NET + N10 – 008 Test Prep (200  Questions With Verified Answers)

NET + N10 – 008 Test Prep (200 
Questions With Verified Answers)

On a TCP/IP network, which layers of the Open Systems Interconnection 
(OSI) model contain
protocols that are responsible for encapsulating the data generated by an 
application,
creating the payload for a packet that will be transmitted over a network? 
(Choose all
that apply.)
A. Physical
B. Data link
C. Network
D. Transport
E. Session
F. Presentation
G. Application - B, C, D. Before the payload data generated by an application 
can be transmitted over a TCP/ IP network, the system must encapsulate it 
by applying protocol headers and footers at three layers of the OSI model. 
The data link layer applies a header and footer to create an Ethernet frame. 
The network layer applies a header to create an IP datagram. The transport 
layer applies a TCP or UDP header to create a segment or datagram. The 
other model layers are involved in the payload transmission process, but 
they do not encapsulate the payload.
What layer of the Open Systems Interconnection (OSI) model is responsible 
for translating
and formatting information?
A. Physical
B. Data link
C. Network
D. Transport
E. Session
F. Presentation
G. Application - F. The presentation layer implements functions that provide 
formatting, translation, and presentation of information. No other layers of 
the OSI model translate and format application data.
Which of the following devices typically operates at the network layer of the 
Open Systems
Interconnection (OSI) model?
A. Proxy server
B. Hub
C. Network interface adapter
D. Router - D. A router connects networks at the network layer of the OSI 
model. Proxy servers operate at the application layer. Network interface 
adapters operate at both the data link and the physical layers. Hubs are 
physical layer devices.
NET + n10-008
Which of the following organizations developed the Open Systems 
Interconnection
(OSI) model?
A. International Telecommunication Union (ITU-T)
B. Comité Consultatif International Télégraphique et Téléphonique (CCITT)
C. American National Standards Institute (ANSI)
D. Institute of Electrical and Electronics Engineers (IEEE)
E. International Organization for Standardization (ISO) - E. ISO developed
and published the OSI model to serve as a conceptual model for software 
and hardware developers. The ITU-T, formerly known as the CCITT, 
coordinates the development and advancement of international 
telecommunication networks and services. ANSI is a private organization 
that administers and coordinates a United States-based standardization and 
conformity assessment system. The IEEE publishes standards that define 
data link and physical layer standards. These standards are referred to 
collectively as the 802 series
At which of the following layers of the Open Systems Interconnection (OSI) 
model do the
protocols on a typical local area network (LAN) use media access control 
(MAC) addresses
to identify other computers on the network?
A. Physical
B. Data link
C. Network
D. Transport - B. The Ethernet (or IEEE 802.3) protocol at the data link layer 
uses MAC addresses to idenitify computers on the local network. MAC 
addresses are coded into the firmware of physical network interface 
adapters by the manufacturer. The physical layer deals with signals and is 
not involved in addressing. The IP protocol at the network layer has its own 
addressing system. The transport layer protocols are not involved in 
addressing.
Which layer of the Open Systems Interconnection (OSI) model is responsible 
for the logical
addressing of end systems and the routing of datagrams on a network?
A. Physical
B. Data link
C. Network
D. Transport
E. Session
F. Presentation