Purpose
What is the main responsibility of the data link layer in the OSI model?
a) Routing data across networks
b) Providing network services to applications
c) Preparing network data for the physical network
d) Managing end-to-end communication
C
Which type of topology does the data link layer "see"?
a) Physical topology
b) Logical topology
c) Network topology
d) Application topology
B
Which of these is not a physical LAN topology?
a) Star
b) Bus
c) Ring
d) Mesh
D
What are the three basic parts of a data link layer frame?
a) Source, Destination, Protocol
b) Header, Data, Trailer
c) IP, TCP, UDP
d) Preamble, Data, Footer
B
In a contention-based multi-access network, how do devices transmit?
a) In full-duplex mode
b) In half-duplex mode
c) In simplex mode
d) Sequentially assigned slots
B
Which sublayer of the data link layer is responsible for addressing and error detection?
a) LLC
b) MAC
c) TCP
d) IP
B
Which of the following is a common WAN physical topology?
a) Mesh
b) Star
c) Bus
d) Ring
A
In full-duplex communication:
a) Data flows only one way
b) Devices send and receive simultaneously
c) Devices alternate sending and receiving
d) Data flows only via a central hub
B
What type of addressing is used by the data link layer?
a) Logical addresses (IP)
b) Domain names
c) Physical addresses (MAC)
d) Application addresses (URLs)
C
Which method is used for Ethernet LANs to handle simultaneous access?
a) CSMA/CA
b) CDMA
c) CSMA/CD
d) TDMA
C
Which organizations define open standards and protocols for the data link layer?
a) W3C, IETF, IEEE
b) IEEE, ITU, ISO, ANSI
c) ICANN, ISO, HTML
d) IEEE, ICANN, W3C, ANSI
B
Adding intermediate connections without changing the logical design affects which topology?
a) Logical topology
b) Application topology
c) Physical topology
d) Cloud topology
C
Which networks are examples of multi-access networks?
a) Ethernet LANs and WLANs
b) WANs and VPNs
c) Mesh and Bus networks
d) TCP/IP and UDP
A
Which of the following is a data link layer protocol?
a) TCP
b) UDP
c) PPP
d) HTTP
C
WLANs use which contention-based access method?
a) CSMA/CD
b) CSMA/CA
c) PPP
d) HDLC
B