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WorksheetsIntroduction to Data-link Layer
Total questions: 31
Worksheet time: 16mins
The data-link layer and physical layer are territories of networks that when connected make up the _________
networking
internetting
Internet
connection
The data link layer needs to transmit to the next node in the network
packets
frames
data
bits
The Internet is a combination of networks glued together by __________
transmission media.
hubs and repeaters .
routers .
connecting devices .
Communication at the data-link layer is ___________
end-to-end
node-to-node
host-to-host
process-to-process
A data unit from one point in the Internet needs to pass through many ___________ to reach another point
internetworks
LANs
WANs
networks
LANs and WANs are connected by _________
switches
routers
hubs
gateways
It is customary to refer to the two end hosts and the routers as _________
source and destination
terminals
links
nodes
•These LANs and WANs are connected by routers. The networks in between are referred to as _________
hosts
terminals
links
nodes
The data-link layer provides services to the _________ layer
physical
transport
network
application
The data-link layer receives services from the _________ layer.
physical
application
network
transport
•The data-link layer of the sending node needs to _________ the datagram received from the network in a frame
decapsulate
encapsulate and decapsulate
capsulate
encapsulate
The data-link layer of the receiving node needs to _________ the datagram from the frame
encapsulate
capsulate
encapsulate and decapsulate
decapsulate
Each intermediate node needs to _________the packets passing thru it.
encapsulate
decapsulate
capsulate
encapsulate and decapsulate
The first service provided by the data-link layer is ________
encapsulating and/or decpsulating
error detection and/or correction
storing and/or queueing
framing
Different data-link layers have different ________ for framing
methods
technologies
formats
systems
Different data-link layers have different ________ for framing
methods
technologies
formats
systems
In data-link, the error needs first to be ________.
corrected
sent
detected
received
Most data-link-layer protocols do ________ use a congestion control to alleviate congestion
directly
sometimes
not directly
most of the times
The physical path between nodes is referred to as the _____
media
node
transmission line
link
The data link layer encapsulates this information (or packet) by placing a _________ around the data.
header
trailer
header or trailer
header and trailer
Information in the _________includes sending and receiving network interface card (NIC) addresses.
header
header and trailer
flag
trailer
Error checking information is also found in the frame ________.
header
trailer and header
trailer or header
trailer
The Data Link Layer passes the frame to the Physical Layer for transmission of a ________ across the link
signal stream
data stream
bit stream
packet
The _______ address contains the address of the next stop in the network
source
MAC
destination
port
The ________ address contains the address where the frame originated
source
NIC
destination
beginning
Frames are typically generated by ______
PORTs.
MACs.
NICs.
NETs.
________ is an ISO standard data-link protocol
SDLC
HDLC
FDDI
LAPD
_________ is an IBM data-link protocol
SDLC
HDLC
FDDI
LAPD
________ is the Data-link protocol used in Integrated Services Digital Networks
SDLC
HDLC
FDDI
LAPD
LAN data-link protocols is ________
Ethernet
FDDI
Token Ring
All of the choices
________ data-link protocols are Frame Relay and ISDN
LAN
MAN
WAN
PAN
