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Wide Area Network (WAN) is a computer network that covers a broad areA. Which statement is correct for wide-area network (WAN)?（）
A . Limited in a single building, a group of buildings, or even a single room
B . Crosses metropolitan, regional, or national boundaries
C . Encompasses an entire city or metropolitan area and connects multiple local-area networks (LANs)
D . Connects client devices wireless protocol
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The network consists of a series of routers that are all configured for IBGP. Which one of thefollowing IBGP characteristics is true？（）
A . The IBGP routers must always be fully meshed
B . The IBGP routers can be in a different AS
C . The IBGP routers must be directly connected
D . The IBGP routers do not need to be directly connected
E . None of the other alternatives apply are true
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How should a router that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）
A . Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface.
B . Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.
C . Configure many sub-interfaces on the same subnet.
D . Configure a single sub-interface to establish multiple PVC connections to multiple remote router interfaces.
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As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）
A . using DHCP snooping
B . snooping the incoming 802.1Q VLAN tag
C . using CDP
D . snooping the CoS marking on the incoming frame
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A Network Engineer is reporting that one of the AIX hosts is generating too much ICMP traffic, which is slowing the network. Which of the following options is the most probable cause?（）
A . A large FTP job is in process.
B . A network interface was misconfigured.
C . The ping command is being used excessively.
D . A bad network interface card and/or network cable is in use.&e
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A computer is connected to the network through a NIC， which has a unique assignment that is called the Ethernet MAC address. Which layer of the OSI model does the MAC address use to communicate with the network？（）
A . network
B . application
C . session
D . data link
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While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate（）。
A . The port is experiencing errors
B . The port is administratively disabled
C . The port is blocked by spanning tree
D . The port has an active link with normal traffic activity
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On the network 131.1.123.0/27, what is the last IP address that can be assigned to a host?（）
A . 131.1.123.30
B . 131.1.123.31
C . 131.1.123.32
D . 131.1.123.33
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A network administrator needs to force a high-performance switch that is located in the MDF to become the root bridge for a redundant path switched network. What can be done to ensure that this switch assumes the role as root bridge?（）
A . Establish a direct link from the switch to all other switches in the network.
B . Assign the switch a higher MAC address than the other switches in the network have.
C . Configure the switch so that it has a lower priority than other switches in the network.
D . Configure the switch for full-duplex operation and configure the other switches for half-duplex operation.
E . Connect the switch directly to the MDF router， which will force the switch to assume the role of root bridge.
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How should arouter that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）
A . Configure a separate sub-interface for each PVC with a unique DLCI and subnet assigned to the sub-interface
B . Configure each Frame Relay circuit as apoint-to-point line to support multicast and broadcast traffic
C . Configure many sub-interfaces on the same subnet
D . Configure a single sub-interface to establish multiple PVC connections to multiple remote router interface
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Each machine in the internet is assigned a unique network address,called（）,that is used to identify the machine for communication purposes
A . A、MAC address
B . B、IP address
C . C、host address
D . D、domain name address
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As a network engineer， you responsibility is to install， configure， operate， and troubleshoot networks. In your company’s network， EIGRP is the routing protocol. You have just discovered that two routers restarted the neighbor relationship.Why？ （）
A . An update packet with init flag set from a known， already established neighbor relationship was received by one of the routers.
B . The counters were deleted.
C . The ARP cache was removed.
D . The IP EIGRP neighbor relationship was cleared manually.
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A Cisco Catalyst switch is part of the CIS network. As an experienced network administrator, you are thinking of filtering the traffic within VLANI00 with the use of a VACL named "test" on that switch. Which of the following command will enable that?（）
A . interface vlan 100 ip access-group test in
B . interface vlan 100 ip access-group test
C . vlan access-map test 100
D . vlan filter test vlan-list 100
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Which of the following commands is used to determine the route that the IP packets take to a network host?（）
A . route
B . netstat
C . iptrace
D . traceroute
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Which two are effects of connecting a network segment that is running 802.1D to a network segment that is running 802.1w？（）
A . the entire network switches to 802.1D and generates BPDUs to determine root bridfe status.
B . A migration delay of three seconds occurs when the port that is connected to the 802.1D bridge comes up
C . The entire network reconverges and a unique root briddge for the 802.1D segment， and a root bridge for the 802.1W segment， is chosen
D . the first hop 802.1w switch that is connected to the 802.1D runs entirely in 802.1DCompatibility mode and converts the BPDUs to either 802.1D or 802.1W segments of the network
E . Classic 802.1D timers， Such as forward Delay and Max-age， will only be used as a backup， and will not be necessary if point-to-point links and edge prots are properly identified and set by the administrator.
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A customer is looking for a scalable KVM solution that supports at least 512 servers and is manageable locally and through the IP network. Which IBM KVM solution should a specialist propose to this customer？（）
A . 1 x 8 console switch
B . 2 x 16 console switch
C . 2 x 8 Local Console Manager 2
D . 2 x 16 Global Console Manager 2
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A routing protocol is required that supports: 1)routing update authentication 2)an addressing scheme that conserves IP addresses 3)multiple vendors 4)a network with over 50 routers Which routing protocol fulfills these requirements（）。
A . RIPv1
B . RIPv2
C . EIGRP
D . OSPF
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A new system has been installed and the network connection is very slow. The network administrators are sure that the network port is set to 100 full duplex. What command will display the configured and current speed settings of the adapter?（）
A . lsdev
B . lsattr
C . entstat
D . ifconfig
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A user complains that the network printer is not printing. The system administrator knows there is a print queue for the network printer and needs to check on the queue. Which command is run?（）
A . netstat
B . lpstat
C . telinit
D . prtconf&e
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When you create a network implementation VLAN solution， what is one procedure that you should include in your plan？（）
A . Perform an incremental implementation of components.
B . Following the PPDIOO model， implement the entire solution and then test end-to-end to make sure that it is performing as designed.
C . Implement trunking of all VLANs to ensure that traffic is crossing the network as needed before performing any pruning of VLANs.
D . Test the solution on a segmented portion of a lab network prior to rolling out across the entire network.
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A user has no network connectivity. A check of the associated port indicates that the interface is up，the line protocol is down. Which item would most likely cause this problem？（）
A . Speed mismatch
B . Incorrect encapsulation
C . MTU set too low
D . Duplex mismatch
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While troubleshooting a routing problem on the company EIGRP network you discover that one ofthe routers is failing to establish adjacencies with its neighbor. What is a likely cause of thisproblem between neighbors？（）
A . The K-values do not match
B . The hold times do not match
C . The hello times do not match
D . The AS numbers do not match
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For the network 192.0.2.0/23, which option is a valid IP address that can be assigned to a host?（）
A . 192.0.2.0
B . 192.0.2.255
C . 192.0.3.255
D . 192.0.4.0
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A routing protocol is required that supports:1)routing update authentication2)an addressing scheme that conserves IP addresses3)multiple vendors4)a network with over 50 routers Which routing protocol fulfills these requirements（）。
A.RIPv1
B.RIPv2
C.EIGRP
D.OSPF
