更多"What dose a Layer 2 switch use to d"的相关试题:
[单项选择]What does a Layer 2 switch use to decide where to forward a received frame?（）
A. source MAC address
B. source IP address
C. source switch port
D. destination IP address
E. destination port address
F. destination MAC address
[单项选择]What dose the last paragraph imply
A. Damage to software is caused by those whose jobs require at least some access to the computer
B. The writer of the program is the one responsible for its misuse
C. Measures taken to 15rotect soft ware and data is useless
D. Programs written for an individual company are far more valuable to abuse and accident than standard software packages produced by external suppliers
[单项选择]What dose "education quite often produces surprises" mean
A. Education makes people learn a lot of new things outside the textbooks.
B. Education is more open-ended and all-inclusive.
C. Education knows no bounds.
D. Education is a lifelong process
[单项选择]What dose the author say is especially important about the Sun at the present time
A. It appears yellow.
B. It always remains the same.
C. It has a short history.
D. It is too cold.
[单项选择]At which layer of the OSI model dose PPP perform?（）
A. Layer 3
B. Layer 4
C. Layer 2
D. Layer 5
[多项选择]What are some common layer 2 encapsulations for a WAN link?（）
A. Ethernet
B. PPP
C. Token Ring
D. HDLC
E. Frame Relay
F. POTS
[多项选择]What are two advantages of Layer 2 Ethernet switches over hubs?（）
A. decreasing the number of collision domains
B. filtering frames based on MAC addresses
C. allowing simultaneous frame transmissions
D. increasing the size of broadcast domains
E. increasing the maximum length of UTP cabling between devices
[单项选择]What will happen if the dust aerosol layer develops
A. The earth will get extremely hot.
B. The balance between the amount of heat absorbed from the Sun and the amount lost could hardly be maintained.
C. The light of the Sun could no longer reach the surface of the Earth.
D. Infrared radiation could no longer be transmitted from the Earth to outer space.
[单项选择]In a Bridged 1483 network, what Layer 2 encapsulations are passed between the DSL bridge and the ERX?（）
A. single ATM header
B. single Ethernet header
C. ATM header followed by a PPP header
D. ATM header followed by an Ethernet header
[单项选择]Where does Layer2 de-encapsulation occur on the ERX Edge Router？（）
A. on the SRP
B. on the I/O adapter
C. on the egress line module
D. on the ingress line module
[单项选择]What is the use of MSDP across multiple PIM domains?（）
A. It scopes multicast traffic.
B. It prevents multicast routing loops.
C. It advertises active multicast sources.
D. It advertises RPs to all downstream routers.
[多项选择]What are two use cases enabled by IF-MAP Federation?（）
A. Users authenticated to one Junos Pulse Access Control Service can transparently access resources protected by another Junos Pulse Access Control Service.
B. Users authenticated to a Junos Pulse Access Control Service can transparently access resources protected by a Junos Pulse Secure Access Service.
C. Remote access users authenticated to a Junos Pulse Secure Access Service can transparently access resources protected by a Junos Pulse Access Control Service.
D. Remote access users authenticated to one Junos Pulse Secure Access Service can transparently access resources protected by another Junos Pulse Secure Access Service.
[单项选择]What does a Layer 2 switch do if it receives a frame with a destination MAC address that is not found in its MAC address table?（）
A. The frame is dropped.
B. The frame is addressed with a broadcast MAC address and sent out all ports.
C. The frame is sent out all ports except the receiving port.
D. An ARP request is sent out all ports except the receiving port.
E. A destination unreachable message is sent back to the source address.
F. None of the above.
[单项选择]What do chimps use to hunt, according to the new finding
A. Spears
B. Stones
C. Fire
[单项选择]What is implied by saying "a layer of soil acts as a sponge" (Para. 2)
A. Soil can be used to clean things.
B. Soil can store water and give it up when needed.
C. Soil is all elastic material.
D. Soil can provide water.
