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单选题
A small amount of spoofed packets are being sent across a network and a large amount of reply packets are being sent back to the network resource. Which of the following BEST describes this security threat?（）
A
Worm
B
Smurf
C
Logic Bomb
D
Man-in-the-middle
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Which CLI command ensures that RADIUS packets are being sent to and received from the RADIUS server?()
A. show radiusB. show aaa domain-mapC. show aaa statisticsD. show radius authentication server
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A small amount of spoofed packets are being sent across a network and a large amount of reply packets are being sent back to the network resource. Which of the following BEST describes this security threat?（）A.WormB.SmurfC.Logic BombD.Man-in-the-middle
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A network at a small business utilizes a star topology and is experiencing frequent collisionsamong data packets. Which of the following devices is MOST likely being used?()
A. Unmanaged switchB. Hardware firewallC. HubD. Managed switch
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An administrator wants to test the network MTU. Which of the following commands allows differentsize packets to be sent?()
A.netstatB.tracerouteC.nbtstatD.ping
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Which command will display EIGRP packets sent and received, as well as statistics on hello packets, updates, queries, replies, and acknowledgments?()
A. debug eigrp packetsB. show ip eigrp trafficC. debug ip eigrpD. show ip eigrp interfaces
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VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）A. provide service internetworkingB. support transparency for Layer 2 framesC. indicate destination as a connection identifierD. map to the DLCI in service internetworking
考题
When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork()。
A.0B.1C.2D.3E.4
考题
What is the result of entering the command port-channel load-balance src-dst-ip on an EtherChannel link？ （）A、Packets are distributed across the ports in the channel based on both the source and destination MAC addresses.B、Packets are distributed across the ports in the channel based on both the source and destination IP addresses.C、Packets are balanced across the ports in the channel based first on the source MAC address， then on the destination MAC address， then on the IP address.D、Packets are distributed across the access ports in the channel based first on the source IP address and then the destination IP addresses.
考题
What is the purpose of this command? ip route 0.0.0.0 0.0.0.0 serial0/0（）A、It configures a router to send all packets out interface serial 0/0.B、It configures a router to block routing updates from being sent out interface serial 0/0.C、It configures a router as a firewall, blocking all unauthorized packets from exiting serial 0/0.D、It configures a router to send all packets for unknown destination networks out interface serial 0/0.E、It configures a router to drop all packets for which the destination network is unknown.
考题
VOIP has been implemented at the main office of the Company network. Which two statements are true about voice packets in a LAN？（）A、 Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media portion of the VoIP communication. B、 Voice traffic data flow involves large volumes of large packets. C、 Because a packet loss involves a small amount of data, voice traffic is less affected by packet losses than traditional data traffic is. D、 Voice packets are encapsulated in TCP segments to allow for proper sequencing during delivery. E、 Voice packets are very sensitive to delay and jitter.
考题
Which CLI command ensures that RADIUS packets are being sent to and received from the RADIUS server?（）A、show radiusB、show aaa domain-mapC、show aaa statisticsD、show radius authentication server
考题
What is the result of issuing the frame-relay map ip 192.168.1.2 202 broadcast command?（）A、defines the source IP address that is used in all broadcast packets on DLCI 202B、defines the DLCI that is used for all packets that are sent to the 192.168.1.2 IP addressC、defines the destination IP address that is used in all broadcast packets on DLCI 202D、defines the DLCI on which packets from the 192.168.1.2 IP address are received
考题
VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）A、provide service internetworkingB、support transparency for Layer 2 framesC、indicate destination as a connection identifierD、map to the DLCI in service internetworking
考题
Which two statements about MPLS Label Distribution Protocol （LDP） are true？ （）A、LDP hello packets are sent to TCP 646.B、LDP session packets are sent to TCP 646.C、LDP session packets are sent to TCP 711.D、LDP hello packets are sent to TCP 711.E、LDP hello packets are sent to UDP 711.F、LDP hello packets are sent to UDP 646.
考题
An administrator wants to test the network MTU. Which of the following commands allows differentsize packets to be sent?（）A、netstatB、tracerouteC、nbtstatD、ping
考题
A network at a small business utilizes a star topology and is experiencing frequent collisionsamong data packets. Which of the following devices is MOST likely being used?（）A、Unmanaged switchB、Hardware firewallC、HubD、Managed switch
考题
A small amount of spoofed packets are being sent across a network and a large amount of reply packets are being sent back to the network resource. Which of the following BEST describes this security threat?（）A、WormB、SmurfC、Logic BombD、Man-in-the-middle
考题
多选题Which two statements about MPLS Label Distribution Protocol （LDP） are true？ （）ALDP hello packets are sent to TCP 646.BLDP session packets are sent to TCP 646.CLDP session packets are sent to TCP 711.DLDP hello packets are sent to TCP 711.ELDP hello packets are sent to UDP 711.FLDP hello packets are sent to UDP 646.
考题
单选题A college has a small campus where 25 faculty members are located. The faculty offices and student computers are currently on the same network. The faculty are concerned about students being able to capture packets going across the network and obtain sensitive material. What could a network administrator do to protect faculty network traffic from student connections?（）A
Install anti-virus software on the student computers.B
Put the faculty computers in a separate VLAN.C
Power down the switches that connect to faculty computers when they are not in use.D
Remove the student computers from the network and put them on a peer-to-peer network.E
Create an access list that blocks the students from the Internet where the hacking tolls are located.
考题
多选题VOIP has been implemented at the main office of the Company network. Which two statements are true about voice packets in a LAN？（）AVoice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media portion of the VoIP communication.BVoice traffic data flow involves large volumes of large packets.CBecause a packet loss involves a small amount of data, voice traffic is less affected by packet losses than traditional data traffic is.DVoice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.EVoice packets are very sensitive to delay and jitter.
考题
单选题What is the purpose of this command? ip route 0.0.0.0 0.0.0.0 serial0/0（）A
It configures a router to send all packets out interface serial 0/0.B
It configures a router to block routing updates from being sent out interface serial 0/0.C
It configures a router as a firewall, blocking all unauthorized packets from exiting serial 0/0.D
It configures a router to send all packets for unknown destination networks out interface serial 0/0.E
It configures a router to drop all packets for which the destination network is unknown.
考题
多选题Which two statements are true about voice packets in a LAN？ （Choose two.） （）AVoice traffic data flow involves large volumes of large packets.BBecause a packet loss involves a small amount of data， voice traffic is less affected by packet losses than traditional data traffic is.CVoice carrier stream utilizes Real-Time Transport Protocol （RTP） to carry the audio/media portion of VoIP communication.DVoice packets are very sensitive to delay and jitter.EVoice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.
考题
单选题Which command will display EIGRP packets sent and received, as well as statistics on hello packets, updates, queries, replies, and acknowledgments?（）A
debug eigrp packetsB
show ip eigrp trafficC
debug ip eigrpD
show ip eigrp interfaces
考题
单选题What happens when you issue the ping 172.19.102.2 count 5 command?（）A
ICMP echo requests are sent to 172.19.102.2 in five-millisecond intervals.B
ICMP echo requests are sent to 172.19.102.2 until five packets are dropped.C
ICMP echo requests are sent to 172.19.102.2 five times.D
ICMP echo requests are sent continuously to 172.19.102.2 for five seconds.
考题
单选题At only four-feet-eight inches and ninety-four pounds, a small frame being necessary for a gymnast. Mary Lou Retton captured the hearts of the American people and won a gold medal in the 1984 Olympic Games.A
a small frame being necessary for a gymnastB
having a small frame necessary for a gymnastC
being small-framed necessarily for gymnasticsD
a small frame necessary for gymnasticsE
because her small frame is necessarily for gymnasts
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