Tutorial $4$: Data Link Laver $($OSI Model$)$

Q$1.($a$)$ Give a term that related to upper sublayer of layer two and briefly describe that term.

$($b$)$ Identify a sublayer of Data Link Layer that defines the media access processes performed by the hardware.

$($c$)$ What are the TWO $(2)$ basic services of the Data Link Layer?

$($d$)$ There are two types of duplex communication: full$-$duplex $($FDX$)$ and half$-$duplex $($HDX$).$ Differentiate between these two communications.

Q$2.($a$)$ The Figure $2$ shows a network topology on how computers can communicate across LAN and WAN via different types of physical media and Layer $2$ protocols. Answer the following question based on the Figure $2.$

Figure $2$: Network Topology

$($i$)"$A$"$ and $"$B$"$ are two different popular network connection methods for LAN. Identify the type of connecting media and the IEEE Networking Standard of LAN $"$A$"$ and $"$B$"$ respectively.

$\backslash$table$[[$Label$,$Connecting media,IEEE Networking Standard$],[$LAN A$,,],[$LAN B$,,]]$

$($ii$)$ There are two types of access control method in LAN topology. Which access control method is used for LAN $"$A$"?$

$($iii$)$ Explain the types of access control method mentioned in Q$2($a$)($ii$).$

$($iv$)$ List the specific technology implements for the access control method mentioned in Q$2($a$)($ii$).$