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Name a category of Ethernet cabling that supports speeds of 10Gbps.
A. Cat 6A
B. Cat 5E
C. Cat 5
D. Cat 4
Cat 6A
What is the speed of 1000Base-T?
A. 1 Mbps
B. 10Mbps
C. 100Mbps
D. 1000Mbps
1000Mbps
What are the two major categories of fiber-optic technology in network cables today?
A. Single-mode
B. Sonic Fiber
C. Multi-mode
D. Magnetic Fiber
Single-mode
Multi-mode
What is the benefit of PoE in a network?
A. PoE enables devices to project holograms for video conferencing, providing a 3D meeting experience.
B. PoE can be used to power and optimize coffee makers, making your morning brew faster and more efficient.
C. To provide power over the network cable for devices like VoIP phones, wireless access points, and IP video cameras
D. Power over Ethernet (PoE) allows network devices to release pleasant scents to create a calming workspace environment
To provide power over the network cable for devices like VoIP phones, wireless access points, and IP video cameras
What command allows you to quickly see the various errors that might have occured on Gi0/1 on a Cisco switch?
A. show errors on gi0/1
B. show interface gi0/1
C. list all issues gi0/1
D. check faults gi0/1
show interface gi0/1
What is the typical size of a giant frame in a Gigabit Ethernet data center?
A. more than 1518 bytes
B. less than 1518 bytes
C. exactly 1518 bytes
more than 1518 bytes
What is the typical size of a baby giant frame in a modern network?
A. More that 1600 bytes but less than 1700 bytes
B. More that 1518 bytes but less than 1600 bytes
C. More that 1400 bytes but less than 1500 bytes
D. More that 2000 bytes but less than 2100 bytes
More that 1518 bytes but less than 1600 bytes
Runt frames that are smaller than what size?
A. 104 bytes
B. 84 bytes
C. 94 bytes
D. 64 bytes
64 bytes
Name the two duplex options.
A. Single Duplex
B. Full-duplex
C. Half-duplex
D. Quantum Duplex
Full-duplex
Half-duplex
What is the speed of 10Base-T?
A. 1 Mbps
B. 10Mbps
C. 100Mbps
D. 1000Mbps
10Mbps
What is the speed of 100Base-T?
A. 1 Mbps
B. 10Mbps
C. 100Mbps
D. 1000Mbps
100Mbps
What is the speed of 1000Base-LX?
A. 1 Mbps
B. 10Mbps
C. 100Mbps
D. 1000Mbps
1000Mbps
What is the speed of 10GBase-T?
A. 1Gbps
B. 10Gbps
C. 100Gbps
D. 1000Gbps
10Gbps
What is the speed of 40GBase-LR4?
A. 4Gbps
B. 40Gbps
C. 400Gbps
D. 4000Gbps
40Gbps
A type of optical fiber designed for long-distance communication, allowing for higher bandwidth and longer transmission distances.
A. single-mode fiber
B. multi-mode fiber
single-mode fiber
A type of optical fiber that supports multiple light modes and is typically used for shorter distances due to higher signal attenuation.
A. single-mode fiber
B. multi-mode fiber
multi-mode fiber
What Cisco IOS command would you use to display information about the hardware interfaces and controllers on a router or switch?
A. show hardware
B. show interfaces
C. show controllers
D. show status
show controllers
What technology eliminates the major concerns about crossover versus straight through cables?
A. STP
B. RSTP
C. Auto MDI-X
D. FabricPath
Auto MDI-X
Which of the following is not an example of a question you might need to answer when provisioning a device with the correct serial cable?
A. Is the router being connected to a DTE or DCE device?
B. Is the port part of the chassis or is it modular?
C. Is a male or female connector required on the cable?
D. What signaling standard does the device require?
Is the port part of the chassis or is it modular?
What physical medium is used with 40GBASE-LR4?
A. Copper
B. Fiber
C. IR
D. radio frequency/radio waves
Fiber
In a properly designed switched network, what feature helps prevent collisions by queuing frames to avoid simultaneous transmission out of an interface?
A) Half-duplex networks
B) Redundant links
C) Full-duplex networks using intelligent switches
D) Broadcast domains
Full-duplex networks using intelligent switches
What is often the best way to catch network errors caused by issues such as electrical interference or a bad network interface card?
A) Rebooting the network device
B) Checking the frame check sequence (FCS)
C) Replacing the network cables
D) Updating the network firmware
Checking the frame check sequence (FCS)
Which Cisco IOS command would you use to display detailed information about the status, configuration, and statistics of the specific interface Gi0/0 on a router or switch?
A. show ip interface brief
B. show running-config interface Gi0/0
C. show interface Gi0/0
D. show ip route
show interface Gi0/0
What is a potential issue when an older device is hard coded to half-duplex and a LAN device is set to full-duplex in a network?
A) Increased network security
B) Enhanced data encryption
C) Duplex mismatch leading to intermittent packet loss
D) Faster data transmission rates
Duplex mismatch leading to intermittent packet loss
What issue can arise due to older equipment defaulting to a slower speed in a network?
A) Enhanced network security
B) Speed mismatch causing connectivity problems
C) Seamless operation at 1 Gbps
D) Increased data encryption
Speed mismatch causing connectivity problems
What are Ethernet frames that are less than 64 bytes and may be caused by excessive collisions called?
A) Giants
B) Runts
C) Jabbers
D) Fragments
Runts
What are Ethernet frames that are typically 9216 bytes for Gigabit Ethernet but can refer to anything over the standard IP MTU of 1500 bytes called?
A) Standard frames
B) Mini frames
C) Jumbo (or giant) frames
D) Micro frames
Jumbo (or giant) frames
What does "output hang" represent in networking terms?
A) The number of packets lost during transmission
B) The number of hours, minutes, and seconds since the interface was last reset due to a transmission taking too long
C) The total data transmitted in a given time period
D) The amount of time the network has been operational without issues
The number of hours, minutes, and seconds since the interface was last reset due to a transmission taking too long
What does "input drops" indicate in networking terms?
A) The total data transmitted on the network
B) The number of frames dropped on the input interface due to congestion
C) The time the network has been operational without issues
D) The number of errors detected in the transmitted frames
The number of frames dropped on the input interface due to congestion
What does "output drops" indicate in networking terms?
A) The total data transmitted on the network
B) The number of frames dropped on the output interface
C) The time the network has been operational without issues
D) The number of errors detected in the received frames
The number of frames dropped on the output interface
What does "No buffer" indicate in networking terms?
A) The time the network has been operational without issues
B) The number of frames dropped on the output interface
C) The number of input packets dropped due to a lack of available buffer space
D) The number of errors detected in the transmitted frames
The number of input packets dropped due to a lack of available buffer space
What does the term "Broadcasts" refer to in networking terms?
A) The number of unicast packets sent from the interface
B) The number of errors detected on the interface
C) The number of broadcasts received on the interface
D) The total data transmitted on the network
The number of broadcasts received on the interface
What does "Throttles" refer to in networking terms?
A) The number of errors detected on the interface
B) The number of times the local interface requested another local interface within the switch to slow down
C) The total data transmitted on the network
D) The number of broadcast packets received on the interface
The number of times the local interface requested another local interface within the switch to slow down
What do "Input errors" include in networking terms?
A) Only CRC errors
B) Only frame errors
C) A combination of no buffer, runt, giant, CRC, frame, overrun, ignored, and abort errors
D) Only ignored errors
A combination of no buffer, runt, giant, CRC, frame, overrun, ignored, and abort errors
What does a CRC error indicate in networking terms?
A) The success of the cyclic redundancy check on an input packet
B) The failure of the frame alignment on an output packet
C) The failure of the cyclic redundancy check on an input packet, detected via the FCS field in the Ethernet header
D) The success of the packet transmission without errors
The failure of the cyclic redundancy check on an input packet, detected via the FCS field in the Ethernet header
What does the term "Frame" refer to in the context of networking errors?
A) The number of frames received that exceeded the maximum transmission unit (MTU)
B) The number of frames received that did not end on an 8-bit byte boundary
C) The total data transmitted over the network
D) The number of successful packet transmissions
The number of frames received that did not end on an 8-bit byte boundary
What does "Overrun" refer to in networking terms?
A) The number of times data packets were retransmitted due to errors
B) The number of frames received that did not end on an 8-bit byte boundary
C) The number of times the receiver hardware was unable to transfer received data to a hardware buffer because the input rate exceeded the receiver's ability to process the data
D) The number of successful packet transmissions without delays
The number of times the receiver hardware was unable to transfer received data to a hardware buffer because the input rate exceeded the receiver's ability to process the data
What does "Ignored" refer to in networking terms?
A) The frames that were successfully transmitted without errors
B) The frames that were retransmitted due to collisions
C) The frames dropped because the interface hardware buffers ran low on internal buffer space
D) The frames that were dropped due to network congestion
The frames dropped because the interface hardware buffers ran low on internal buffer space
What does "Abort" refer to in networking terms?
A) The frames successfully transmitted without errors
B) An illegal sequence of 1 bit detected in a frame received
C) The number of frames dropped due to low buffer space
D) The total data transmitted over the network
An illegal sequence of 1 bit detected in a frame received
What does "Dribble condition detected" indicate in networking terms?
A) A frame that is too short and rejected
B) A dribble bit error, indicating that a frame is slightly too long, but still accepted
C) The total data transmitted over the network D) The frames that were dropped due to network congestion
A dribble bit error, indicating that a frame is slightly too long, but still accepted
What does "Underruns" refer to in networking terms?
A) The number of times the receiver hardware was unable to transfer data to a hardware buffer
B) The number of frames dropped due to low buffer space
C) The number of times the sender has been running faster than the switch can handle
D) The total data transmitted over the network
The number of times the sender has been running faster than the switch can handle
What does "Interface resets" indicate in networking terms?
A) The number of frames dropped due to network congestion
B) The number of times the interface was reset, usually due to missed keepalives from a neighboring device
C) The total data transmitted over the network
D) The frames received that did not end on an 8-bit byte boundary
The number of times the interface was reset, usually due to missed keepalives from a neighboring device
What does "Alignment errors" indicate in networking terms?
A) Misaligned network packet headers
B) Misaligned reads and writes
C) Errors in the Ethernet frame check sequence
D) Errors due to network congestion
Misaligned reads and writes
What does "Babbles" refer to in networking terms?
A) The number of frames dropped due to low buffer space
B) The number of broadcast packets received on the interface
C) The number of transmitted frames greater than 1518 bytes in size
D) The number of successful packet transmissions without errors
The number of transmitted frames greater than 1518 bytes in size
What does "Late collision" indicate in networking terms?
A) A collision detected before transmitting the first 64 bytes of the frame
B) A collision detected after transmitting the first 64 bytes of the frame
C) The number of frames dropped due to low buffer space
D) The total data transmitted over the network
A collision detected after transmitting the first 64 bytes of the frame
What does "Deferred" indicate in networking terms?
A) The number of frames dropped due to low buffer space
B) The number of frames transmitted successfully after waiting because the media was busy
C) The number of collisions detected on the network
D) The total data transmitted over the network
The number of frames transmitted successfully after waiting because the media was busy
What does "Lost carrier" indicate in networking terms?
A) The number of frames dropped due to low buffer space
B) The number of times the carrier was lost during transmission
C) The number of frames retransmitted due to collisions
D) The total data transmitted over the network
The number of times the carrier was lost during transmission
What does "No carrier" indicate in networking terms?
A) The number of frames dropped due to low buffer space
B) The number of times the carrier was not present during the transmission
C) The number of frames retransmitted due to collisions
D) The total data transmitted over the network
The number of times the carrier was not present during the transmission
What does "Output buffer failures" indicate in networking terms?
A) The number of frames dropped due to low buffer space
B) The number of frames retransmitted due to collisions
C) The number of times a frame was not output from the output hold queue because of a shortage of shared memory
D) The total data transmitted over the network
The number of times a frame was not output from the output hold queue because of a shortage of shared memory
What does "Output buffers swapped out" indicate in networking terms?
A) The number of frames dropped due to low buffer space
B) The number of frames retransmitted due to collisions
C) The number of frames stored in main memory when the output queue is full
D) The total data transmitted over the network
The number of frames stored in main memory when the output queue is full
What should you check for if counters related to FCS, CRC, alignment, or runts are incrementing?
A) Buffer overflow
B) Network congestion
C) Duplex mismatch
D) Hardware failure
Duplex mismatch
Which of the following is not a valid error typically seen in show interface output?
A. Babble
B. Late collision
C. Ignored
D. Trickle
Trickle
What counter increments if the number of frames transmitted is greater than 1518 bytes in size?
A. Babble
B. Late collision
C. Runt
D. Ignored
Babble
What technology attempts to dynamically resolve speed and duplex between two devices?
A. Negotiation
B. Autonegotiation
C. CDP
D. LLDP
Autonegotiation
What is the physical medium used by 802.3an?
A. Copper
B. Multimode fiber
C. Single-mode fiber
D. Wireless
Copper
If you are not using auto MDI-X on a Cisco switch, what type of cable is used to connect a Layer 2 switch’s port to a PC?
A. Crossover
B. Rollover
C. Console
D. Straight-through
Straight-through
What is the duplex setting used throughout a point-to-point Ethernet network?
A. Half-duplex
B. Full-duplex
C. Main duplex
D. Dual-duplex
Full-duplex
What was the original PoE standard designation?
A. 802.3bt
B. 802.3at
C. 802.3af
D. 802.3bu
802.3af
What command allows you to see what type of serial cable is connected to a device? \
A. show version
B. show controllers
C. show interface
D. show flash
show controllers
What type of cable is used to connect a switch to another switch?
A. Straight-through
B. Crossover
C. Null
D. Dual-band
Crossover
You are analyzing the frames sent and received over a Gigabit Ethernet connection, and you are surprised to see many frames that are approximately 9000 bytes in size. What is the term for these frames?
A. Error frames
B. Pico frames
C. Runts
D. Jumbo frames
Jumbo frames