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Final Exam Theory Questions

Total questions: 153

Worksheet time: 2hrs 47mins

Name
Class
Date
1.

In TCP/IP model, which of the following information belongs to the Data link layer?

a)

Logical address

b)

Port number

c)

MAC address

d)

IP address

2.

The correct order of layers in TCP/IP model is...

a)

Physical layer, Network layer, Data Link layer, Transport layer, Application layer

b)

Physical layer, Data Link layer, Network layer, Application layer, Transport layer

c)

Physical layer, Data Link layer, Transport layer, Network layer, Application layer

d)

Physical layer, Data Link layer, Network layer, Transport layer, Application layer

3.

In TCP, the receiver merges the data based on...

a)

Acknowledgement number

b)

Port number

c)

Sequence number

d)

Arriving order

4.

In TCP/IP model, which of the following information belongs to the Network layer?

a)

Port number

b)

IP address

c)

Physical address

d)

MAC address

5.

Which of the following systems provides circuit switching service?

a)

telephone system

b)

postal system

6.

What is a correct netmask for a class C network?

a)

255.0.0.0

b)

0.0.0.255

c)

255.255.0.0

d)

255.255.255.0

7.

In UDP, the receiver merges the data based on...

a)

Arriving order

b)

Acknowledgement number

c)

Port number

d)

Sequence number

8.

Which of the following services is connection-oriented?

a)

UDP

b)

TCP

9.

In TCP/IP model, which of the following information belongs to the Transport layer?

a)

Physical address

b)

IP address

c)

MAC address

d)

Port number

10.

What application layer protocol is commonly used to support for file transfers between a client and a server?

a)

Telnet

b)

HTTP

c)

HTML

d)

FTP

11.

Which of the following protocols is used as inter-AS routing?

a)

PGP

b)

RIP

c)

OSPF

d)

BGP

12.

On which of the following protocols in Transport layer is SNMP (Simple Network Management Protocol) based?

a)

UDP

b)

TCP

13.

What is the automated service that matches resource names with the required IP address?

a)

SSH

b)

DNS

c)

HTTP

d)

Telnet

14.

Internet-like networks within an enterprise:

a)

Intranets

b)

Switching alternating

c)

Extranets

d)

Inter organizational networks

15.

On which layer does FTP work?

a)

Data Link layer

b)

Application layer

c)

Transport layer

d)

Network layer

16.

What is the first byte range of a class A network address?

a)

0 - 127

b)

192 - 223

c)

1 - 127

d)

128 - 191

17.

In TCP/IP model, host-to-host delivery is in...

a)

Data Link layer

b)

Network layer

c)

Transport layer

d)

Physical layer

18.

What is default port of SMTP service?

a)

80

b)

53

c)

25

d)

110

19.

If you ping fit.hanu.vn first time, where is the first place that your computer send the request?

a)

Application server

b)

Web server

c)

DHCP server

d)

DNS server

20.

Which of the following commands on Windows is used to test reachability of a remote host and show (the part of) the list of intermediary hops?

a)

tracert

b)

nslookup

c)

ping

d)

nmap

21.

What is the socket address?

a)

Port number

b)

IP address + Port number

c)

IP address

d)

MAC address + Port number

22.

Which of the following protocols uses distance vector routing algorithm?

a)

OSPF

b)

RIP

c)

EGP

d)

BGP

23.

When you ping the loopback address, where is a packet sent?

a)

Across the wire

b)

On the network

c)

Through the loopback dongle

d)

Down through the layers of the IP architecture and then up the layers again

24.

Which of the following is used to show IP address of a host in Windows operating system?

a)

ipconfigure

b)

ifconfigure

c)

ifconfig

d)

ipconfig

25.

How to establish a TCP connection?

a)

4-way handshake occurs

b)

5-way handshake occurs

c)

3-way handshake occurs

d)

2-way handshake occurs

26.

On Windows Server network operating system, what is often used to implement and administer some network services like web server, email server, FTP server?

a)

MMC (Microsoft Management Console)

b)

IIS (Internet Information Services)

c)

Hyper-V

d)

Active Directory

27.

Router command to go to the global configuration mode to modify the running configuration manually from the terminal:

4 lines
28.

What is the command to show IP routing table?

4 lines
29.

In which layer does repeater work?

a)

Physical layer

b)

Data Link layer

c)

Network layer

d)

Transport layer

30.

How many fields are there in a header of IPv4 packet?

a)

16

b)

15

c)

13

d)

10

31.

Which of the following systems provides packet switching service?

a)

postal system

b)

telephone system

32.

What part of 192.168.10.51 is the Network ID, assuming a default subnet mask?

a)

192.168.10

b)

51

c)

192

d)

0.0.0.5

33.

Which of the following device is mainly designed to work at Data link layer?

a)

Switch

b)

Router

c)

Bridge

d)

Hub

34.

Router command to set password "fithanu" to access privilege mode:

4 lines
35.

The communication mode that supports two-way traffic but only one direction at a time is...

a)

half duplex

b)

simplex

c)

duplex

d)

multiplex

36.

In TCP/IP model, process-to-process delivery is in...

a)

Data Link layer

b)

Transport layer

c)

Network layer

d)

Physical layer

37.

What can greatly reduce IP address configuration problems?

a)

DHCP Server

b)

WINS Server

c)

FTP Server

d)

DNS Server

38.

Netmask is used to determine:

a)

An IP address is in the subnet

b)

An IP address is a server

c)

An IP address is a gateway

d)

An IP address is a DNS

39.

Which layer of OSI determines the interface of the system with the user?

a)

Application layer

b)

Network layer

c)

Session layer

d)

Data Link layer

40.

What is default port of HTTP service?

a)

53

b)

22

c)

80

d)

110

41.

In VMware, ___________ configures your virtual machine to connect directly to the physical network.

4 lines
42.

You are working with three networks that have the network IDs 192.168.5.0, 192.168.6.0, and 192.168.7.0. What subnet mask can you use to

4 lines
43.

Which of the following layer protocols (TCP/IP model) are responsible for user and the application program support such as passwords, resource sharing, file transfer and network management?

a)

Layer 4 protocols

b)

Layer 2 protocols

c)

Layer 5 protocols

d)

Layer 3 protocols

44.

In Wireshark, write the Capture Filter to capture only http and dns packets:

4 lines
45.

What can be identified by examining the network layer header?

a)

The destination host address

b)

The bits that will be transferred over the media

c)

The source application or process creating the data

d)

The destination device on the local media

46.

Which of the following is used to show IP address of a host in Linux operating system?

a)

ipconfigure

b)

ifconfigure

c)

ipconfig

d)

ifconfig

47.

You have a class A network address 10.0.0.0 with 40 subnets, but are required to add 60 new subnets very soon. You would like to still allow for the largest possible number of host IDs per subnet. Which subnet mask should you assign?

a)

255.240.0.0

b)

255.254.0.0

c)

255.248.0.0

d)

255.252.0.0

48.

What is the command to set up static routing in Packet tracer?

a)

ip route ...

b)

network ...

c)

router ...

d)

ip address ...

49.

What is the first byte range of a class B network address?

a)

128 - 191

b)

1 - 126

c)

192 - 223

d)

0 - 127

50.

On which of the following protocols in Transport layer is FTP (File Transfer Protocol) mainly based?

a)

TCP

b)

UDP

51.

Which of the following device is mainly designed to work at Network layer?

a)

Repeater

b)

Router

c)

Hub

d)

Bridge

52.

A distributed network configuration in which all data/information pass through a central computer is...

a)

Ring network

b)

Bus network

c)

Point-to-point network

d)

Star network

53.

What is the automated service that matches resource names with the required IP address?

a)

Telnet

b)

SSH

c)

DNS

d)

HTTP

54.

How many fields are there in a header of IPv6 packet?

a)

7

b)

5

c)

9

d)

12

55.

What is a correct netmask for a class A network?

a)

255.255.0.0

b)

0.0.0.255

c)

255.255.255.0

d)

255.0.0.0

56.

How many bits are there in an IPv6 network address?

a)

128

b)

16

c)

32

d)

64

57.

What is a correct netmask for subnet 192.168.100.128/25?

a)

255.255.255.0

b)

255.255.255.128

c)

255.255.255.192

d)

255.255.255.250

58.

Run command "ping 10.0.0.2", which of the following result shows the host 10.0.0.2 is reachable?

a)

Reply from 10.0.0.2: bytes=32 time<1ms TTL=64

b)

Default Gateway . . . . . . . . . : 10.0.0.2

c)

TCP localhost:4078 10.0.0.2:80 ESTABLISHED

d)

IP Address . . . . . . . . . : 10.0.0.2

59.

What is the subnet mask for 10.20.136.0/21?

4 lines
60.

Which of the following describes the function of a WAN?

a)

provides connectivity on a LAN

b)

connects peripherals in a single location

c)

connects multiple networks in a single building

d)

provides connectivity over a large geographic area

61.

Which of the following commands is used to test reachability of a remote host?

a)

ping

b)

tracert

c)

nmap

d)

nslookup

62.

Which of the following TCP/IP protocol is used for transferring electronic mail messages from one machine to another?

a)

SNMP

b)

SMTP

c)

OSPF

d)

FTP

63.

Which of the following is the address of the router?

a)

The default gateway

b)

The IP address

c)

The subnet mask

d)

The TCP address

64.

What application layer protocol is commonly used to support for file transfers between a client and a server?

a)

Telnet

b)

HTML

c)

FTP

d)

HTTP

65.

Which of the following statements are correct about RIP?

a)

uses a multicast address to update other routers every 90 seconds

b)

will send out an update if there is a failure of a link

c)

uses a broadcast to update all other routers in the network every 60 seconds

d)

updates only contain information about routes that have changed since last update

66.

What is default port of POP3 service?

a)

25

b)

53

c)

80

d)

110

67.

Which type of cable is often used to connect a computer and a switch?

a)

Straight-through cable

b)

Optical fiber cable

c)

Cross-over cable

d)

Coaxial cable

68.

How many IPs can be used to assign to destop PCs in subnet 192.168.5.0/29?

a)

14

b)

6

c)

2

d)

8

69.

You are working with a network that has the network ID 192.168.10.0. What subnet should you use that supports up to 25 hosts and a maximum number of subnets?

4 lines
70.

What does VLAN stand for?

a)

Virtual LAN

b)

Variable LAN

c)

Vector LAN

d)

Video LAN

71.

__________ is a security scanner used to discover computers and services on a computer network.

a)

ping

b)

netstat

c)

tracert

d)

nmap

72.

__________ displays network connections (both incoming and outgoing), routing tables, and a number of network interface statistics.

a)

nmap

b)

tracert

c)

netstat

d)

DNS

73.

In VMware, __________ configures your virtual machine to share the IP and MAC addresses of the host.

a)

Bridge networking

b)

Custom networking

c)

NAT

d)

Host-only networking

74.

What is a correct netmask for subnet 192.168.100.128/29?

a)

255.255.255.224

b)

255.255.255.240

c)

255.255.255.248

d)

255.255.255.252

75.

Which type of cable is often used to connect a router and a switch?

a)

Straight-through cable

b)

Coaxial cable

c)

Cross-over cable

d)

Optical fiber cable

76.

Which address is the loopback address?

a)

255.255.255.255

b)

127.0.0.1

c)

127.0.0.0

d)

0.0.0.1

77.

What is the first byte range of a class C network address?

a)

0 - 127

b)

1 - 126

c)

128 - 191

d)

192 - 223

78.

How far can a twisted pair cable be extended?

a)

100km

b)

50km

c)

100m

d)

5km

79.

What is the command to restart Apache2 web server on Ubuntu Linux?

a)

sudo /etc/init.d/apache2 restart

b)

su /etc/init.d/apache2 restart

c)

sudo /etc/init.d

80.

What is the command to restart Apache2 web server on Ubuntu Linux?

a)

sudo /etc/init.d/apache2 restart

b)

su /etc/init.d/apache2 restart

c)

sudo /etc/init.d/apache2 start

d)

su /etc/init.d/apache2 start

81.

What is a correct netmask for subnet 192.168.100.128/26?

a)

255.255.255.0

b)

255.255.255.192

c)

255.255.255.224

d)

255.255.255.128

82.

What is default port of FTP service?

a)

21

b)

53

c)

25

d)

80

83.

What is default port of DNS service?

a)

20

b)

22

c)

53

d)

21

84.

Router command to change Router's name to FIT-HANU:

4 lines
85.

Which of the following services is connection-oriented?

a)

UDP

b)

TCP

86.

What is the purpose of the TTL field in the IP header?

a)

limits the time or hops that a packet can traverse through the network before it should be discarded

b)

used to mark routes as unreachable in updates sent to other routers

c)

defines a maximum metric value for each distance vector routing protocol by setting a maximum hop count

d)

prevents a router from advertising a network through the interface from which the update came

e)

prevents regular update messages from reinstating a route that may have gone bad

87.

The purpose of this equipment is to convert analog signals into digital signals and vice versa to be transmitted over a computer network.

a)

Repeater

b)

Hub

c)

Switch

d)

Modem

88.

In UDP, the receiver merges the data based on...

a)

Sequence number

b)

Port number

c)

Acknowledgement number

d)

Arriving order

89.

Which of the following protocols is used as inter-AS routing?

a)

OSPF

b)

RIP

c)

PGP

d)

BGP

90.

Proxy servers work on ____________ of the OSI model.

a)

Data Link layer

b)

Application layer

c)

Network layer

d)

Transport layer

91.

Which of the following commands is used to download and install DHCP server (dhcp3-server) on Ubuntu Linux?

a)

sudo apt-get install dhcp3-server

b)

sudo /etc/init.d/ dhcp3-server start

c)

sudo app-get install dhcp3-server

d)

sudo get install dhcp3-server

92.

What is a correct netmask for a class C network?

a)

255.255.0.0

b)

255.255.255.0

c)

255.0.0.0

d)

0.0.0.255

93.

How many IPs can be used to assign to desktop PCs in subnet 192.168.5.0/30?

a)

2

b)

4

c)

8

d)

6

94.

Intranets and extranets can use their network fire walls and other security features to establish secure Internet links within an enterprise or with its trading partners. Select the best fit for answer:

a)

Network Operating System

b)

Virtual Private Network

c)

Network Server

d)

OSI

95.

Given this network: 204.15.5.0/26. How many hosts are available for this network?

a)

60

b)

62

c)

44

d)

30

96.

What is a correct netmask for subnet 192.168.100.128/30?

a)

255.255.255.248

b)

255.255.255.252

c)

255.255.255.224

d)

255.255.255.240

97.

The correct order of layers in OSI model is...

a)

Physical layer, Network layer, Data Link layer, Session layer, Transport layer, Presentation layer, Application layer

b)

Physical layer, Data Link layer, Network layer, Presentation layer, Application layer, Session Layer, Transport layer

c)

Physical layer, Data Link layer, Network layer, Transport layer, Session layer, Presentation layer Application layer

d)

Physical layer, Session layer, Data Link layer, Transport layer, Presentation, Network layer, Application layer

98.

What is default port of IMAP service?

a)

443

b)

110

c)

80

d)

143

99.

ICMP (Internet Control Message Protocol) is...

a)

a protocol that handles error and control messages

b)

a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address

c)

a protocol used to monitor computers

d)

a TCP/IP high level protocol for transferring files from one machine to another

100.

What is default port of Telnet service?

a)

23

b)

53

c)

22

d)

21

101.

Identify the odd term amongst the following group:

4 lines
102.

What is default port of HTTPS service?

a)

443

b)

80

c)

110

d)

143

103.

Which type of cable is often used to connect 2 routers together?

a)

Coaxial cable

b)

Straight-through cable

c)

Cross-over cable

d)

Optical fiber cable

104.

In TCP/IP model, which of the following information belongs to the Transport layer?

a)

IP address

b)

Port number

c)

MAC address

d)

Physical address

105.

What is a correct netmask for subnet 192.168.100.128/27?

a)

255.255.0.0

b)

255.255.255.224

c)

255.255.255.128

d)

255.255.255.240

106.

Non adaptive algorithm is used in...

a)

Link state routing protocols

b)

Dynamic routing protocols

c)

Static routing protocols

d)

Distance vector routing protocols

107.

Which of the following services is connectionless?

a)

TCP

b)

UDP

108.

Which of the following protocols uses link state routing algorithm?

a)

RIP

b)

OSPF(IS-IS)

c)

BGP

109.

In VMware, ___________ configures your virtual machine to share the IP and MAC addresses of the host.

a)

Bridge networking

b)

Custom networking

c)

Host-only networking

d)

NAT

110.

What is the address range of a class C network address?

a)

0 - 127

b)

1 - 126

c)

128 - 191

d)

192 - 233

111.

In TCP/IP model, which header is added to the application data first?

a)

physical layer header

b)

data link layer header

c)

network layer header

d)

transport layer header

112.

What is a correct netmask for a class B network?

a)

255.0.0.0

b)

255.255.0.0

c)

255.255.255.0

d)

255.255.255.255

113.

Which of the following commands shows the path from local host to a remote host?

a)

ipconfig

b)

ping

c)

nmap

d)

tracert

114.

How many IP can be used to assign to destop PC in subnet 192.168.5.0/30?

a)

2

b)

4

c)

6

d)

8

115.

Which of the following is used to show IP addess in Windows operating system?

a)

ifconfigure

b)

ipconfigure

c)

ifconfig

d)

ipconfig

116.

What is the subnet mask of this network: 172.16.0.0/26?

a)

255.255.255.252

b)

255.255.248.0

c)

255.255.252.0

d)

255.255.255.192

e)

255.255.254.0

117.

Which network topology allows all traffic to flow through a central hub?

a)

hybrid

b)

ring

c)

star

d)

bus

e)

Mesh

118.

The slowest transmission speeds are those of...

a)

fiber-optic cable

b)

microwaves

c)

coaxial cable

d)

twisted-pair wire

119.

Internet-like networks within an enterprise.

a)

Intranets

b)

Extranets

c)

Switching alternating

d)

Inter organizational networks

120.

Which class does this IP address, 191.168.0.1, belong to?

a)

Class C

b)

Class D

c)

Class A

d)

Class B

121.

What is the first IP address of this network: 172.16.66.0/21?

a)

172.16.48.0

b)

172.16.0.0

c)

172.16.66.0

d)

172.16.36.0

e)

172.16.12.0

122.

How many valid hosts can be assigned to this network: 192.168.192.10/29 ?

a)

7

b)

64

c)

63

d)

8

e)

30

123.

Routing is to find the path for the packet basing on…?

a)

Socket address

b)

IP address

c)

Port number

d)

MAC address

124.

Match the following: 1. Segments 2. Packets 3. Frames A. Associated with Data Link Layer B. Associated with Network Layer C. Associated with Transport Layer

a)

1->A; 2->B; 3 ->C

b)

1->A; 2->C; 3 ->B

c)

1->C; 2->B; 3 ->A

d)

1->C; 2->A; 3->B

e)

1->A; 2->C; 3 ->B

125.

Write router command to display the running configuration:

4 lines
126.

Write router command to go to the privilege mode:

4 lines
127.

Routing is to find the path for the packet basing on...

a)

IP address

b)

MAC address

c)

Socket address

d)

Port number

128.

Routing is to find the path for the packet basing on...

a)

Static routing protocols

b)

Dynamic routing protocols

c)

Distance vector routing protocols

d)

Link state routing protocols

129.

What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?

a)

62

b)

32

c)

63

d)

31

e)

16

130.

Which layer in the OSI reference model is responsible for determining the availability of the receiving program and checking to see if enough resources exist for that communication?

a)

transport

b)

session

c)

application

d)

presentation

e)

network

131.

What is the first IP of this network: 172.16.45.14/30?

a)

172.16.45.4

b)

172.16.45.0

c)

172.16.45.12

d)

172.16.45.14

e)

172.16.45.8

132.

Match the following: A. Repeaters B. Bridges C. Routers 1. Data Link Layer 2. Network Layer 3. Physical Layer

a)

A -> 1, B -> 3, C -> 2

b)

A -> 3, B -> 1, C -> 2

c)

A -> 2, B -> 3, C -> 1

d)

A -> 3, B -> 2, C -> 1

e)

A -> 1, B -> 2, C -> 3

133.

What is a correct netmask for subnet 192.168.100.128/30?

a)

255.255.255.0

b)

255.255.255.240

c)

255.255.255.248

d)

255.255.255.252

134.

If you ping fit.hanu.vn first time, the first packet will be sent to…

a)

DHCP server

b)

Web server

c)

Gateway

d)

DNS server

135.

What is the correct order for the OSI model?

a)

P S A PH D N T

b)

A P S T N D PH

c)

PH D N T A S P

d)

P S A T N D PH

136.

What is encapsulation?

a)

Putting the header on an incoming frame

b)

Putting a header on an incoming segment

c)

Putting a header on an outgoing frame

d)

Putting a header on an outgoing bit

137.

Which layer is most concerned with user applications?

a)

Application

b)

Presentation

c)

Network

d)

Physical

138.

Which of the following is de-encapsulation?

a)

Stripping the header from a frame

b)

Putting a header on a segment

c)

Putting a header on a frame

d)

Stripping a frame from a link

139.

What layer converts data into segments?

a)

Application

b)

Presentation

c)

Transport

d)

Physical

140.

What layer converts data into Packets?

a)

Network

b)

Application

c)

Physical

d)

Data Link

141.

What layer converts data into Frames?

a)

Application

b)

Physical

c)

Data Link

d)

Transport

142.

What layer converts data into bits?

a)

Application

b)

Session

c)

Data Link

d)

Physical

143.

Which layer is most concerned with getting data from the beginning to the final destination?

a)

Application

b)

Presentation

c)

Session

d)

Transport

144.

Which of the following is not a part of the Session layer?

a)

Establishing a session

b)

Ensuring error free segments

c)

Ending a session

d)

Keeping the sender and receiver from sending a message at the same time

145.

Which of the following is not a job for the presentation layer? Choose 2

a)

Data representation

b)

Compression

c)

Dialog management

d)

Transmission

e)

Encryption

146.

What does Peer to Peer communication involve?

a)

Each layer communication with the layer below it

b)

Each layer communication with layer above it

c)

Each layer communicating with adjacent layer in another system

d)

Each layer communication with it's corresponding layer in another system

147.

Why does the industry use a layered model? Choose all correct

a)

When you enhance one layer it doesn't affect the other layers

b)

Design and development can be made in a modular fashion

c)

Network operations can be simplified

d)

Troubleshooting can be simplified.

e)

All is correct.

148.

What is an example of a MAC address?

a)

Az32:6362:2434

b)

Sj:2817:8288

c)

GGG:354:665

d)

A625:cbdf:6525

149.

Which of the following is not part of the data link layer?

a)

Transports data across the physical link

b)

Performs physical addressing

c)

Performs flow control

d)

Determines network topology

e)

Terminates a session

150.

Of the following address AA77:3827:EF54, which of the following is the vendor portion?

a)

AA7738

b)

27EF54

c)

AA77

d)

EF54

151.

What is considered Layer 3 addressing?

a)

Data Link Layer

b)

Network Layer

c)

Application Layer

d)

None of these

152.

What layer are Bridges on?

a)

Data Link

b)

Physical

c)

Application

d)

Transport

153.

Repeaters are on what layer?

a)

Transport

b)

Session

c)

Physical

d)

Application

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