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firewall

Total questions: 87

Worksheet time: 49mins

Name
Class
Date
1.

You have implemented a network where each device provides all other devices on the network with access to shared files.

What type of network do you have?

a)

Client-server

b)

Polling

c)

Peer-to-peer

d)

Multiple access

2.

You have implemented a network where hosts are assigned specific roles, such as file sharing and printing roles. Other hosts access those resources, but do not host services of their own.

What type of network do you have?

a)

Client-server

b)

Intranet

c)

Peer-to-peer

d)

Extranet

3.

Which of the following geographic network types are typically managed by a city as a public utility?

a)

Personal area network (PAN)

b)

Metropolitan area network (MAN)

c)

Wide area network (WAN)

d)

Local area network (LAN)

4.

You have a small network that uses a switch to connect multiple devices. Which physical topology are you using?

a)

Bus

b)

Mesh

c)

Star

d)

Ring

5.

Your manager has asked you to implement a wired network infrastructure that will accommodate failed connections. You don't have a large budget, so you decide to provide redundancy for only a handful of critical devices.

Which of the following network topologies should you implement?

a)

Star

b)

Bus

c)

Partial mesh

d)

Full mesh

6.

You have a network that uses a logical ring topology. How do messages travel through the network?

a)

Messages are sent to a central device that forwards them to the destination devices.

b)

Messages travel from one device to the next until they reach the destination device.

c)

Messages are sent to all devices connected to the network.

d)

Messages are sent directly to the destination device only.

7.

You have a network that uses a logical bus topology. How do messages travel through the network?

a)

Messages travel from one device to the next until they reach the destination device.

b)

Messages are broadcast to all devices connected to the network.

c)

Messages are sent to a central device that forwards them to the destination devices.

d)

Messages are sent directly to the correct destination device.

8.

Which of the following topologies connects all devices to a trunk cable?

a)

Tree

b)

Bus

c)

Ring

d)

Star

9.

Which of the following topologies connects each device to a neighboring device?

a)

Star

b)

Ring

c)

Bus

d)

Tree

10.

In which of the following topologies does each device on the network act as a repeater, sending the signal to the next device?

a)

Star

b)

Bus

c)

Ring

d)

Tree

11.

Which of the following topologies connects each network device to a central hub?

a)

Bus

b)

Mesh

c)

Ring

d)

Star

12.

You have implemented an ad hoc wireless network that doesn't employ a wireless access point. Every wireless network card can communicate directly with any other wireless network card on the network.

What type of physical network topology has been implemented in this type of network?

a)

Ring

b)

Bus

c)

Tree

d)

Star

e)

Mesh

13.

Your manager has asked you to implement a network infrastructure that will accommodate failed connections.

Which of the following network topologies provides redundancy for a failed link?

a)

Mesh

b)

Bus

c)

Ring

d)

Star

14.

You want to implement a fault tolerant topology as you connect routers on your wide area network. Which of the following topologies meets your needs?

a)

Bus

b)

Star

c)

Mesh

d)

Ring

15.

What device is used to create a physical star topology?

a)

Switch

b)

Bridge

c)

Firewall

d)

Router

16.

Which of the following functions are performed by the OSI Transport layer? (Select three.)

a)

Reliable message delivery

b)

End-to-end flow control

c)

Data segmentation and reassembly

d)

Consistent data formatting between dissimilar systems

e)

Control media access, logical topology, and device identification

17.

What is the basic purpose of the OSI Physical layer?

a)

Defines basic physical structures, such as disks.

b)

Coordinates rules for managing network servers.

c)

Coordinates rules for transmitting bits.

d)

Coordinates rules for routing packets.

18.

Which of the following are included as part of Data Link layer specifications? (Select two.)

a)

Synchronizing individual bits as they are transmitted through the network.

b)

Composing electrical signals as they pass through the transmission medium.

c)

Identifying physical network devices.

d)

Controlling how messages are propagated through the network.

19.

In the OSI model, what is the primary function of the Network layer?

a)

Ensures that packets are delivered with no loss or duplication

b)

Allows applications to establish, use, and end a connection

c)

Transmits data frames

d)

Routes messages between networks

20.

Which of the following tasks is associated with the Session layer?

a)

Acknowledgement coordination

b)

Connection establishment

c)

Transmission synchronization

d)

Host ID number assignment

21.

In the OSI model, which of the following functions are performed at the Presentation layer? (Select two.)

a)

Encrypt and compress data

b)

Specify data format (such as file formats)

c)

Transmit data frames

d)

Handle general network access, flow control, and error recovery

e)

Provide network services

22.

In the OSI model, which of the following functions are performed at the Application layer? (Select all that apply.)

a)

Enabling communication between network clients and services

b)

Data translation

c)

Integrating network functionality into the host operating system

d)

Conversation identification

23.

Which of the following functions are performed at the Physical layer of the OSI model?

a)

Enabling network services

b)

Data translation

c)

Provisioning environments where you can run network applications

d)

Moving data across network cables

e)

Conversation identification

24.

The Data Link Layer of the OSI model is comprised of two sublayers. What are they? (Select two.)

a)

LAT

b)

SAN

c)

DLC

d)

LLC

e)

MAC

25.

Which of the following are functions of the MAC sublayer? (Select two.)

a)

Defining a unique hardware address for each device on the network

b)

Mapping hardware addresses to link-layer addresses

c)

Creating routing tables based on MAC addresses

d)

Letting devices on the network have access to the LAN

26.

Which OSI model layer is responsible for guaranteeing reliable message delivery?

a)

Application

b)

Data Link

c)

Transport

d)

Session

27.

Which of the following protocols allows hosts to exchange messages to indicate problems with packet delivery?

a)

IGMP

b)

IP

c)

ICMP

d)

DHCP

e)

ARP

28.

Which protocol is used on the World Wide Web to transmit web pages to web browsers?

a)

NNTP

b)

HTML

c)

HTTP

d)

SMTP

29.

Your company has just acquired another company in the same city. You need to integrate the two email systems so that messages can be exchanged between the email servers. Currently, each network uses an email package from a different vendor.

Which TCP/IP protocol will enable message exchange between systems?

a)

IMAP4

b)

SMTP

c)

POP3

d)

FTP

e)

ICMP

30.

You are an application developer, and you are writing a program for exchanging video files through a TCP/IP network. You need to select a transport protocol that will guarantee delivery.

Which TCP/IP protocol provides this capability?

a)

IP

b)

TFTP

c)

UDP

d)

RIP

e)

TCP

31.

Which of the following protocols stores email on the mail server and allows users to access messages from various client devices without having to download the emails?

a)

SMTP

b)

IMAP4

c)

POP3

d)

NTP

32.

Which protocol is used to securely browse a website?

a)

HTTPS

b)

SSH

c)

SIP

d)

ARP

e)

UDP

33.

The UDP transport protocol provides which of the following features? (Select all that apply.)

a)

Connectionless datagram services

b)

Low overhead

c)

Sequence numbers and acknowledgements

d)

Guaranteed delivery

34.

What protocol sends email to a mail server?

a)

FTP

b)

SMTP

c)

SNMP

d)

TFTP

e)

POP3

35.

You have a large TCP/IP network and want to keep a host's real time clock synchronized. What protocol should you use?

a)

NTP

b)

SNMP

c)

SAP

d)

SMTP

e)

NNTP

36.

Which of the following TCP/IP protocols do email clients use to download messages from a remote mail server?

a)

FTP

b)

SMTP

c)

POP3

d)

SPC

e)

SNMP

37.

You are asked to recommend an email retrieval protocol for a company's sales team. The sales team needs to access email from various locations and possibly different computers. The sales team does not want to worry about transferring email messages or files back and forth between these computers.

Which email protocol is designed for this purpose?

a)

POP4

b)

POP3

c)

IMAP4

d)

SMTP

e)

MFTP

38.

Which of the following protocols includes extensive error checking to ensure that a transmission is sent and received without mistakes?

a)

UDB

b)

TCP

c)

UDP

d)

UCP

39.

What is the binary format for the following decimal IP address?

131.9.202.111

a)

10000001.00001010.11000011.01010111

b)

10000110.00001011.11000101.10101110

c)

10000011.00001001.11001010.01101111

d)

10000111.00001101.11001110.01011101

40.

What is the decimal format of the following binary IP address?

11001110.00111010.10101010.01000011

a)

206.58.170.67

b)

238.90.202.99

c)

190.42.154.51

d)

205.57.169.66

41.

Which network component connects a device to transmission media and allows the device to send and receive messages?

a)

Client

b)

Network interface card

c)

Peripheral

d)

Protocol

e)

Server

42.

Which of the following statements accurately describes how a modem works? (Select two.)

a)

It demonstrates analog PC data into digital data that can be transmitted through a telephone network.

b)

It modulates digital data from the PC into analog data and transmits it on a telephone network.

c)

It transmits digital signals over ordinary telephone copper wiring at a rate up to 128 Kbps.

d)

It demodulates analog data from a telephone network into digital PC data.

e)

It communicates over a telephone network using digital signals.

43.

You have a server that has a 100BaseFX network interface card that you need to connect to a switch. The switch only has 100BaseTX switch ports.

Which device should you use?

a)

Hub

b)

Bridge

c)

Repeater

d)

Media converter

e)

Gateway

44.

Which device sends signals from a computer onto a network?

a)

Router

b)

Transceiver

c)

Gateway

d)

Cable

45.

At which OSI model layer does a media converter operate?

a)

Layer 1

b)

Layer 2

c)

Layer 3

d)

Layer 4

46.

You want a switch to have the ability to modify the media type the switch port supports. Which type of module might you use to make this possible?

a)

SFP

b)

OC-x

c)

GBIC

d)

MPLS

47.

Which of the following is a valid MAC address?

a)

83-5A-5B-0B-31-55-F1

b)

34-9A-86-1G-B3-24

c)

C0-34-FF-15-01-8E

d)

192.168.12.15

e)

255.255.255.0

48.

Which of the following is a valid MAC address?

a)

95ABC2F4.ABC5.569D.43BF

b)

145.65.254.10

c)

AB.07.CF.62.16.BD

d)

FABC.875E.9BG6

49.

A host wants to send a message to another host that has the IP address 115.99.80.157. IP does not know the hardware address of the destination device. Which protocol can be used to discover the MAC address?

a)

IGMP

b)

DNS

c)

BOOTP

d)

DHCP

e)

ARP

50.

Which of the following is true about the MAC address? (Select two.)

a)

It is a 32-bit address.

b)

It is typically represented by hexadecimal numbers.

c)

It is a 48-bit address.

d)

It is typically represented by octets of decimal numbers between 0-255.

e)

It is a 64-bit address.

51.

Which of the following best describes how a switch functions?

a)

It connects multiple segments of different architectures. It translates frames and broadcasts them to all of its ports.

b)

It connects multiple segments of different architectures. It translates frames and forwards them to the appropriate segment.

c)

It connects multiple cable segments (or devices) and broadcasts frames to all of its ports.

d)

It connects multiple cable segments (or devices) and forwards frames to the appropriate segment.

52.

How do switches and bridges learn where devices are located on a network?

a)

When a frame enters a port, the destination MAC address is copied from frame header.

b)

When a frame enters a port, the source MAC address is copied from the frame header.

c)

When a frame enters a port, the destination IP address is copied from the frame header.

d)

When a frame enters a port, the source IP address is copied from the frame header.

53.

An eight-port switch receives a frame on port number 1. The frame is addressed to an unknown device. What will the switch do?

a)

Send the frame out ports two through eight.

b)

Send the frame out all eight ports.

c)

Drop the frame.

d)

Send the frame out the destination port.

54.

Which of the following devices does not segment the network?

a)

Switch

b)

Hub

c)

Firewall

d)

Router

55.

Which of the following hardware devices regenerates a signal out all connected ports without examining the frame or packet contents? (Select two.)

a)

Switch

b)

Repeater

c)

Hub

d)

Bridge

e)

Gateway

56.

At which OSI layer does a router operate to forward network messages?

a)

Physical

b)

Network

c)

Data Link

d)

Session

e)

Transport

57.

Your company purchases a new bridge that filters packets based on the MAC address of the destination computer. On which layer of the OSI model is this device functioning?

a)

Presentation

b)

Session

c)

Transport

d)

Data Link

58.

At which of the following OSI layers does a router operate?

a)

Layer 1

b)

Layer 2

c)

Layer 3

d)

Layer 4

59.

Which of the following devices operate at the Data Link layer of the OSI model? (Select three.)

a)

Hubs

b)

Switches

c)

Bridges

d)

Routers

e)

Network interface cards (NICs)

60.

Which of the following devices operate at OSI model Layer 2? (Select two.)

a)

Firewall

b)

Hub

c)

Network interface card

d)

Repeater

e)

Switch

61.

A switch is associated with which OSI model layer?

a)

Physical

b)

Data Link

c)

Network

d)

Transport

62.

At which layer of the OSI model do hubs operate?

a)

Data Link

b)

Layer 3

c)

Internet

d)

Physical

63.

Which of the following devices operates at the OSI model Layer 2?

a)

Firewall

b)

Switch

c)

Router

d)

Hub

64.

Which of the following devices operates at the OSI model Layer 1?

a)

Switch

b)

Router

c)

Firewall

d)

Hub

65.

Which of the following hardware devices links multiple networks and directs traffic between networks?

a)

Bridge

b)

Router

c)

Repeater

d)

Hub

66.

You are the network administrator for a small organization. Recently, you contracted with an ISP to connect your organization's network to the internet to provide users with internet access. Since doing so, it has come to your attention that an intruder has invaded your network from the internet on three separate occasions.

What type of network hardware should you implement to prevent this from happening again?

a)

CSU/DSU

b)

Router

c)

Firewall

d)

Switch

e)

Proxy server

67.

Which of the following is the best device to deploy if you want to protect your private network from a public untrusted network?

a)

Gateway

b)

Router

c)

Firewall

d)

Hub

68.

Which of the following is a good reason to install a firewall?

a)

To prevent hackers from accessing your network.

b)

To cache web pages.

c)

To limit public access to just your DHCP server instead of your whole network.

d)

To translate between internet IP addresses and the IP addresses on your private network.

69.

You are the administrator of your company's network. You want to prevent unauthorized access to your intranet from the internet. Which of the following should you implement?

a)

Packet Internet Groper

b)

Firewall

c)

Proxy server

d)

ICS

70.

You recently created a new network segment for the development department. Because the hosts are now on a different network segment, they can no longer contact the DHCP server. Both network segments are connected via a Cisco router.

Which of the following would be the best action to take in order to fix the problem?

a)

Install and configure a new DHCP server on the development network segment.

b)

Implement an IP helper address on the router.

c)

Move the DHCP server to the new network segment.

d)

Configure the router to forward broadcast messages.

71.

You have a workstation connected to a small branch network using a single switch. The network does not have any routers and is not connected to the internet. What are the minimum configuration parameters required on the workstation to be able to communicate with all hosts on the network?

a)

IP address and subnet mask

b)

IP address

c)

IP address and default gateway

d)

IP address, subnet mask, and default gateway

72.

Which of the following is the last IP address that can be assigned to hosts on the 166.70.0.0 network using the default subnet mask?

a)

166.71.0.0

b)

166.70.255.254

c)

166.70.0.254

d)

166.70.0.255

e)

166.70.255.255

73.

Your network has been assigned the Class C network address 200.78.151.0. Which of the following addresses can be assigned to hosts on your network? (Select three.)

a)

200.78.151.252

b)

200.78.152.14

c)

200.78.151.12

d)

200.78.151.255

e)

200.78.151.111

74.

Your network has been assigned the Class B network address of 179.113.0.0. Which three of the following addresses can be assigned to hosts on your network?

a)

179.112.95.64

b)

179.113.65.12

c)

179.113.89.0

d)

179.113.0.0

e)

179.113.0.118

75.

Assuming the network is indicated by the default portion of the IP address, which three of the following IP addresses belong to the Class A network 114.0.0.0? (Select three.)

a)

114.58.12.0

b)

114.0.0.15

c)

115.88.0.55

d)

114.122.66.12

e)

115.77.89.4

76.

A host on the network has an IP address of 129.11.99.78 using the default subnet mask. How would you identify the address and mask using CIDR notation?

a)

129.11.99.78/16

b)

129.11.99.78:16

c)

129.11.99.78/24

d)

129.11.99.78:8

e)

129.11.99.78:24

77.

Which of the following best describes the purpose of using subnets?

a)

Subnets place each device within its own collision domain.

b)

Subnets divide an IP network address into multiple network addresses.

c)

Subnets let you connect a private network to the internet.

d)

Subnets combine multiple IP network addresses into one network address.

78.

Which of the following terms are often synonymous with or made possible with CIDR? (Select two.)

a)

Classless

b)

OSPF

c)

NAT

d)

Classful

e)

VLSM

79.

You've decided to use a subnet mask of 255.255.192.0 on the 172.17.0.0 network to create four separate subnets.

Which network IDs will be assigned to these subnets in this configuration? (Select two.)

a)

172.17.32.0

b)

172.17.128.0

c)

172.17.96.0

d)

172.17.16.0

e)

172.17.0.0

80.

You have a small network connected to the internet as shown in the Exhibit. You need to configure the default gateway address on Wrk1 so that it can communicate with hosts on the internet.

Which address would you use for the default gateway address?

a)

The IP address assigned to SwitchA.

b)

The IP address assigned to Fa0/0 on Router1.

c)

The IP address assigned to Fa0/1 on Router2.

d)

The IP address assigned to Fa0/1 on Router1.

e)

The IP address assigned to Fa0/0 on Router2.

81.

You have a small network, as shown in the Exhibit. You have configured the IP address and subnet mask on Wrk1. You want to be able to use Wrk1 to browse the internet to connect to sites like www.cisco.com.

Which other parameters are required on the workstation? (Select two.)

a)

Host name

b)

WINS server address

c)

DNS server address

d)

DHCP server address

e)

Default gateway

82.

You manage a subnet that uses the subnet address 198.162.1.0/23.

Which of the following best describes how addressing is configured for the subnet?

a)

Supernetting

b)

Private

c)

Subnetting

d)

Classful

83.

You manage a server that uses an IP address of 192.168.255.188 with a mask of 255.255.0.0.

Which of the following describes the address type?

a)

Classful

b)

Public

c)

Classless

d)

Broadcast

e)

Multicast

84.

Which of the following IP address ranges is reserved for automatic private IP addressing?

a)

169.168.0.1 - 169.168.255.255

b)

192.168.0.0 - 192.168.255.254

c)

169.192.0.0 - 169.192.254.255

d)

169.254.0.1 - 169.254.255.254

e)

192.168.0.1 - 192.168.254.255

85.

What is the network address and subnet mask used by APIPA? (Select two.)

a)

169.254.0.0

b)

169.255.0.0

c)

255.255.255.0

d)

255.255.0.0

e)

169.0.250.0

86.

CorpServ is a small company with 14 client systems and a network printer. Because there are only a limited number of networked systems, you decide to use APIPA addressing for the network. With APIPA configured, all systems are able to communicate with each other, but you are having trouble configuring Internet access.

What is the likely cause of the problem?

a)

Private addresses cannot directly communicate to hosts outside the local subnet.

b)

The default gateway is not set on the server.

c)

The DNS server is unavailable to resolve internet host names.

d)

The default gateway is not set on the client systems.

e)

All client systems must be rebooted.

87.

Which of the following geographic network types is made up of an interconnection of LANs?

a)

Wide Area Network (WAN)

b)

Wireless Local Area Network (WLAN)

c)

Campus Area Network (CAN)

d)

Metropolitan Area Network (MAN)

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