4A0-100 実際試験問題と解答 - 模擬練習 - 受験自信を増やす

Question No : 1
What characteristic of IP addressing creates a hierarchical network?

A.All hosts on all networks must have unique host numbers.
B.IP addresses identify a host and the network on which it resides.
C.Clients are assigned 32-bit addresses and servers 64-bit addresses.
D.Router, switch and host addresses are drawn from unique address classes.

正解:

Question No : 2
Public IP address spaces are distributed by which of the following organizations?

A.Network Solutions INC
B.IANA
C.IETF
D.ITU-T
E.IEEE

正解:

Question No : 3
A Class C network is defined by a:

A.32-bit network prefix.
B.24-bit network prefix.
C.16-bit network.
D.8-bit network.

正解:

Question No : 4
Hosts in the same IP network share which common address feature?

A.Same host numbers.
B.Same IP address.
C.First two bits of the IP address are set to 01.
D.Same network prefix.

正解:

Question No : 5
The physical networks connecting two PCs to the internet are DSL and PPP respectively.
Which layer will enable the two PCs to communicate?

A.Layer 1
B.Layer 2
C.Layer 3
D.Layer 4

正解:

Question No : 6
Which of the following is a characteristic of the IP layer?

A.Provides an unreliable, connectionless data transmission service.
B.Provides a mechanism for flow control.
C.Verifies the integrity of all received datagrams.
D.Provides services equivalent to the OSI data link layer.

正解:

Question No : 7
Which of the following statements is TRUE of Layer 3 addressing?

A.Internet devices on the same network can have the same Layer 3 address in different broadcast domains.
B.Every Host device must have a unique Layer 3 address in order to access the Internet.
C.Internet devices need unique Layer 3 addresses to communicate directly with upper layers.
D.A router must have only one address to allow it to be uniquely identified.

正解:

Question No : 8
What distance is supported using CAT-5 cabling for 10/100/1000 TX?

A.100 m.
B.500 m.
C.1 Km.
D.10 Km.

正解:

Question No : 9
Which of the following Ethernet rates requires an optical cable to operate?

A.10 Mb/s Ethernet.
B.100 Mb/s Ethernet.
C.1000 Mb/s Ethernet .
D.There are copper and optical versions possible for all of these Ethernet data rates.

正解:

Question No : 10
What is the effective maximum rate of data transmission on a 10 Mbps full-duplex Ethernet link?

A.5 Mbps.
B.10 Mbps.
C.15 Mbps.
D.20 Mbps.

正解:

Question No : 11
What is the meaning of carrier sense in the CSMA/CD algorithm?

A.The host will retransmit the frame if it detects a collision during transmission.
B.The host is able to detect the transmission speed of the Ethernet switch port to which the host is connected.
C.The host will only transmit data when it detects that no other devices are transmitting.
D.The host will only transmit upon a timer expiry.
E.The host will only transmit when it receives the token.

正解:

Question No : 12
Which of the following is true of Ethernet half-duplex transmission?

A.Half-duplex transmission is less efficient because the frame MTU is smaller.
B.Half-duplex transmission is only 30-40% efficient because of collisions.
C.Ethernet switches support half-duplex transmission only.
D.All of the above.

正解:

Question No : 13
Which of the following type of addressing scheme delivers information from one source to all devices who are members of a specific group?

A.Anycast.
B.Multicast.
C.Broadcast.
D.Unicast.

正解:

Question No : 14
In MAC Address 00-20-60-CE-2B-28, which part is the Organizationally Unique Identifier (OUI)?

A.2B-28
B.00-20
C.CE-2B-28
D.00-20-60

正解:

Question No : 15
How is Ethernet II different from Ethernet 802.3?

A.Ethernet 802.3 can only be used on point-to-point links, while Ethernet II can be used on broadcast networks.
B.In Ethernet II the 2 bytes after the source MAC address is used as a type indicator. In Ethernet 802.3 these two bytes indicate the length of the frame.
C.In Ethernet 802.3, the 2 bytes after the source MAC address is used as a type indicator. In Ethernet II these two bytes indicate the length of the frame.
D.Ethernet II and Ethernet 802.3 are two different names for the same protocol

正解:

Alcatel Lucent 4A0-100 問題練習