ||
They hold data temporarily when a collision occurs until normal data transmission resumes. -
|| || || || || || || || || || || || || ||
✔✔D
Which switch characteristic helps keep traffic local and alleviates network congestion?
|| || || || || || || || || ||
A; large frame buffers
|| || ||
B: fast internal switching
|| || ||
C: high port density
|| || ||
D: fast port speed - ✔✔C
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