قديم منذ /24-04-2018, 10:53 PM   #1

 
الصورة الرمزية A.Tareq
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مواضيعي | ردودي

 رقم العضوية : 10456
 تاريخ الإنتساب : Jul 2014
 مقر الإقامة : جدة
 فرع الجامعة : فرع جدة
 التخصص : بكالوريوس تقنية معلومات
 المستوى : المستوى الثامن
 المشاركات : 136
 الجنس : ذكر
 مستوى التقييم : A.Tareq is on a distinguished road
النقاط : 36

شكراً: 9
تم شكره 6 مرة في 4 مشاركة
افتراضي Quiz 2 -2018


Question 1
0.1 out of 0.1 points
Flow control is guaranteed to solve congestion problems.


Selected Answer:
Correct False
Answers:
True
Correct False
Question 2
0.1 out of 0.1 points
NAT is a short form/abbreviation for "Network Address Transmitter".

Selected Answer:
Correct False
Answers:
True
Correct False
Question 3
0.1 out of 0.1 points
Network layer was designed to provide a connectionless service in which the network-layer protocol treats each packet independently.


Selected Answer:
Correct True
Answers:
Correct True
False
Question 4
0.1 out of 0.1 points
In Stop-and-wait protocol there is flow control but error control is missing.

Selected Answer:
Correct False
Answers:
True
Correct False
Question 5
0.1 out of 0.1 points
The responsibility/responsibilities of ICANN include:


Selected Answer:
Correctd.
All of the above
Answers:
a.
Allocation of addresses

b.
Management of DNS
c.
Resolution of Domain Name disputes
Correctd.
All of the above
Question 6
0.1 out of 0.1 points
HUB is a _________ Device and Switch is a ________ Device.

Selected Answer:
Correcta.
Broadcast, Unicast

Answers:
Correcta.
Broadcast, Unicast

b.
Multicast, Unicast

c.
None of the above
d.
Unicast, Multicast

Question 7
0 out of 0.1 points
The Forwarding decision in a router when used in a virtual circuit network is based on port numbers.


Selected Answer:
Incorrect True
Answers:
True
Correct False
Question 8
0.1 out of 0.1 points
The resources needed for communication between end systems are reserved for the duration of session between end systems in:

Selected Answer:
Correctb.
Circuit switching
Answers:
a.
Packet switching
Correctb.
Circuit switching
c.
Line switching
d.
Frequency switching
Question 9
0.1 out of 0.1 points
The selective repeat approach requires that:


Selected Answer:
Correctb.
Sender maintains timer for each unacked packet

Answers:
a.
Receiver only sends cumulative acknowledgements
Correctb.
Sender maintains timer for each unacked packet

c.
Receiver acknowledges cumulative packets
d.
Both b and c are correct
Question 10
0 out of 0.1 points
If a router malfunctions, using Distance-Vector protocol:


Selected Answer:
Incorrecta.
Each node computes only its own table

Answers:
a.
Each node computes only its own table

b.
Corrective actions occur immediately to isolate the error
Correctc.
Node can advertise incorrect path cost
d.
None of the above
Question 11
0.1 out of 0.1 points
DHCP (dynamic host configuration protocol) provides _____ to the client.


Selected Answer:
Correctb.
IP Address
Answers:
a.
MAC Address
Correctb.
IP Address
c.
URL
d.
None of the above
Question 12
0.1 out of 0.1 points
The duty of the network layer includes: routing, forwarding and packetizing.


Selected Answer:
Correct True
Answers:
Correct True
False
Question 13
0.1 out of 0.1 points
If a router malfunctions, using Link-State protocol:


Selected Answer:
Correctd.
Both a and b are correct responses

Answers:
a.
Node can advertise incorrect link cost

b.
Each node computes only its own table

c.
Each node’s table used by others so error propagates through network

Correctd.
Both a and b are correct responses

Question 14
0.1 out of 0.1 points
A __________________ is a packet sent by a node to the source to inform it of congestion.


Selected Answer:
Correcta.
Choke packet
Answers:
Correcta.
Choke packet
b.
Backpressure packet


c.
LS packet


d.
Request packet
Question 15
0.1 out of 0.1 points
The reasons for handling routing differently in Inter-AS and Intra-AS routing are based on:


Selected Answer:
Correctc.
Policy, scale and performance
Answers:
a.
Differences in router capabilities
b.
Distance vector versus link state information
Correctc.
Policy, scale and performance
d.
Imposed standards for packaging messages








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