1.which of the following types of packets will be allowed entry when a serial interface's inbound access list has been configured to prohibit entry for tcp and udp ports 21, 23 and 25? (select three options.)
2.one of the trainees assigned to you want to know which services use tcp. what can you tell him? (select three options.)
3.which of the following network masks would you use to reduce any wastage of ip addresses in point-to- point wan links on a network that supports vlsm?
4.how would you configure a router to avoid situations such as split horizon issues hampering routing updates on a frame relay network?
a. configure a separate sub-interface for each pvc with a unique dlci and subnet assigned to the subinterface.
5.with regard to isdn, which of the following are true? (choose all that apply.)
a. legacy ddr can use port information to define interesting traffic.
6.which of the following is a characteristic of link-state protocols?
a. a network topology change generates an update that is broadcast to every router on
7.what is the term associated with synchronizing the routing tables after a topology change occurs?
8.which of the following must be determined first by the router in order to route the data?
a. the distance metric of the data
9.you are a technician at abc. abc has the subnet/mask of 172.29.100.0/26 set aside for small remote locations. each location will have 5 ip devices connected to the network. which vlsm mask will provide the minimum number of hosts you require?
10.you are a trainee technician at abc. your instructor shows you the following route summarization entry:
11.which command enables an etherchannel bundle on a catalyst 2900xl switch?
a. port group
12.which two statements about dynamic vlans are true? (choose two)
a. each switch port is assigned to a specific vlan.
13.which statement is correct about 802.1q trunking? (select all that apply)
a. both switches must be in the same vtp domain.
14.you need to take advantage of fastethernet ports. which two actions avoid configuration problems that cause the port to be automatically disabled? (choose two)
a. allow some ports in a channel to be disabled.
15.what is the cause of jitter?
a. variable queue delays
16.regarding dhcp, dhcp relay and dhcp server are mutually exclusive.
a. none of the choices.
17.a lapd address field can be 1 or 2 bytes long.
18.which of the following are valid functions of the lock dte modem attribute (choose all that apply)?
a. disable uart.
19.which of the following are not the valid types of atm addresses (choose all that apply)?
20.which of the following are not the valid types of x.25 plp packet fields (choose all that apply)?
a. user data
21.you are a technician at abc.com. your newly appointed abc trainee wants to know what the similarities between topology diagrams and network configuration tables are.
a. both share few components.
22.you are a technician at abc.com. your newly appointed abc trainee wants to know what the default action for the output of debug and system error messages is. what would your reply be?
a. output goes to the remote console if logging is off.
23.you are the network administrator at abc.com. abc has a switched network. you want to control the designation of the spanning-tree root bridge in the abc network. what should you do?
a. by enabling uplink-fast on the ports of the desired switch.
24.you are a technician at abc. you receive a report from several abc users who complain that they get slow responses when sending and receiving email, especially when browsing the internet. you investigate the complaint by checking the output of a ping command issued from her computer and find that it indicates intermitted success and failures messages, when attempting to contact the email server. a tracert to the corporate internet gateway router shows high latency and occasional time out messages.
a. bottom-up approach
25.you are a technician at abc.com. your newly appointed abc trainee wants to know what features make ospf more suitable than rp in large network installations. what would your reply be? (choose all that apply.)
a. diffusing update algorithm
26.you are the network administrator at abc. you are troubleshooting a network problem. you want to trace the route to a unix workstation that you want to reach through the internet. however, traceroute does not work.
a. access-list 101 permit udp any any
27.what does the bgp backdoor command do?
a. it changes the distance of an ibgp route to 20.
28.which of the following dns resource records is not valid?
29.which of the following features is provided by rip v2 that were previously not possible with rip v1? (choose all that apply.)
a. classless routing and split-horizon.
30.which of the following statements is valid when taking custom queuing into account?
a. custom queuing has the ability to restrict a particular type of traffic to a given bandwidth not matter what is load is like on that link.