思科認證考試章節(jié)練習(2019.04.29)

A.it is a layer 2 messaging protocol which maintains vlan configurations across network.
B.it includes an 8-bit field which specifies the priority of a frame.
C.it is used exclusively for tagging vlan frames and dose not address network reconvergence following switched network topology changes.
D.it modifies the 802.3 frame header,and thus requires that the FCS be recomputed.
E.it is a trunking protocol capable of carring untagged frames.

A.They do not receive unique IP addresses
B.RADIUS or LDAP is required in order to assign IP addresses
C.They are assigned addresses from the internal DHCP pool
D.Their traffic appears to originate from the originating host network

A. The local IP address of Router A is 10.1.0.6.
B. The local IP address of Router A is 10.1.0.20.
C. If Ethernet 0/2 goesdown， the standby router will take over.
D. When Ethernet 0/3 of RouterA comes back up， the priority will become 105.
E. Router A will assume the active state if its priority is the highest.

A. LSR
B. LSAck
C. LSU
D. DD
E. Hello

A. Layer 2 TTL
B. Layer 3 TTL
C. Layer 3 source address
D. Layer 3 destination address

A.A wireless repeater is an access point that is not connected to the wired LAN.
B.The repeater feature is only available in lightweight access point topologies.
C.The SSID of the root access point must be configured on the repeater access point.
D.This topology requires a 10 - 15 percent overlap between a wired access point and the wireless repeater.
E.This topology requires a 15 - 25 percent overlap between a wired access point and the wireless repeater.
F.To avoid interference， the repeater access point must use a different channel from what the root access point uses.

A.the time required from receipt of the incoming frame， until the frame/packet has been queued for transmission
B.the time taken for a single packet to traverse the physical medium from one end to the other
C.the time taken to place a frame on the physical medium for transport
D.the time spent for a packet to reside in the output queue of a router

A.the number of computer blades in the system
B.the number of interfaces sharing the uplinks
C.the driver version on the OS running on the computer blade
D.the number of uplinks between I/O Module and Fabric Interconnect

A.windows 2000 sp4
B.windows server 2003
C.solaris 10
D.vista
E.windows xp pro

A.Disable post scan
B.Use SSH or SSL
C.Enable trust levels
D.Deny echo replies on all edge routers