Computer Networks – CS610
Umair Mehmood – bc100202129
Question 1:- If a computer had a power failure during the transmission of packet, then ………….. will be missed & transmission will be ……………..
· Eot, complete
· Soh incomplete
· Soh, complete
· Eot, incomplete
Question 2:- For a twisted pair Ethernet, we use …….. connecter & the operation will be on …………… based network.
- RJ-45, Thinnet
- AUI, Thicknet
- RJ-45, 10BASE-T
- BNC, 10BASE-5
Question 3:- Bridges work on ……….. layer(s).
- Network
- Data Link
- Transport & Physical
- None of these
Question 4:- Networks are ………. By size.
Question 5:- Most frequently, the …….. pair is treated as just a single connection identifier by computers.
Question 6:- …….. program sends a message to a remote computer and reports whether the computer responds.
- PING
- Trace Route
- ICMP
- None of these
Question 7:- CRC uses two hardware components that are…………… & …………..
- Shift Registers & NOR Unit
- NAND Unit & XOR Unit
- Shift Register & XOR Unit
- None of these
Question 8:- In Direct point-to-point communication, numbers of connections of for all computers can be determined with …….
- N-1
- (N^2-N)/2
- N^2
- None of these
Question 9:- Most LANs that employ ring topology use an access mechanism known as ……
- CSMA/CD
- CSMA/CA
- TOKEN PASSING
- None of the given
Question 10:- Fiber distributed data interconnect (FDDI) uses fiber optics between stations and transmits data at ……..
- 10 million bits per second
- 1000 million bits per second
- 100 million bits per second
- 3 million bits per second
Question 11:- In which category the hardware manufacturer assigns permanent physical address to each network interface?
- Static Addressing
- Dynamic Addressing
- Configurable Addressing
- None of these
Question 12:- The Ethernet that uses thin coaxial cable wiring is called ………… & sometimes known as ………….
- Thicknet,10BASE-2
- Thinnet,10BASE-5
- Thinnet, 10BASE-2
- Thicknet, 10BASE-T
Question 13:- NIC contains sufficient hardware to process data independent of system CPU; in which some NICs contain separate ………….
- Memory
- Cache
- CPU
- Microprocessor
Question 14:- A system with redundant bridges might have a problem with ………. in the system.
- Loop
- Filters
- Spanning Trees
- All given choices
Question 15:- ……….. is used for typical data applications (where the data rate may be unknown and bursty) and allows use of whatever bandwidth is available at a given time.
Question 16:- ………… is used for audio and video, since these have predefined maximum data rates.
Question 17:- A network with throughput T and delay D has a total of ……….. bit in transit at any time.
- T / D
- T x D
- T + D
- None of the given
Question 18:- Delay among the packets can vary.
Question 19:- Dividing data into small packets allow……...
Question 20:- Formally named __________ informally known as the twisted pair Ethernet or TP Ethernet.
- 10Base-2
- 10Base-5
- 10Base-T
- None of the given
Question 21:- Describe the NIC’s functionality & responsibility. (2 marks)
Question 22:- Which attributes in ATM are used to make VPN? (2 marks)
Question 23:- Star organization is using four bridges in its network and they form a cycle. How can IT engineer avoid broadcasting from all bridge in this network? (3 marks)
Question 24:- A network admin continuously sending packets on a switch network. After some time, he faces a delay in his network. Identify the delay and write the mathematical equation. (3 marks)
Question 25:- There are two site officers A& B. Both are using VPN. If a user of other network wants to send some packets to A, then what will be the behavior of network A? How data can be protected in VPN? (5 marks)
Question 26:- In a single room computer lab, we have 8 computers. An I.T. officer wants to connect them with each other. Which Ethernet cable scheme will be used for this and why? (5 marks)
cs610_spring2012_midterm_paper_13-05-2012
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