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