WorksheetsMod 1 Long Quiz
Total questions: 55
Worksheet time: 13mins
Which of the following provides the media (wired or wireless) to facilitate the
transfer of data?
Server
LAN
Client
Router
Which device makes traffic-forwarding decisions based on MAC addresses?
Hub
Router
Switch
Multiplexer
A company has various locations in a city interconnected using Metro Ethernet
connections. This is an example of what type of network?
WAN
CAN
PAN
MAN
A network formed by interconnecting a PC to a digital camera via a USB cable
is considered what type of network?
WAN
CAN
PAN
MAN
Which of the following physical LAN topologies requires the most cabling?
Bus
Ring
Star
WLAN
Which of the following topologies offers the highest level of redundancy?
mesh
Hub and spoke
Bus
Partial mesh
How many WAN links are required to create a full mesh of connections
between five remote sites?
5
10
15
20
Identify two advantages of a hub-and-spoke WAN topology as compared to a
full-mesh WAN topology.
Lower cost
Optimal routes
More scalable
More redundancy
Which type of network is based on network clients sharing resources with one
another?
Client/server
Client-peer
Peer-to-peer
Peer-to-server
Which of the following is an advantage of a peer-to-peer network, as compared
with a client/server network?
More scalable
Less expensive
Better performance
Simplified administration
What type of wireless topology features the use of access points to facilitate
network communications?
Ad hoc
Mesh
Infrastructure
Ring
What network type would help facilitate communications when large video or
audio files need to be housed and transferred through the network?
a. WLAN
b. CAN
c. PAN
d. SAN
Computer networks do which of the following?
a. Allow computer hosts to communicate data between each other
b. Provide a user interface to control computer hosts
c. Provide a user interface to control networking devices
d. Operate solar power stations
Networking devices do which of the following?
a. Provide an operating system for the Internet
b. Allow users to use more than one computer at once
c. Control and optimize communication between host devices
d. Allow users to use more than one user interface at once
A hub does which of the following?
a. Modifies the MAC address of a data-link frame to allow transmission over longer distances
b. Sends frames it receives on all ports, except on the port where the frame is received
c. Amplifies the electrical signal to allow transmission over longer distances
d. Sends frames it receives only on the port that corresponds to the destination MAC address of the data-link frame
A switch does which of the following?
a. Modifies the MAC address of a data-link frame to allow transmission over longer distances
b. Sends frames it receives on all ports, except on the port where the frame is received
c. Amplifies the electrical signal to allow transmission over longer distances
d. Sends frames it receives only on the port that corresponds to the destination MAC address of the data-link frame
Which layer of the OSI reference model contains the MAC and LLC sublayers?
a. Network layer
b. Transport layer
c. Physical layer
d. Data link layer
Which approach to bandwidth usage consumes all the available frequencies on a medium to transmit data?
a. Broadband
b. Baseband
c. Time-division multiplexing
d. Simplex
Windowing is provided at what layer of the OSI reference model?
a. Data link layer
b. Network layer
c. Transport layer
d. Physical layer
IP addresses reside at which layer of the OSI reference model?
a. Network layer
b. Session layer
c. Data link layer
d. Transport layer
Which of the following is a connectionless transport layer protocol?
a. IP
b. TCP
c. UDP
d. H.323
Identify the four layers of the TCP/IP stack. (Choose four.)
a. Session layer
b. Transport layer
c. Internet layer
d. Network layer
e. Application layer
What is the range of well-known TCP and UDP ports?
a. Below 2048
b. Below 1024
c. 16,384–32,768
d. Above 8192
Which protocol supports a secure connection to a remote host via terminal emulation software?
a. Telnet
b. SSH
c. FTP
d. SFTP
Identify the well-known UDP port number for NTP.
a. 53
b. 69
c. 123
d. 143
Identify three e-mail protocols. (Choose three.)
a. SNMP
b. SMTP
c. POP3
d. IMAP4
What is the Open Systems Interconnection (OSI) reference model?
a. A cabling standard that phone and networking companies implement
b. A computer host architecture blueprint that computer device manufacturers implement
c. A network architecture blueprint that network and computer device manufacturers implement
d. A network device architecture blueprint that network device manufacturers implement
How does the 0SI reference model guarantee independence of layer functionality?
a. By encapsulating data at each layer and by defining clear interfaces between each layer
b. By allowing network and computer device manufacturers to implement proprietary layers
c. By allowing communication between computer hosts over a network
d. By optimizing the network route between computer hosts
What is the function of the application layer of the 0SI reference model?
a. Segments and delivers data, correcting transmission errors
b. Opens and maintains communication channels, authenticating data communications
c. Converts data, encrypts data, and translates data
d. Manages the user interface and processes data before handing it off to the user
What is the function of the presentation layer of the OSI reference model?
a. Segments and delivers data, correcting transmission errors
b. Opens and maintains communication channels, authenticating data communications
c. Converts data, encrypts data, and translates data
d. Manages the user interface and processes data before handing it off to the user.
What is the function of the session layer of the OSI reference model?
a. Segments and delivers data, correcting transmission errors
b. Opens and maintains communication channels, authenticating data communications
c. Converts data, encrypts data, and translates data
d. Manages the user interface and processes data before handing it off to the User
What is the function of the transport layer of the OSI reference model?
a. Segments and delivers data, correcting transmission errors
b. Opens and maintains communication channels, authenticating data communications
c. Converts data, encrypts data, and translates data
d. Manages the user interface and processes data before handing it off to the user
What is the function of the network layer of the OSI reference model?
a. Segments and delivers data, correcting transmission errors
b. Manages electrical, optical, and over-the-air transmission of data bits
c. Routes data frames locally and manages local physical addressing
d. Routes data packets between networks and manages global logical addressing
What is the function of the data link layer of the OSI reference model?
a. Segments and delivers data, correcting transmission errors
b. Manages electrical, optical, and over-the-air transmission of data bits
c. Routes data frames locally and manages local physical addressing
d. Routes data packets between networks and manages global logical addressing
What is the function of the physical layer of the OSI reference model?
a. Segments and delivers data, correcting transmission errors
b. Manages electrical, optical, and over-the-air transmission of data bits
c. Routes data frames locally and manages local physical addressing
d. Routes data packets between networks and manages global logical addressing
Which network infrastructure device primarily makes forwarding decisions based on Layer 2 MAC addresses?
a. Router
b. Switch
c. Hub
d. Multilayer switch
A router operating at Layer 3 primarily makes its forwarding decisions based on what address?
a. Destination MAC address
b. Source IP address
c. Source MAC address
d. Destination IP address
A router has 12 ports. How many broadcast domains does the router have?
a. None
b. 1
c. 2
d. 12
A switch has 12 ports. How many collision domains does the switch have?
a. None
b. 1
c. 2
d. 12
If two devices simultaneously transmit data on an Ethernet network and a collision occurs, what does each station do in an attempt to resend the data and avoid another collision?
a. Each device compares the other device’s priority value (determined by IP address) with its own, and the device with the highest priority value transmits first.
b. Each device waits for a clear-to-send (CTS) signal from the switch.
c. Each device randomly picks a priority value, and the device with the highest value transmits first.
d. Each device sets a random back-off timer, and the device will attempt retransmission after the timer expires.
Which of the following describes a Web browser?
a. Layer 7 (application) protocol
b. Layer 7 software application
c. Layer 6 (presentation) software application
d. All of the above
In connection-oriented transport, which of the following occurs?
a. Sending and receiving hosts exchange TCP acknowledgments.
b. Sending and receiving hosts sequence their TCP segments.
c. Sending and receiving hosts perform a three-way handshake.
.
d. All of the above
What does the three-way handshake process allow two hosts to do?
a. Open a bidirectional TCP connection
b. Open a bidirectional IP channel
c. Open a bidirectional UDP session
d. All of the above
What happens whenever a TCP segment is missing at destination?
a. The receiving computer host aborts transmission.
b. The sending computer host aborts transmission.
c. The receiving computer host requests a retransmission.
d. The sending computer host requests a retransmission.
What does the positive acknowledgment and retransmission (PAR) TCP process ensure?
a. That all TCP segments are received within a certain time period
b. That all UDP segments are received within a certain time period
c. That all TCP/IP segments are received within a certain time period
d. That all IP segments are received within a certain time period
What do TCP and UDP ports allow multiple network applications to do?
a. Resolve the MAC address of the computer host they run on
b. Connect to network interface card (MC) drivers
c. Connect their sending and receiving counterparts on the same sending and receiving computer hosts
d. Resolve the IP address of the computer host they run on
Which layer of the OSI model is responsible for reliable delivery of data across the physical network?
a. Network layer
b. Data link layer
c. Transport layer
d. Physical layer
Transmission Control Protocol operates at which OSI layer?
a. Transport layer
b. Network layer
c. Session layer
d. Data link layer
Which layer of the OSI model is responsible for managing sessions between applications?
a. Presentation layer
b. Application layer
c. Transport layer
d. Session layer
Which of the following are not steps in the data-encapsulation process? (Choose two.)
a. Segments are converted into frames
b. User information is converted into data
c. Frames are converted into bits
d. Packets are converted into frames
e. Data is converted into packets
What does SMTP stand for?
a. Sending Mail Transfer Protocol
b. Simple Mail Transfer Protocol
c. Simple Method Timing Protocol
d. Simple Management Transfer Protocol
The User Datagram Protocol operates at which OSI layer?
a. Transport layer
b. Network layer
c. Session layer
d. Data link layer
Which layer of the 0SI model theoretically resides closest to the end user?
a. Presentation layer
b. Data link layer
c. Application layer
d. Physical layer
TCP Is considered to be what type of protocol?
a. Connectionless
b. Proprietary
c. Session-oriented
d. Connection-oriented
Which layer in the DoD model is responsible for routing IP packets?
a. Physical layer
b. Session layer
c. Network layer
d. Internet layer
