It is more complex than non-deterministic protocols.
Collisions can decrease network performance.
Deterministic media access protocols slow network performance.
CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.
a switched virtual interface
a trunk interface
a Cisco Express Forwarding instance
a routed port
In an attempt to conserve bandwidth and not forward useless
frames, Ethernet devices drop frames that are considered to
be runt (less than 64 bytes) or jumbo (greater than 1500 bytes)
The frame is broadcast to all other devices on the same network.
The frame is returned to the originating network device.
The frame is sent to the default gateway.
The frame is dropped.
The minimum Ethernet frame is 64 bytes. The maximum
Ethernet frame is 1518 bytes. A network technician must know
the minimum and maximum frame size in order to recognize
runt and jumbo frames.
Ethernet is the most common LAN protocol in the world. It
operates at Layer 1 and 2, but is not required for Internet
communication. The OSI model is used to describe how
networks operate. A WAN connects multiple sites located in
It defines the most common LAN type in the world.
It connects multiple sites such as routers located in different countries.
It is the required Layer 1 and 2 standard for Internet communication.
It defines a standard model used to describe how networking works.
Logical link control is implemented in software and enables the
data link layer to communicate with the upper layers of the
protocol suite. Logical link control is specified in the IEEE
802.2 standard. IEEE 802.3 is a suite of standards that define
the different Ethernet types. The MAC (Media Access Control)
sublayer is responsible for the placement and retrieval of
frames on and off the media. The MAC sublayer is also
responsible for adding a header and a trailer to the network
layer protocol data unit (PDU).
Logical link control is implemented in software.
Logical link control is specified in the IEEE 802.3 standard.
The LLC sublayer is responsible for the placement and retrieval of frames on and off the media.
The LLC sublayer adds a header and a trailer to the data.
The data link layer uses LLC to communicate with the upper layers of the protocol suite.
Any vendor selling Ethernet devices must register with the
IEEE to ensure the vendor is assigned a unique 24-bit code,
which becomes the first 24 bits of the MAC address. The last
24 bits of the MAC address are generated per hardware
device. This helps to ensure globally unique addresses for
each Ethernet device.
They are only routable within the private network.
They must be globally unique.
They are added as part of a Layer 3 PDU.
They have a 32-bit binary value.
A MAC address is composed of 6 bytes. The first 3 bytes are
used for vendor identification and the last 3 bytes must be
assigned a unique value within the same OUI. MAC addresses
are implemented in hardware. A NIC needs a MAC address to
communicate over the LAN. The IEEE regulates the MAC
A NIC only needs a MAC address if connected to a WAN.
The first three bytes are used by the vendor assigned OUI.
The ISO is responsible for MAC addresses regulations.
MAC addresses are implemented by software.
The purpose of an ARP request is to find the MAC address of
the destination host on an Ethernet LAN. The ARP process
sends a Layer 2 broadcast to all devices on the Ethernet LAN.
The frame contains the IP address of the destination and the
broadcast MAC address, FFFF.FFFF.FFFF.
A switch builds a MAC address table by inspecting incoming
Layer 2 frames and recording the source MAC address found
in the frame header. The discovered and recorded MAC
address is then associated with the port used to receive the
the source Layer 3 address of outgoing packets
the destination Layer 2 address of outgoing frames
the destination Layer 3 address of incoming packets
the source Layer 2 address of incoming frames
The MAC address of PC3 is not present in the MAC table of
the switch. Because the switch does not know where to send
the frame that is addressed to PC3, it will forward the frame to
all the switch ports, except for port 4, which is the incoming
The switch will forward the frame to all ports.
The switch will forward the frame only to port 2.
The switch will forward the frame only to ports 1 and 3.
The switch will discard the frame.
The switch will forward the frame to all ports except port 4.
When the store-and-forward switching method is used, the
switch receives the complete frame before forwarding it on to
the destination. The cyclic redundancy check (CRC) part of the
trailer is used to determine if the frame has been modified
during transit. In contrast, a cut-through switch forwards the
frame once the destination Layer 2 address is read. Two types
of cut-through switching methods are fast-forward and
Auto-MDIX is a feature that is enabled on the latest Cisco
switches and that allows the switch to detect and use whatever
type of cable is attached to a specific port.
a type of port on a Cisco switch
a type of Cisco switch
a feature that detects Ethernet cable type
an Ethernet connector type
When a network device wants to communicate with another
device on the same network, it sends a broadcast ARP
request. In this case, the request will contain the IP address of
PC2. The destination device (PC2) sends an ARP reply with its
SW1 will send an ARP reply with its Fa0/1 MAC address.
RT1 will send an ARP reply with the PC2 MAC address.
SW1 will send an ARP reply with the PC2 MAC address.
RT1 will send an ARP reply with its Fa0/0 MAC address.
PC2 will send an ARP reply with its MAC address.
to associate IP addresses to the wrong MAC address
to fill switch MAC address tables with bogus addresses
to flood the network with ARP reply broadcasts
to overwhelm network hosts with ARP requests
너는 정확하게 대답했다.
당신이 잘못 대답했습니다.
너는 시간이 없어.
점수 또는 평점을 저장하려면 로그인하거나 등록해야합니다.
텍스트에 적합한 오디오 언어를 설정하십시오.
단어를 강조 표시하여 학습을 향상시킵니다.
로그인 할 필요없이 퀴즈, 코스 및 플래시 카드를 재생할 수 있습니다. 그러나 점수를 저장하고 퀴즈, 코스 및 플래시 카드를 만들려면 로그인해야합니다. 오디오를 재생하려면 전문 계정에 로그인해야합니다.
학습을 한 차원 높여보십시오. 프로페셔널 계정으로 업그레이드하면 질문을 큰소리로 듣고 다른 많은 혜택을 누릴 수 있습니다.
귀하가 작성한 질문이나 답변에 대한 오디오가 생성됩니다.
많은 사람들이 그들이 배운 것을 듣고 더 잘 배웁니다. 외국어 학습을 위해 우리는 18 개 이상의 언어를 지원했습니다.
지원 언어로는 덴마크어, 네덜란드어, 영어, 프랑스어, 독일어, 아이슬란드 어, 이탈리아어, 일본어, 한국어, 노르웨이어, 폴란드어, 포르투갈어, 루마니아어, 러시아어, 스페인어, 스웨덴어, 터키어, 웨일스 어 등이 있습니다.
또한 단어를 소리내어 읽음으로써 자동 단어 단위 강조 기능을 지원합니다.
Apple App Store에서 볼 Topgrade 응용 프로그램을 선택하십시오.
Google Play에서 볼 수있는 Topgrade 앱을 선택합니다.