單項(xiàng)選擇題Which component of VPN technology ensures that data can be read only by its intended recipient?()

A. data integrity
B. encryption
C. key exchange
D. authentication


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2.單項(xiàng)選擇題When a host transmits data across a network to another host, which process does the data go through?()

A. standardization
B. conversion
C. encapsulation
D. synchronization

3.單項(xiàng)選擇題A network admin wants to know every hop the packets take when he accesses cisco.com. Which command is the most appropriate to use?()

A. path cisco.com
B. debug cisco.com
C. trace cisco.com
D. traceroute cisco.com

4.單項(xiàng)選擇題Which line from the output of the show ip interface command indicates a layer 1 problem?()

A. Serial0/1 is up, line protocol is down
B. Serial0/1 is down, line protocol is down
C. Serial0/1 is up, line protocol is up
D. Serial0/1 is administratively down, line protocol is down

5.單項(xiàng)選擇題Which statement about IPv6 is true?()

A. Addresses are not hierarchical and are assigned at random.
B. Only one IPv6 address can exist on a given interface.
C. There are 2.7 billion addresses available.
D. Broadcasts have been eliminated and replaced with multicasts.

6.單項(xiàng)選擇題Which statement about RIPng is true?()

A. RIPng allows for routes with up to 30 hops.
B. RIPng is enabled on each interface separately.
C. RIPng uses broadcasts to exchange routes.
D. There can be only one RIPng process per router.

7.單項(xiàng)選擇題Which term describes the process of encapsulating IPv6 packets inside IPv4 packets?()

A. tunneling
B. hashing
C. routing
D. NAT

8.單項(xiàng)選擇題What is the first 24 bits in a MAC address called?()

A. NIC
B. BIA
C. OUI
D. VAI

9.單項(xiàng)選擇題When is it necessary to use a public IP address on a routing interface?()

A. Connect a router on a local network.
B. Connect a router to another router.
C. Allow distribution of routes between networks.
D. Translate a private IP address.
E. Connect a network to the Internet.

10.單項(xiàng)選擇題What will happen if a private IP address is assigned to a public interface connected to an ISP?()

A. Addresses in a private range will be not routed on the Internet backbone.
B. Only the ISP router will have the capability to access the public network.
C. The NAT process will be used to translate this address in a valid IP address.
D. Several automated methods will be necessary on the private network.
E. A conflict of IP addresses happens, because other public routers can use the same range.

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How are VTP advertisements delivered to switches across the network?()

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What is the subnetwork address for a host with the IP address 201.100.5.68/28?()

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When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()

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While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?()

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At which layer of the OSI model dose PPP perform?()

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You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the max number of subnets.Which network address and subnet mask meet this requirement?()

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