IT업계에서 자신만의 위치를 찾으려면 자격증을 많이 취득하는것이 큰 도움이 될것입니다.CCNA Wireless 640-722시험은 아주 유용한 시험입니다. CCNA Wireless 640-722시험출제경향을 퍼펙트하게 연구하여 Pass4Test에서는 CCNA Wireless 640-722시험대비덤프를 출시하였습니다. Pass4Test에서 제공해드리는 CCNA Wireless 640-722시험덤프는 시장에서 판매하고 있는 CCNA Wireless 640-722덤프중 가장 최신버전덤프로서 덤프에 있는 문제만 공부하시면 시험통과가 쉬워집니다.
NO.1 The IEEE 802.11n standard provides 40-MHz channels, improved MAC
efficiency, and MIMO.
Which three elements define the 802.11n implementation
of MIMO? (Choose three.)
A. channel bonding
B. dynamic frequency
selection
C. maximal ratio combining
D. packet aggregation
E. spatial
multiplexing
F. transmit beam forming
Answer: C,E,F
NO.2 A
controller is connected to a Cisco Catalyst switch. The switch port
configuration looks like
this:
interface GigabitEthernet 1 /
0/10
switchport
switchport trunk encapsulation dot1q
switchport trunk
allowed vlan 1,20,30,50
switchport trunk native vlan 20
switchport mode
trunk
Which controller CLI command assigns its management interface to the
native VLAN interface of the
Cisco Catalyst switch?
A. config interface
vlan management 0
B. config interface vlan management 1
C. config
interface vlan management 20
D. config interface vlan management 30
E.
config interface vlan management 50
Answer: A
NO.3 Which statement about
an infrastructure basic service set is true according to IEEE
802.11
specifications?
A. The set also is called an ad hoc network.
B.
The BSSID is generated from the first wireless client that starts up in the
IBSS.
C. The set enables the use of ESS.
D. No signals are relayed from
one client to another client.
Answer: C
NO.4 Which two factors must be
considered when evaluating an RF interferer for severity? (Choose
two.)
A.
distance from the AP
B. dBm
C. the type of security crack being used
D.
duty cycle
E. number of interfering IP stations in the cell
F. duplicate
SSID
Answer: B,D
NO.5 Which two items are needed to discover the IP
address of a new Cisco Aironet 1260
autonomous AP that just finished booting?
(Choose two.)
A. username = "cisco" and password = "cisco"
B. username =
"Admin" and password = "Cisco"
C. username=Cisco and password=Cisco
D.
show int vlan1
E. show int bvi1
F. show int gigabitethernet0
G. show
int radio0-802.11n
H. show int radio1-802.11n
Answer: C,E
NO.6
Which two statements about WiMAX technology are true? (Choose two.)
A. WiMAX
is defined by 802.11i.
B. Typically, fixed WiMAX networks have a higher-gain
directional antenna installed near the client.
C. WiMAX is capable of working
as a long-range system over several miles.
D. WiMAX works only for licensed
frequencies.
Answer: B,C
NO.7 Which governing body analyzes the
applications and environments in which wireless networks
are used?
A.
EIRP
B. ETSI
C. FCC
D. IEEE
E. WiFi Alliance
Answer:
D
NO.8 Which description best describes upfade in a multipath
environment?
A. In this situation, multiple signal paths are not sent at
exactly the same time. The receiver receives
a positive crest on the primary
signal and a negative crest on the secondary signal.
B. In this situation,
the multiple signal paths are distorted and difficult to understand.
C. In
this situation, the multiple signal paths are weaker than they should be because
the signals are
out of phase with each other.
D. In this situation, the
signal is stronger than it should be because multiple signal paths
are
received twice at exactly the same time, which results in the multiple
signals being in-phase.
Answer: D