HCIA-Access(Huawei Certified ICT Associate- Access) 試験
Question No : 1
Which layer of the OSI reference model does Ethernet switches work in ?
Question No : 2
In Ethernet, according to what address to distinguish the different devices?
Question No : 3
Fast Ethernet standard rate has 100Base-TX, 100Base-T4 and 100Base-FX.
Question No : 4
MAC address of computer network card is unified assigned to each manufacturer by IETF, globally unique.
Question No : 5
MAC address is usually purchased by each manufacturer from IEEE, but can also be specified on their own.
Question No : 6
LAN computers in judging the received broadcast frame is the method whether they should receive, judge whether the source MAC address of the frame is the same as the hardware address of the machine.
Question No : 7
Ethernet technology is a widely used technology, according to the different transmission rate, there are three classes of 10M, 100M, 1000M, including 10M and 100M Ethernet transmission medium is commonly used for twisted pair, but due to high speed of 1000M Ethernet ,the transmission medium must use optical fiber.
Question No : 8
LAN is generally transmitted in the form of bus-based, the most commonly used protocol is carrier sense and collision detection CSMA/CD protocol.
Question No : 9
Part of the field in the IP packet is dedicated to the description of the life cycle of the message, that is TTL value, how much is its maximum value ?
Question No : 10
Which layer of the OSI model does the router manly work in ?
Question No : 11
Link layer defines the electrical, mechanical process and function, to realize line activation, keeping and demolition on both ends of system connection.
Question No : 12
TTL is mainly to prevent IP packet loop forwarding in the network, wasting network bandwidth.
Question No : 13
MAC address is composed of 48 bit, usually showed in 12 hexadecimal, the first six hexadecimal digits by the IEEE in charge of unified distribution, used to determine the uniqueness of the manufacturers, the last six hexadecimal digits by the manufacturers responsible for their own management.
Question No : 14
In the routing table item, for the same destination address and mask, only corresponding to a unique nexthop and outbound interface.
Question No : 15
Routing in the routing table can not exist mask of 0.0.0.0 routing entry.