![Cairo University Systems & Biomedical Dept. Fourth Year
Faculty of Engineering Oct 2017 Quiz 1
Networks 15 min
Choose the correct answer: [5 pt]
1. TCP provides the following services:
a. Unreliable transmission, congestion control and flow control
b. reliable transmission, congestion control and flow control
c. Reliable transmission and flow control
2. Store and forward:
a. entire packet must arrive at router before it can be transmitted on next link
b. packet must be transmitted and stored at output port
c. packets must be queued at router input before stored at output port
3. Asymmetric digital subscriber line technology uses the existing twisted-pair telephone lines
a. As dual path for voice and data transmission
b. To act as an Internet service provider
4. In packet-switching:
a. All packets share the media bandwidth.
b. Each packet transmitted at full link capacity
c. All packets share the sending time slot.
5. Instantaneous throughput:
a. rate at which bits transferred between sender/receiver at given point in time
b. rate at which bits transferred between sender/receiver for a period of time
c. rate at which bits transferred between sender/receiver during a session
Complete: [5 pts]
An example of guided media is ............. and unguided media is ...........
If the router buffer is full, then any more received packets will be ..............
Answer the following questions: Use illustrative GRAPHS
1. [9 pt.] a. What is the bottleneck link?
b. What are the different types of delays affecting the file transfer process?
c. A frame of length 1.6 kB is transmitted from host1 to host2 over a route that consists of
one router and two links of bandwidths 2MB and 4 MB. The total distance is 100 Km and
the speed of propagation is 2x108 m/sec. The nodal processing delay is 20 msec and there
is no queuing delay. Determine the total delay that will the frame undergo?](https://image.slidesharecdn.com/networksquiz1-17-200816111329/85/Networks-quiz-1-1-320.jpg)
![2. [6pt.] a- Discuss the OSI layers?
b- What are the principal responsibilities of each of these layers?
c- What are the modifications applied on the OSI model?
d- Describe the encapsulation process in TCP/IP model.](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Networks quiz #1
- 1. Cairo University Systems & Biomedical Dept. Fourth Year Faculty of Engineering Oct 2017 Quiz 1 Networks 15 min Choose the correct answer: [5 pt] 1. TCP provides the following services: a. Unreliable transmission, congestion control and flow control b. reliable transmission, congestion control and flow control c. Reliable transmission and flow control 2. Store and forward: a. entire packet must arrive at router before it can be transmitted on next link b. packet must be transmitted and stored at output port c. packets must be queued at router input before stored at output port 3. Asymmetric digital subscriber line technology uses the existing twisted-pair telephone lines a. As dual path for voice and data transmission b. To act as an Internet service provider 4. In packet-switching: a. All packets share the media bandwidth. b. Each packet transmitted at full link capacity c. All packets share the sending time slot. 5. Instantaneous throughput: a. rate at which bits transferred between sender/receiver at given point in time b. rate at which bits transferred between sender/receiver for a period of time c. rate at which bits transferred between sender/receiver during a session Complete: [5 pts] An example of guided media is ............. and unguided media is ........... If the router buffer is full, then any more received packets will be .............. Answer the following questions: Use illustrative GRAPHS 1. [9 pt.] a. What is the bottleneck link? b. What are the different types of delays affecting the file transfer process? c. A frame of length 1.6 kB is transmitted from host1 to host2 over a route that consists of one router and two links of bandwidths 2MB and 4 MB. The total distance is 100 Km and the speed of propagation is 2x108 m/sec. The nodal processing delay is 20 msec and there is no queuing delay. Determine the total delay that will the frame undergo?
- 2. 2. [6pt.] a- Discuss the OSI layers? b- What are the principal responsibilities of each of these layers? c- What are the modifications applied on the OSI model? d- Describe the encapsulation process in TCP/IP model.