NEW
Font size
WorksheetsP2_INT_Chapter 6 - Test
Total questions: 25
Worksheet time: 21mins
Which statement describes a service provided by the data link layer?
It manages the access of frames to the network media.
It provides reliable delivery through link establishment and flow control.
It ensures that application data will be transmitted according to the prioritization.
It packages various Layer 3 PDUs into a frame format that is compatible with the network interface.
What is the function of the CRC value that is found in the FCS field of a frame?
to compute the checksum header for the data field in the frame
to verify the logical address in the frame
to verify the physical address in the frame
to verify the integrity of the received frame
What is contained in the trailer of a data-link frame?
logical address
physical address
error detection
data
Which statement describes a characteristic of the frame header fields of the data link layer?
They all include the flow control and logical connection fields.
Ethernet frame header fields contain Layer 3 source and destination addresses.
They include information on user applications.
They vary depending on protocols.
A network team is comparing physical WAN topologies for connecting remote sites to a headquarters building. Which topology provides high availability and connects some, but not all, remote sites?
mesh
hub and spoke
point-to-point
partial mesh
Which two fields or features does Ethernet examine to determine if a received frame is passed to the data link layer or discarded by the NIC?
auto-MDIX
Frame Check Sequence
CEF
minimum frame size
Frame Check Sequence
minimum frame size
minimum frame size
source MAC address
Which media communication type does not require media arbitration in the data link layer?
deterministic
half-duplex
controlled access
full-duplex
Which statement describes an extended star topology?
All end and intermediate devices are connected in a chain to each other.
Each end system is connected to its respective neighbor via an intermediate device.
End devices are connected together by a bus and each bus connects to a central intermediate device.
End devices connect to a central intermediate device, which in turn connects to other central intermediate devices.
What is a characteristic of the LLC sublayer?
It provides the logical addressing required that identifies the device.
It provides delimitation of data according to the physical signaling requirements of the medium.
It defines software processes that provide services to the physical layer.
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
What is a way that media access control is used in networking?
Contention-based access is also known as deterministic.
802.11 utilizes CSMA/CD.
Networks with controlled access have reduced performance due to data collisions.
Media access control provides the placement of data frames onto the media.
During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?
An IP address is added.
The physical address is added.
The logical address is added.
The process port number is added.
What three items are contained in an Ethernet header and trailer?
source IP address
source MAC address
destination IP address
source MAC address
destination IP address
destination MAC address
source MAC address
destination MAC address
error-checking information
What type of communication rule would best describe CSMA/CD?
access method
flow control
message encapsulation
message encoding
Which three basic parts are common to all frame types supported by the data link layer?
header
type field
MTU size
MTU size
data
trailer
trailer
data
header
Which statement is true about the CSMA/CD access method that is used in Ethernet?
When a device hears a carrier signal and transmits, a collision cannot occur.
A jamming signal causes only devices that caused the collision to execute a backoff algorithm.
All network devices must listen before transmitting.
Devices involved in a collision get priority to transmit after the backoff period.
Refer to the graphic. What type of cabling is shown?
STP
UTP
COAX
FIBER
Refer to the graphic. What type of cabling is shown?
STP
UTP
COAX
FIBER
What process involves placing one PDU inside of another PDU?
encapsulation
encoding
segmentation
flow control
Which PDU format is used when bits are received from the network medium by the NIC of a host?
file
frame
packet
segment
At which layer of the OSI model would a logical address be added during encapsulation?
physical layer
data link layer
network layer
transport layer
What is a characteristic of multicast messages?
They are sent to a select group of hosts.
They are sent to all hosts on a network.
They must be acknowledged.
They are sent to a single destination.
At which OSI layer is a source MAC address added to a PDU during the encapsulation process?
data link layer
application layer
transport layer
presentation layer
Which device performs the function of determining the path that messages should take through internetworks?
a router
a firewall
a web server
a DSL modem
Expand the network without degrading the service for existing users.
security
fault tolerance
scalability
Protect the network from unauthorized access
security
fault tolerance
scalability
