單項選擇題Which layer 2 protocol encapsulation type supports synchronous and asynchronous circuis and has built-in security mechanisms?()

A. Frame Relay
B. HDLC
C. x.25
D. PPP


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1.單項選擇題In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?()

A. after broken links are re-established
B. in an improperly implemented redundant topology
C. when upper-layer protocols require high reliability
D. during high traffic periods
E. when a dual ring topology is in use

2.單項選擇題Which command sets and automatically encrypts the privileged enable mode password?()

A. enbale password c1sco
B. secret enable c1sco
C. password enable c1sco
D. enable secret c1sco

3.單項選擇題Which statement is true?()

A. An IPv6 address is 64 b long and is represented as hexadecimal characters.
B. An IPv6 address is 32 b long and is represented as decimal digits.
C. An IPv6 address is 128 b long and is represented as decimal digits.
D. An IPv6 address is 128 b long and is represented as hexadecimal characters.

4.單項選擇題When upgrading the IOS image, the network administrator receives the exhibited error message. What could be the cause of this error?()

A. The new IOS image is too large for the router flash memory.
B. The TFTP server is unreachable from the router.
C. The new IOS image is not correct for this router platform.
D. The IOS image on the TFTP server is corrupt.
E. There is not enough disk space on the TFTP server for the IOS image.

5.單項選擇題

This graphic shows the results of an attempt to open a Telnet connection to router ACCESS1 from router Remote27. Which of the following command sequences will correct this problem? ()

A. ACCESS1(config)# line console 0 ACCESS1(config-line)# password cisco
B. Remote27(config)# line console 0 Remote27(config-line)# login Remote27(config-line)# password cisco
C. ACCESS1(config)# line vty 0 4 ACCESS1(config-line)# login ACCESS1(config-line)# password cisco
D. Remote27(config)# line vty 0 4 Remote27(config-line)# login Remote27(config-line)# password cisco
E. ACCESS1(config)# enable password cisco
F. Remote27(config)# enable password cisco

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Which statement is true, as relates to classful or classless routing?()

題型:單項選擇題

A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?()

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At which layer of the OSI model is RSTP used to prevent loops?()

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Which command encrypts all plaintext passwords?()

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After the show ip route command has been entered,the follwing routes are displayed.Which route will not be entered into the routing table of a neighboring router?()

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Which command displays the CHAP authentication process as it occurs between two routers?()

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An administrator must assign static IP addresses to the servers in a network.For network 192.168.20.24/29, the router is assigned the first usable host address while the sales server is given the last usable host address. Which of the following should be entered into the IP propertied box for the sales server?()

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Which command is used to display the collection of OSPF link states?()

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Which name describes an IPV6 host-enable tunneling technique that uses IPV4 UDP,does not require dedicated gateway tunnels,and can pass through existing IPV4 NAT gateways?()

題型:單項選擇題