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WorksheetsCisco - ITN7 - Module 4-7 Review
Total questions: 56
Worksheet time: 28mins
Which is the correct order for the OSI Model from top down?
Application, Presentation, Session, Transport, Network, Data Link, Physical
Presentation, Application, Session, Transport, Network, Data Link, Physical
Application, Presentation, Transport, Session, Network, Data Link, Physical
Presentation, Application, Transport, Session, Network, Data Link, Physical
Application, Presentation, Network, Session, Transport, Data Link, Physical
What type of network media would be used for an enterprise backbone?
Fiber
UTP
STP
Wireless
What type of network media would be used to connect desktop PCs to an office switch?
Fiber
UTP
STP
Wireless
If your throughput is lower than your bandwidth, what could be the cause?
The number of devices the data is travelling through
The type of cable being used
The encapsulation method being used
The header information on the frame
What is the delay of traffic across a network called?
latency
bandwidth
throughput
goodput
What are two characteristics of fiber cabling? (Choose two)
Not affected by EMI
Affected by EMI
Is more expensive than UTP
Contains four pairs in each cable
Has a foil shield to protect it
Which OSI layer creates the signals that represent bits?
Physical
Network
Transport
Data Link
In order to prevent the magnetic field that is created around wires from causing crosstalk, what is done with the wire?
Different rate of twist for each pair
Shielding around all of the pairs
Grounding one side of the wire
Nothing can be done, use fiber
What are two factors of interference for UTP cable? (Choose two)
crosstalk
electromagnetic interference
signal modulation interference
bandwidth
radio attenuation injection
What could cause interference with wireless communications? (Choose two)
microwaves
blu-ray players
baby monitors
home theaters
cell phones
What is the term for the capacity at which a medium can carry data?
bandwidth
throughput
goodput
IEEE
What is the term for how much data is transferred across a medium over a given period of time?
latency
bandwidth
throughput
goodput
Which physical medium uses electrical impulses to transmit data?
copper cable
fiber-optic cable
wireless
unladen swallow
Which physical medium uses light waves to transmit data?
copper cable
fiber-optic cable
wireless
unladen swallow
Which physical medium uses microwaves to transmit data?
copper cable
fiber-optic cable
wireless
unladen swallow
What is the term for how much useable data is transferred across a medium over a given period of time?
latency
bandwidth
throughput
goodput
What type of connector is used with UTP cable?
RJ-45
Straight Tip
Lucent
Subscriber
What type of fiber connector has a clip that must be pressed to disconnect it?
RJ-45
Straight Tip
Lucent
Subscriber
What is the IEEE standard for wireless LAN technology?
802.11
802.15
802.1
802.16
Which cable type will carry data up to 100Mbps?
Cat 3 UTP
Cat 5 UTP
Cat 6 UTP
Cat 7 UTP
Name two functions of the Data Link Layer. (Choose two)
Encapsulates packet data into Layer 2 frames.
Exchanges frames between endpoints over the network media.
Encapsulates segment data into Layer 3 frames.
Receives encapsulated Layer 3 packets to send up to the Transport Layer.
Ensures that only IPv4 packets are transmitted over the network.
LLC or MAC sublayer function?
Places information in the frame denoting which network layer protocol is being used.
LLC
MAC
LLC or MAC sublayer function?
Allows multiple Layer 3 protocols to use the same network interface and media.
LLC
MAC
LLC or MAC sublayer function?
Is responsible for data encapsulation and media access control.
LLC
MAC
LLC or MAC sublayer function?
Provides data link layer addressing.
LLC
MAC
LLC or MAC sublayer function?
Allows integration with various physical layer technologies.
LLC
MAC
What does the MAC sublayer provide with data encapsulation?
Error Detection
Encryption
Multiple Layer 3 protocol use
Segmenting of packets
LLC or MAC sublayer function?
Controls the NIC.
LLC
MAC
This WAN topology provides high availability by connecting every end system with every other end system.
Point-to Point
Hub and Spoke
Mesh
Partial Mesh
This WAN topology connects end systems to a central intermediate device which connects to other intermediate devices.
Point-to Point
Hub and Spoke
Mesh
Extended Star
This WAN topology connects branch sites to a central site. The branch sites cannot exchange data with other branch sites without going through the central site.
Point-to Point
Hub and Spoke
Partial Mesh
Extended Star
half-duplex or full duplex?
Does not require media arbitration.
half-duplex
full-duplex
half-duplex or full duplex?
Cannot transmit and receive at the same time.
half-duplex
full-duplex
half-duplex or full duplex?
Can transmit and receive at the same time.
half-duplex
full-duplex
CSMA/CD or CSMA/CA?
Listens first before transmitting.
CSMA/CD
CSMA/CA
CSMA/CD or CSMA/CA?
Does not detect collisions.
CSMA/CD
CSMA/CA
CSMA/CD or CSMA/CA?
Transmits the time duration it will need for a transmission.
CSMA/CD
CSMA/CA
Where is error detection located in the data link frame?
Header
Data
Trailer
No error detection is possible
When are Layer 2 physical addresses used?
On the same IP network
To traverse across multiple IP networks
To determine routing information
During segment encapsulation
Where is the CRC value, used for verifying integrity, located?
Frame Header
Data
Frame Trailer
Packet Header
If an Ethernet frame is received and it is less than 64 Bytes, what happens?
The frame is discarded
The frame is sent back to the source
The error correction increases the frame size to 64 Bytes
The frame is processed as usual
What is the auto-MDIX feature on a switch?
Automatic configuration for 10, 100, or 1000Mbs ports
Automatic configuration for straight through or crossover cables
Automatic configuration for half or full duplex operation
Automatic configuration for IP addressing a port
What is the destination MAC address for a frame leaving PC-A for PC-B
BB:BB:BB:BB:BB:BB
AA:AA:AA:AA:AA:AA
CC:CC:CC:CC:CC:CC
DD:DD:DD:DD:DD:DD
What type of memory buffering would be best if a Layer 2 switch is switching frames from an incoming 1000Mbps port to a 100Mbps port?
port-based
shared memory
fixed configuration
speed-based
What is an example of the cut-through switching method?
store-and-forward
fast-forward
CRC
QoS
Which frame forwarding method receives the entire frame and performs a CRC check to detect errors before forwarding the frame?
cut-through
store-and-forward
fragment-free
fast-forward
hat is the purpose of the FCS field in a frame?
to obtain the MAC address of the sending node
to verify the logical address of the sending node
to compute the CRC header for the data field
to determine if errors occurred in the transmission and reception
Which switching method has the lowest level of latency?
cut-through
store-and-forward
fragment-free
fast-forward
What would be one reason to use store-and-forward switching over cut-through switching method?
collision detection
error checking
faster frame forwarding
ability to use IPv4 or IPv6
What two items does a switch look at when a packet first arrives?
Source MAC address
Destination MAC address
Incoming port
Destination port
What does a switch use to build the MAC address table?
Source MAC
Destination MAC
Source IP
Destination IP
Which switching method may cause invalid frames to be forwarded?
Store-and-Forward
Cut-through
Keep-and-check
CRC
What will a switch do with a frame when the frame's destination MAC is in the MAC address table?
Update the MAC address table with the new destination.
Forward the frame out all ports except the one it arrived on.
Forward the frame out the specified port.
Change the destination IP address.
What will a switch do if it received a frame with the destination MAC address of FF:FF:FF:FF:FF:FF?
Forward the frame out all ports
Forward the frame out all ports except the one it came in on
Drop the frame
Send the frame to next hop router
What will a host do with a frame it receives with the destination MAC address of FF:FF:FF:FF:FF:FF?
Drop the frame
Process the frame
Reply to switch with its own MAC address
Return the frame to the switch
What will a host do with a frame it receives with a destination MAC address it does not recognize?
Drop the frame
Process the frame
Reply to switch with its own MAC address
Return the frame to the switch
