CompTIA Network+ N10-008 UPDATED ACTUAL Questions
and CORRECT Answers
1. Represents an alias for a host Cananonical Name
CNAME
2. Identifies authoritative DNS name servers for the Name Server
zone NS
3. Identifies an email server for the domain Mail Excahnger
MX
4. Identifies the primary DNS name server that is author- Start of Authority
itative for the zone and resolves names SoA
5. Resolves a host name to an IPv4 address Address IPv4
A
6. Resolves a host name to an IPv6 address Address IPv6
AAAA
7. Identifies a record that is providing a network service Service
or protocol SRV
8. Resolves an IP address to a host name in reverse Pointer
lookup zones PTR
9. Stores any free form text that may be needed to sup- Text
port other network services TXT
10. Physical Layer (layer 1) transmits and receives bits
from one node to another
node.
Layer 1 devices in-
clude transceivers, re-
peaters, hubs, media con-
verters, and modems
, CompTIA Network+ N10-008 UPDATED ACTUAL Questions
and CORRECT Answers
11. The Data Link layer (layer 2) transfers data between
nodes on the same logical
segment.
Layer 2 devices in-
clude network adapters
or network interface cards
(NICs), bridges, switches,
and wireless access points
(APs)
12. The Network layer (layer 3) moves data around a net-
work of networks, known
as an internetwork or the
internet.
The main device working
at layer 3 is the router,
as well as basic fire-
walls and layer 3 switch-
es, which combine the
function of switches and
routers. Multilayer switch-
es work at multiple lay-
ers, as their name sug-
gests, but in the example,
the network layer states it
covers only the routing of
data around an internet-
work.
The multilayer switch
would not go here as it
, CompTIA Network+ N10-008 UPDATED ACTUAL Questions
and CORRECT Answers
provides more than just
routing.
13. The Transport Layer (layer 4) ensures reliable data de-
livery, should the applica-
tion require it. It also iden-
tifies each type of network
application by assigning it
a port number.
Multilayer switches, usu-
ally working as load bal-
ancers, operate at the
transport layer, as well
as many types of securi-
ty applicates such as ad-
vanced firewalls and in-
trusion detection systems
(IDSs). These devices also
operate at higher layers of
the OSI model.
14. The Session Layer (Layer 5) represents the dialog con-
trol functions that admin-
ister the process of estab-
lishing the dialog, manag-
ing data transfer, and then
ending (or tearing down)
the session.
15. The Presentation layer (layer 6) transforms data between
the format required for
the network and the for-
, CompTIA Network+ N10-008 UPDATED ACTUAL Questions
and CORRECT Answers
mat required for the ap-
plication
16. The application layer (layer 7) provides an interface for
software programs on
network hosts that have
established a communi-
cations channel through
the lower-level protocols
to exchange date.
17. An engineer uses a type of network adapter to con- Media converter
nect a fiber link to a router. The transceiver fits into
an optical interface on a layer 3 Ethernet router. Of (Media converters are lay-
the choices, which layer 1 implementation does the er 1 devices and are used
engineer utilize? to convert one cable type
to another. These compo-
nents alter the character-
istics of one type of cable
to match those of anoth-
er.)
18. A systems administrator is setting up a static IP for a /8
new server with a Class A IP scheme. Which netmask
lines up with a class A address? (The first octet for Class A
falls from 1 - 126 and the
netmask is 255.0.0.0 (/8).
Class A network address-
es support large numbers
of hosts—over 16 million.
However, there are only
126 Class A network ad-
dresses.)
and CORRECT Answers
1. Represents an alias for a host Cananonical Name
CNAME
2. Identifies authoritative DNS name servers for the Name Server
zone NS
3. Identifies an email server for the domain Mail Excahnger
MX
4. Identifies the primary DNS name server that is author- Start of Authority
itative for the zone and resolves names SoA
5. Resolves a host name to an IPv4 address Address IPv4
A
6. Resolves a host name to an IPv6 address Address IPv6
AAAA
7. Identifies a record that is providing a network service Service
or protocol SRV
8. Resolves an IP address to a host name in reverse Pointer
lookup zones PTR
9. Stores any free form text that may be needed to sup- Text
port other network services TXT
10. Physical Layer (layer 1) transmits and receives bits
from one node to another
node.
Layer 1 devices in-
clude transceivers, re-
peaters, hubs, media con-
verters, and modems
, CompTIA Network+ N10-008 UPDATED ACTUAL Questions
and CORRECT Answers
11. The Data Link layer (layer 2) transfers data between
nodes on the same logical
segment.
Layer 2 devices in-
clude network adapters
or network interface cards
(NICs), bridges, switches,
and wireless access points
(APs)
12. The Network layer (layer 3) moves data around a net-
work of networks, known
as an internetwork or the
internet.
The main device working
at layer 3 is the router,
as well as basic fire-
walls and layer 3 switch-
es, which combine the
function of switches and
routers. Multilayer switch-
es work at multiple lay-
ers, as their name sug-
gests, but in the example,
the network layer states it
covers only the routing of
data around an internet-
work.
The multilayer switch
would not go here as it
, CompTIA Network+ N10-008 UPDATED ACTUAL Questions
and CORRECT Answers
provides more than just
routing.
13. The Transport Layer (layer 4) ensures reliable data de-
livery, should the applica-
tion require it. It also iden-
tifies each type of network
application by assigning it
a port number.
Multilayer switches, usu-
ally working as load bal-
ancers, operate at the
transport layer, as well
as many types of securi-
ty applicates such as ad-
vanced firewalls and in-
trusion detection systems
(IDSs). These devices also
operate at higher layers of
the OSI model.
14. The Session Layer (Layer 5) represents the dialog con-
trol functions that admin-
ister the process of estab-
lishing the dialog, manag-
ing data transfer, and then
ending (or tearing down)
the session.
15. The Presentation layer (layer 6) transforms data between
the format required for
the network and the for-
, CompTIA Network+ N10-008 UPDATED ACTUAL Questions
and CORRECT Answers
mat required for the ap-
plication
16. The application layer (layer 7) provides an interface for
software programs on
network hosts that have
established a communi-
cations channel through
the lower-level protocols
to exchange date.
17. An engineer uses a type of network adapter to con- Media converter
nect a fiber link to a router. The transceiver fits into
an optical interface on a layer 3 Ethernet router. Of (Media converters are lay-
the choices, which layer 1 implementation does the er 1 devices and are used
engineer utilize? to convert one cable type
to another. These compo-
nents alter the character-
istics of one type of cable
to match those of anoth-
er.)
18. A systems administrator is setting up a static IP for a /8
new server with a Class A IP scheme. Which netmask
lines up with a class A address? (The first octet for Class A
falls from 1 - 126 and the
netmask is 255.0.0.0 (/8).
Class A network address-
es support large numbers
of hosts—over 16 million.
However, there are only
126 Class A network ad-
dresses.)
