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Computer science

Total questions: 81

Worksheet time: 2hrs 9mins

Name
Class
Date
1.

Collection of devices connected with each other

a)

DTR

b)

Network

c)

SAN

d)

MAN

2.

Advantages of computer networks ?

a)

Simple

b)

Available

c)

Sharing of resources

d)

Centralized management

e)

High speed access

3.

All these networks depend on size except :

a)

LAN

b)

WAN

c)

MAN

d)

SAN

4.

All are disadvantage of Wan Network except;

a)

Congestion

b)

Wide area networks

c)

Security problems

d)

Error rate is maximum

5.

Is the collection of devices connected with each other

(a)  

6.

Is the number of devices are increased on a network without degrading at the performance;

(a)  

7.

Features of computer network (mention all the seven features with explanations )

4 lines
8.

Advantages and disadvantages of LAN network:

4 lines
9.

Advantages and disadvantages of MAN network:

4 lines
10.

Advantages and disadvantages of WAN network:

4 lines
11.

Advantages and disadvantages of SAN network:

4 lines
12.

True or false :

guided transmission medium contains of twisted pairs, coaxial cables, and fibers optic cable

a)

True

b)

False

13.

True or false :

UTP contains of shielded twisted pair

a)

True

b)

False

14.

True or false :

UTP consider flexible and cheap

a)

True

b)

False

15.

True or false :

STP contains of plastic cover and copper wires

a)

True

b)

False

16.

True or false :

STP need grounding and consider expensive

a)

True

b)

False

17.

Function of insulator in the coaxial cables ?

(a)  

18.

Name of connector that used in the coaxial cables?

(a)  

19.

What are the Advantages and disadvantages of coaxial cables ? Three for each

4 lines
20.

Write from what the fiber optics contains and with their function ?

4 lines
21.

DTR formula:

(a)  

22.

DTR means :

(a)  

23.

Differentiate between P2P and CS ? (write no more than four differences)

4 lines
24.

The practice of dividing a network into two or more networks is called

a)

Subnetting

b)

Host

c)

Logical subdivision

d)

Subnets

25.

True or false ;

Subnets is the process of taking bits from the host part of an IP address

in order to divide the larger network into smaller sub-networks

a)

True

b)

False

26.

Means from one point to one destination (one to one)

(a)  

27.

Means from one source to all possible destinations (one to all)

(a)  

28.

Means from one source to multiple destinations stating an interest

in receiving the traffic (one to many)

(a)  

29.

True or false ;

Data transported over a network by four simple methods ?

a)

True

b)

False

30.

True or false:

MAC address exists on the layer 3?

a)

True

b)

False

31.

True or false:

IP address called a physical address?

a)

True

b)

False

32.

True or false:

Network address design to be common identifier across the network

a)

True

b)

False

33.

Is an identifier for a node or a host on a computer network:

(a)  

34.

Mention the two types of IP addresses with explanations

4 lines
35.

MAC address is referred to :

  1. 1.

  2. 2.

  3. 3.

4 lines
36.

Write the advantages and disadvantages of BUS

4 lines
37.

Differentiate between point to point and multipoint

4 lines
38.

True or false:

In star topology every device is connected to central HUB using one single connection?

a)

True

b)

False

39.

All the following considered advantages of star topology except ;

a)

Easy to add or remove devices

b)

Centralized management

c)

Security

d)

Cheap

40.

True or false :

Tree topology can be only passive ?

a)

True

b)

False

41.

What are the advantages of tree topology? (Mention at least 2)

4 lines
42.

What are the disadvantages of BUS topology?(mention at least 2)

4 lines
43.

True or false

RING topology consider the most popular :

a)

True

b)

False

44.

True or false;

In Ring topology every system is connected to three other system side by side?

a)

True

b)

False

45.

Write the advantages and disadvantages of cellular topology?

4 lines
46.

Mention the networking devices (at least 3)

4 lines
47.

What does NIC mean?

(a)  

48.

NIC have MAC address with ;

a)

16 bits

b)

32 bits

c)

48 bits

d)

64 bits

49.

True or false

HUB is allows both wired and wireless networks?

a)

True

b)

False

50.

True or false :

Router consider the most intelligent devices?

a)

True

b)

False

51.

What does ISO means:

(a)  

52.

Write the main goal of OSI ?

4 lines
53.

What are the purpose of model?

4 lines
54.

True or false:

DLL deals with signal?

a)

True

b)

False

55.

True or false :

Repeaters is a device related to physical layer?

a)

True

b)

False

56.

True or false:

DLL deals with error control?

a)

True

b)

False

57.

The layer that is responsible for carrying packets between sources and destination:

a)

Network layer

b)

Physical layer

c)

DLL layer

d)

Transport layer

58.

True or false :

Transport layer make sure the data segment reach to the destination intact and in order ?

a)

True

b)

False

59.

Explain the data presentation of presentation layer?

4 lines
60.

What is the difference between data compression and data encryption?

4 lines
61.

"Just a sender" this sentence represents which of the following;

a)

Simplex

b)

Half duplex

c)

Full duplex

d)

Single duplex

62.

Mention the two types of network addressing ?

(a)  

63.

What is the difference between OSI and TCP/IP model?

4 lines
64.

What does IP address means?

(a)  

65.

What is the Function of IP address ?

4 lines
66.

What is the duty of ICMP ?

4 lines
67.

Mention 4 types of errors and explain them ?

4 lines
68.

Is used to find physical address if you have a logical address?

a)

IGMP

b)

ARP

c)

RARP

d)

ICMP

69.

What is the difference between TCP and UDP?

4 lines
70.

What does DNS means ;

(a)  

71.

Mention the four types of DNS servers?

4 lines
72.

How does DNS work ?

4 lines
73.

Mention four differences between LAN and VLAN;

4 lines
74.

FTP. means ?

(a)  

75.

What is the function of FTP?

4 lines
76.

Explain the model of FTP?

4 lines
77.

All the following are disadvantages of wireless network except

a)

Hackers

b)

Slow DTR

c)

Interference

d)

Expensive

78.

True or false;

ADHOC has easy setup and less security?

a)

True

b)

False

79.

What are the uses of network analyzer ? Mention at least three

4 lines
80.

What are the features of Network monitoring? Mention at least three

4 lines
81.

What does VPN mean?

(a)  

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