Suppose application data of size X bytes is transmitted from system A to system
ID: 3805313 • Letter: S
Question
Suppose application data of size X bytes is transmitted from system A to system B via the OSI layers and that the encapsulation overhead at each layer is exactly 10 bytes. How many bytes will be received by the network layer at system B?
X bytes
X+10 bytes
X+20 bytes
X+30 bytes
X+40 bytes
X+50 bytes
X+60 bytes
What is produced by the deencapsulation of a frame?
Segment
Packet
Data segment
Bits at layer 0
The "twist" in a pair of wires inside a twisted pair cable accomplishes which of the following? select all that apply
Reduced crosstalk
Reduced rates of packet collisions
Higher bandwidth
Increased frequency spectrum
To obtain the OSI layer 2 address for a given OSI layer 3 address, which protocol is used?
ARP
RARP
DHCP
ICMP
Explanation / Answer
1. Suppose application data of size X bytes is transmitted from system A to system B via the OSI layers and that the encapsulation overhead at each layer is exactly 10 bytes. How many bytes will be received by the network layer at system B? X bytes X+10 bytes X+20 bytes X+30 bytes X+40 bytes X+50 bytes X+60 bytes Solution: X bytes . Because the overhead is removed during deencapsulation 2. What is produced by the deencapsulation of a frame? Segment Packet Data segment Bits at layer 0 Solution: Packet Packet : deencapsulation of a frame Segment : deencapsulation of a packet Data segment : Not relavant here Bits at layer 0 : produces frames(or encapsulation to a frame) 3. The "twist" in a pair of wires inside a twisted pair cable accomplishes which of the following? select all that apply Reduced crosstalk Reduced rates of packet collisions Higher bandwidth Increased frequency spectrum Solution: Reduced crosstalk 4. To obtain the OSI layer 2 address for a given OSI layer 3 address, which protocol is used? ARP RARP DHCP ICMP Solution: ARP ARP Reason: Address Resolution protocol that converts OSI layer 3 addresses to OSI layer 2 addresses RARP in not correct. Reason : Address Resolution protocol that converts OSI layer 2 addresses to OSI layer 3 addresses DHCP is not correct. Reason : Address Resolution protocol that converts OSI layer 2 addresses to OSI layer 3 addresses ICMP is not correct. Reason : Not Address Resolution protocol