NET + n10-008 UPDATED ACTUAL Questions and CORRECT Answers
1. Which of the following organizations de- E. ISO developed and published the OSI model
veloped the Open Systems Interconnec- to serve as a conceptual model for software
tion and hardware developers. The ITU-T, former-
(OSI) model? ly known as the CCITT, coordinates the de-
A. International Telecommunication velopment and advancement of internation-
Union (ITU-T) al telecommunication networks and services.
B. Comité Consultatif International Télé- ANSI is a private organization that administers
graphique et Téléphonique (CCITT) and coordinates a United States-based stan-
C. American National Standards Insti- dardization and conformity assessment system.
tute (ANSI) The IEEE publishes standards that define data
D. Institute of Electrical and Electronics link and physical layer standards. These stan-
Engineers (IEEE) dards are referred to collectively as the 802
E. International Organization for Stan- series
dardization (ISO)
2. At which of the following layers of B. The Ethernet (or IEEE 802.3) protocol at the
the Open Systems Interconnection (OSI) data link layer uses MAC addresses to idenitify
model do the computers on the local network. MAC address-
protocols on a typical local area network es are coded into the firmware of physical net-
(LAN) use media access control (MAC) work interface adapters by the manufacturer.
addresses The physical layer deals with signals and is not
to identify other computers on the net- involved in addressing. The IP protocol at the
work? network layer has its own addressing system.
A. Physical The transport layer protocols are not involved
B. Data link in addressing.
C. Network
D. Transport
3. Which layer of the Open Systems Inter- C. Network layer protocols (such as IP) contain
connection (OSI) model is responsible headers that specify logical addresses for end
for the logical system communication and route datagrams
addressing of end systems and the rout- across a network. The physical layer defines
, NET + n10-008 UPDATED ACTUAL Questions and CORRECT Answers
ing of datagrams on a network? standards for physical and mechanical charac-
A. Physical teristics of a network. The data link layer uses
B. Data link media access control (MAC) or hardware ad-
C. Network dresses, not logical addresses. The transport
D. Transport layer uses port numbers, not logical addresses.
E. Session Session layer protocols create and maintain a
F. Presentation dialogue between end systems. Presentation
G. Application layer protocols are responsible for the format-
ting, translation, and presentation of informa-
tion. The application layer provides an entry
point for applications to access the protocol
stack and prepare information for transmission
across a network.
4. On a TCP/IP network, which layers of B, C, D. Before the payload data generated by
the Open Systems Interconnection (OSI) an application can be transmitted over a TCP/
model contain IP network, the system must encapsulate it by
protocols that are responsible for en- applying protocol headers and footers at three
capsulating the data generated by an layers of the OSI model. The data link layer
application, applies a header and footer to create an Ether-
creating the payload for a packet that net frame. The network layer applies a header
will be transmitted over a network? to create an IP datagram. The transport layer
(Choose all applies a TCP or UDP header to create a seg-
that apply.) ment or datagram. The other model layers are
A. Physical involved in the payload transmission process,
B. Data link but they do not encapsulate the payload.
C. Network
D. Transport
E. Session
F. Presentation
G. Application
, NET + n10-008 UPDATED ACTUAL Questions and CORRECT Answers
5. What layer of the Open Systems Inter- F. The presentation layer implements functions
connection (OSI) model is responsible that provide formatting, translation, and pre-
for translating sentation of information. No other layers of
and formatting information? the OSI model translate and format application
A. Physical data.
B. Data link
C. Network
D. Transport
E. Session
F. Presentation
G. Application
6. Which of the following devices typical- D. A router connects networks at the network
ly operates at the network layer of the layer of the OSI model. Proxy servers oper-
Open Systems ate at the application layer. Network interface
Interconnection (OSI) model? adapters operate at both the data link and the
A. Proxy server physical layers. Hubs are physical layer devices.
B. Hub
C. Network interface adapter
D. Router
7. Which layer of the Open Systems Inter- G. The application layer provides an entry point
connection (OSI) model provides an en- for applications to access the protocol stack and
trance point to prepare information for transmission across a
the protocol stack for applications? network. All other layers of the OSI model reside
A. Physical below this layer and rely on this entry point.
B. Data link
C. Network
D. Transport
E. Session
F. Presentation
G. Application
, NET + n10-008 UPDATED ACTUAL Questions and CORRECT Answers
8. Which layer of the Open Systems Inter- E. The session layer is responsible for creat-
connection (OSI) model is responsible ing and maintaining a dialogue between end
for dialogue systems. This dialogue can be a two-way al-
control between two communicating ternate dialogue that requires end systems to
end systems? take turns transmitting, or it can be a two-way
A. Physical simultaneous dialogue in which either end sys-
B. Data link tem can transmit at will. No other layers of the
C. Network OSI model perform dialogue control between
D. Transport communicating end systems
E. Session
F. Presentation
G. Application
9. Some switches can perform functions B, C. The primary function of a switch is to
associated with two layers of the Open process packets based on their media access
Systems Interconnection control (MAC) addresses, which makes it a data
(OSI) model. Which two of the follow- link layer device. However, many switches can
ing layers are often associated with net- also perform routing functions based on IP ad-
work dresses, which operate at the network layer.
switching? (Choose all that apply.)
A. Physical
B. Data link
C. Network
D. Transport
E. Session
F. Presentation
G. Application
10. At which layer of the Open Systems D. There are two types of transport layer proto-
Interconnection (OSI) model are there cols: connection-oriented and connectionless.
TCP/IP protocols Connection-oriented protocols guarantee the
than can provide either connectionless delivery of data from source to destination
1. Which of the following organizations de- E. ISO developed and published the OSI model
veloped the Open Systems Interconnec- to serve as a conceptual model for software
tion and hardware developers. The ITU-T, former-
(OSI) model? ly known as the CCITT, coordinates the de-
A. International Telecommunication velopment and advancement of internation-
Union (ITU-T) al telecommunication networks and services.
B. Comité Consultatif International Télé- ANSI is a private organization that administers
graphique et Téléphonique (CCITT) and coordinates a United States-based stan-
C. American National Standards Insti- dardization and conformity assessment system.
tute (ANSI) The IEEE publishes standards that define data
D. Institute of Electrical and Electronics link and physical layer standards. These stan-
Engineers (IEEE) dards are referred to collectively as the 802
E. International Organization for Stan- series
dardization (ISO)
2. At which of the following layers of B. The Ethernet (or IEEE 802.3) protocol at the
the Open Systems Interconnection (OSI) data link layer uses MAC addresses to idenitify
model do the computers on the local network. MAC address-
protocols on a typical local area network es are coded into the firmware of physical net-
(LAN) use media access control (MAC) work interface adapters by the manufacturer.
addresses The physical layer deals with signals and is not
to identify other computers on the net- involved in addressing. The IP protocol at the
work? network layer has its own addressing system.
A. Physical The transport layer protocols are not involved
B. Data link in addressing.
C. Network
D. Transport
3. Which layer of the Open Systems Inter- C. Network layer protocols (such as IP) contain
connection (OSI) model is responsible headers that specify logical addresses for end
for the logical system communication and route datagrams
addressing of end systems and the rout- across a network. The physical layer defines
, NET + n10-008 UPDATED ACTUAL Questions and CORRECT Answers
ing of datagrams on a network? standards for physical and mechanical charac-
A. Physical teristics of a network. The data link layer uses
B. Data link media access control (MAC) or hardware ad-
C. Network dresses, not logical addresses. The transport
D. Transport layer uses port numbers, not logical addresses.
E. Session Session layer protocols create and maintain a
F. Presentation dialogue between end systems. Presentation
G. Application layer protocols are responsible for the format-
ting, translation, and presentation of informa-
tion. The application layer provides an entry
point for applications to access the protocol
stack and prepare information for transmission
across a network.
4. On a TCP/IP network, which layers of B, C, D. Before the payload data generated by
the Open Systems Interconnection (OSI) an application can be transmitted over a TCP/
model contain IP network, the system must encapsulate it by
protocols that are responsible for en- applying protocol headers and footers at three
capsulating the data generated by an layers of the OSI model. The data link layer
application, applies a header and footer to create an Ether-
creating the payload for a packet that net frame. The network layer applies a header
will be transmitted over a network? to create an IP datagram. The transport layer
(Choose all applies a TCP or UDP header to create a seg-
that apply.) ment or datagram. The other model layers are
A. Physical involved in the payload transmission process,
B. Data link but they do not encapsulate the payload.
C. Network
D. Transport
E. Session
F. Presentation
G. Application
, NET + n10-008 UPDATED ACTUAL Questions and CORRECT Answers
5. What layer of the Open Systems Inter- F. The presentation layer implements functions
connection (OSI) model is responsible that provide formatting, translation, and pre-
for translating sentation of information. No other layers of
and formatting information? the OSI model translate and format application
A. Physical data.
B. Data link
C. Network
D. Transport
E. Session
F. Presentation
G. Application
6. Which of the following devices typical- D. A router connects networks at the network
ly operates at the network layer of the layer of the OSI model. Proxy servers oper-
Open Systems ate at the application layer. Network interface
Interconnection (OSI) model? adapters operate at both the data link and the
A. Proxy server physical layers. Hubs are physical layer devices.
B. Hub
C. Network interface adapter
D. Router
7. Which layer of the Open Systems Inter- G. The application layer provides an entry point
connection (OSI) model provides an en- for applications to access the protocol stack and
trance point to prepare information for transmission across a
the protocol stack for applications? network. All other layers of the OSI model reside
A. Physical below this layer and rely on this entry point.
B. Data link
C. Network
D. Transport
E. Session
F. Presentation
G. Application
, NET + n10-008 UPDATED ACTUAL Questions and CORRECT Answers
8. Which layer of the Open Systems Inter- E. The session layer is responsible for creat-
connection (OSI) model is responsible ing and maintaining a dialogue between end
for dialogue systems. This dialogue can be a two-way al-
control between two communicating ternate dialogue that requires end systems to
end systems? take turns transmitting, or it can be a two-way
A. Physical simultaneous dialogue in which either end sys-
B. Data link tem can transmit at will. No other layers of the
C. Network OSI model perform dialogue control between
D. Transport communicating end systems
E. Session
F. Presentation
G. Application
9. Some switches can perform functions B, C. The primary function of a switch is to
associated with two layers of the Open process packets based on their media access
Systems Interconnection control (MAC) addresses, which makes it a data
(OSI) model. Which two of the follow- link layer device. However, many switches can
ing layers are often associated with net- also perform routing functions based on IP ad-
work dresses, which operate at the network layer.
switching? (Choose all that apply.)
A. Physical
B. Data link
C. Network
D. Transport
E. Session
F. Presentation
G. Application
10. At which layer of the Open Systems D. There are two types of transport layer proto-
Interconnection (OSI) model are there cols: connection-oriented and connectionless.
TCP/IP protocols Connection-oriented protocols guarantee the
than can provide either connectionless delivery of data from source to destination
