IT-Passports.comの問題集を買ったら1年間の無料オンラインのアップデートを提供する一方で、試験に失敗したら、お客様に全額で返金いたします。
Ciscoの642-813認定試験に受かりたいのなら、適切なトレーニングツールを選択する必要があります。Ciscoの642-813認定試験に関する研究資料が重要な一部です。我々IT-Passports.comはCiscoの642-813認定試験に対する効果的な資料を提供できます。IT-Passports.comのIT専門家は全員が実力と豊富な経験を持っているのですから、彼らが研究した材料は実際の試験問題と殆ど同じです。IT-Passports.comは特別に受験生に便宜を提供するためのサイトで、受験生が首尾よく試験に合格することを助けられます。
試験番号：642-813問題集
試験科目：Cisco 「Implementing Cisco IP Switched Networks」
問題と解答：全227問
Ciscoの642-813の認定試験に合格すれば、就職機会が多くなります。IT-Passports.comはCiscoの642-813の認定試験の受験生にとっても適合するサイトで、受験生に試験に関する情報を提供するだけでなく、試験の問題と解答をはっきり解説いたします。
恐いCiscoの642-813試験をどうやって合格することを心配していますか。心配することはないよ、IT-Passports.comのCiscoの642-813試験トレーニング資料がありますから。この資料を手に入れたら、全てのIT認証試験がたやすくなります。IT-Passports.comのCiscoの642-813試験トレーニング資料はCiscoの642-813認定試験のリーダーです。
IT-Passports.comのCiscoの642-813試験トレーニング資料は必要とするすべての人に成功をもたらすことができます。Ciscoの642-813試験は挑戦がある認定試験です。現在、書籍の以外にインターネットは知識の宝庫として見られています。IT-Passports.com で、あなたにあなたの宝庫を見つけられます。IT-Passports.com はCiscoの642-813試験に関連する知識が全部含まれていますから、あなたにとって難しい問題を全て解決して差し上げます。
購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.it-passports.com/642-813.html
NO.1 Refer to the exhibit.
What information can be derived from the output?
A. Interfaces FastEthernet3/1 and FastEthernet3/2 are connected to devices that are sending BPDUs
with a superior root bridge parameter and no traffic is forwarded across the ports. After the sending of
BPDUs has stopped, the interfaces must be shut down administratively, and brought back up, to resume
normal operation.
B. Devices connected to interfaces FastEthernet3/1 and FastEthernet3/2 are sending BPDUs with a
superior root bridge parameter, but traffic is still forwarded across the ports.
C. Devices connected to interfaces FastEthernet3/1 and FastEthernet3/2 are sending BPDUs with a
superior root bridge parameter and no traffic is forwarded across the ports. After the inaccurate BPDUs
have been stopped, the interfaces automatically recover and resume normal operation.
D. Interfaces FastEthernet3/1 and FastEthernet3/2 are candidates for becoming the STP root port, but
neither can realize that role until BPDUs with a superior root bridge parameter are no longer received on
at least one of the interfaces.
Answer: C
Cisco 642-813認証試験 642-813 642-813認定試験
NO.2 What two steps can be taken to help prevent VLAN hopping? (Choose two.)
A. Place unused ports in a common unrouted VLAN.
B. Enable BPDU guard.
C. Implement port security.
D. Prevent automatic trunk configurations.
E. Disable Cisco Discovery Protocol on ports where it is not necessary.
Answer: AD
Cisco 642-813認定証 642-813認定試験 642-813認定資格
NO.3 Which description correctly describes a MAC address flooding attack?
A. The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking
device then becomes the destination address found in the Layer 2 frames sent by the valid network
device.
B. The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking
device then becomes the source address found in the Layer 2 frames sent by the valid network device.
C. The attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The
switch then forwards frames destined for the valid host to the attacking device.
D. The attacking device spoofs a source MAC address of a valid host currently in the CAM table.
The switch then forwards frames destined for the valid host to the attacking device.
E. Frames with unique, invalid destination MAC addresses flood the switch and exhaust CAM table space.
The result is that new entries cannot be inserted because of the exhausted CAM table space, and traffic is
subsequently flooded out all ports.
F. Frames with unique, invalid source MAC addresses flood the switch and exhaust CAM table space.
The result is that new entries cannot be inserted because of the exhausted CAM table space, and traffic is
subsequently flooded out all ports.
Answer: F
Cisco 642-813認定証 642-813 642-813 642-813
NO.4 Refer to the exhibit.
The web servers WS_1 and WS_2 need to be accessed by external and internal users. For security
reasons, the servers should not communicate with each other, although they are located on the same
subnet. However, the servers do need to communicate with a database server located in the inside
network. Which configuration isolates the servers from each other?
A. The switch ports 3/1 and 3/2 are defined as secondary VLAN isolated ports. The ports connecting to
the two firewalls are defined as primary VLAN promiscuous ports.
B. The switch ports 3/1 and 3/2 are defined as secondary VLAN community ports. The ports connecting to
the two firewalls are defined as primary VLAN promiscuous ports.
C. The switch ports 3/1 and 3/2 and the ports connecting to the two firewalls are defined as primary VLAN
promiscuous ports.
D. The switch ports 3/1 and 3/2 and the ports connecting to the two firewalls are defined as primary VLAN
community ports.
Answer: A
Cisco 642-813 642-813参考書 642-813
NO.5 What does the global configuration command ip arp inspection vlan 10-12,15 accomplish?
A. validates outgoing ARP requests for interfaces configured on VLAN 10, 11, 12, or 15
B. intercepts all ARP requests and responses on trusted ports
C. intercepts, logs, and discards ARP packets with invalid IP-to-MAC address bindings
D. discards ARP packets with invalid IP-to-MAC address bindings on trusted ports "Pass
Answer: C
Cisco 642-813 642-813 642-813過去問
NO.6 Refer to the exhibit.
Which four statements about this GLBP topology are true? (Choose four.)
A. Router A is responsible for answering ARP requests sent to the virtual IP address.
B. If router A becomes unavailable, router B forwards packets sent to the virtual MAC address of router A.
C. If another router is added to this GLBP group, there would be two backup AVGs.
D. Router B is in GLBP listen state.
E. Router A alternately responds to ARP requests with different virtual MAC addresses.
F. Router B transitions from blocking state to forwarding state when it becomes the AVG.
Answer: ABDE
Cisco 642-813参考書 642-813 642-813認定試験
NO.7 Refer to the exhibit.
Host A has sent an ARP message to the default gateway IP address 10.10.10.1. Which statement is true?
A. Because of the invalid timers that are configured, DSw1 does not reply.
B. DSw1 replies with the IP address of the next AVF.
C. DSw1 replies with the MAC address of the next AVF.
D. Because of the invalid timers that are configured, DSw2 does not reply.
E. DSw2 replies with the IP address of the next AVF.
F. DSw2 replies with the MAC address of the next AVF.
Answer: F
Cisco認定試験 642-813 642-813 642-813認定資格
NO.8 Refer to the exhibit.
GLBP has been configured on the network. When the interface serial0/0/1 on router R1 goes down, how
is the traffic coming from Host1 handled?
A. The traffic coming from Host1 and Host2 is forwarded through router R2 with no disruption.
B. The traffic coming from Host2 is forwarded through router R2 with no disruption. Host1 sends an ARP
request to resolve the MAC address for the new virtual gateway.
C. The traffic coming from both hosts is temporarily interrupted while the switchover to make R2 active
occurs.
D. The traffic coming from Host2 is forwarded through router R2 with no disruption. The traffic from Host1
is dropped due to the disruption of the load balancing feature configured for the GLBP group.
Answer: A
Cisco 642-813参考書 642-813 642-813認証試験
NO.9 Which statement is true about Layer 2 security threats?
A. MAC spoofing, in conjunction with ARP snooping, is the most effective counter-measure against
reconnaissance attacks that use Dynamic ARP Inspection to determine vulnerable attack points.
B. DHCP snooping sends unauthorized replies to DHCP queries.
C. ARP spoofing can be used to redirect traffic to counter Dynamic ARP Inspection.
D. Dynamic ARP Inspection in conjunction with ARP spoofing can be used to counter DHCP snooping
attacks.
E. MAC spoofing attacks allow an attacking device to receive frames intended for a different network host.
F. Port scanners are the most effective defense against Dynamic ARP Inspection.
Answer: E
Cisco 642-813練習問題 642-813 642-813
NO.10 Refer to the exhibit.
An attacker is connected to interface Fa0/11 on switch A-SW2 and attempts to establish a DHCP server
for a man-in-middle attack. Which recommendation, if followed, would mitigate this type of attack?
A. All switch ports in the Building Access block should be configured as DHCP trusted ports.
B. All switch ports in the Building Access block should be configured as DHCP untrusted ports.
C. All switch ports connecting to hosts in the Building Access block should be configured as DHCP trusted
ports.
D. All switch ports connecting to hosts in the Building Access block should be configured as DHCP
untrusted ports.
E. All switch ports in the Server Farm block should be configured as DHCP untrusted ports.
F. All switch ports connecting to servers in the Server Farm block should be configured as DHCP
untrusted ports.
Answer: D
Cisco 642-813 642-813 642-813参考書 642-813認証試験 642-813練習問題
NO.11 Why is BPDU guard an effective way to prevent an unauthorized rogue switch from altering the
spanning-tree topology of a network?
A. BPDU guard can guarantee proper selection of the root bridge.
B. BPDU guard can be utilized along with PortFast to shut down ports when a switch is connected to the
port.
C. BPDU guard can be utilized to prevent the switch from transmitting BPDUs and incorrectly altering the
root bridge election.
D. BPDU guard can be used to prevent invalid BPDUs from propagating throughout the network.
Answer: B
Cisco問題集 642-813 642-813 642-813 642-813過去問
NO.12 What is one method that can be used to prevent VLAN hopping?
A. Configure ACLs.
B. Enforce username and password combinations.
C. Configure all frames with two 802.1Q headers.
D. Explicitly turn off DTP on all unused ports.
E. Configure VACLs.
Answer: D
Cisco認定資格 642-813問題集 642-813参考書 642-813
NO.13 Refer to the exhibit.
Dynamic ARP Inspection is enabled only on switch SW_A. Host_A and Host_B acquire their IP addresses
from the DHCP server connected to switch SW_A. What would the outcome be if Host_B initiated an ARP
spoof attack toward Host_A ?
A. The spoof packets are inspected at the ingress port of switch SW_A and are permitted.
B. The spoof packets are inspected at the ingress port of switch SW_A and are dropped.
C. The spoof packets are not inspected at the ingress port of switch SW_A and are permitted.
D. The spoof packets are not inspected at the ingress port of switch SW_A and are dropped.
Answer: C
Cisco認証試験 642-813 642-813認定試験 642-813 642-813参考書
NO.14 What does the command udld reset accomplish?
A. allows a UDLD port to automatically reset when it has been shut down
B. resets all UDLD enabled ports that have been shut down
C. removes all UDLD configurations from interfaces that were globally enabled
D. removes all UDLD configurations from interfaces that were enabled per-port
Answer: B
Cisco 642-813認定資格 642-813認定試験
NO.15 Which statement is true about RSTP topology changes?
A. Any change in the state of the port generates a TC BPDU.
B. Only nonedge ports moving to the forwarding state generate a TC BPDU.
C. If either an edge port or a nonedge port moves to a block state, then a TC BPDU is generated.
D. Only edge ports moving to the blocking state generate a TC BPDU.
E. Any loss of connectivity generates a TC BPDU.
Answer: B
Cisco 642-813 642-813認定証 642-813認証試験 642-813
NO.16 What are two methods of mitigating MAC address flooding attacks? (Choose two.)
A. Place unused ports in a common VLAN.
B. Implement private VLANs.
C. Implement DHCP snooping.
D. Implement port security.
E. Implement VLAN access maps
Answer: DE
Cisco 642-813 642-813認定証 642-813
NO.17 Refer to the exhibit.
Which VRRP statement about the roles of the master virtual router and the backup virtual router is true?
A. Router A is the master virtual router, and router B is the backup virtual router. When router A fails,
router B becomes the master virtual router. When router A recovers, router B maintains the role of master
virtual router.
B. Router A is the master virtual router, and router B is the backup virtual router. When router A fails,
router B becomes the master virtual router. When router A recovers, it regains the master virtual router
role.
C. Router B is the master virtual router, and router A is the backup virtual router. When router B fails,
router A becomes the master virtual router. When router B recovers, router A maintains the role of master
virtual router.
D. Router B is the master virtual router, and router A is the backup virtual router. When router B fails,
router A becomes the master virtual router. When router B recovers, it regains the master virtual router
role.
Answer: B
Cisco認定証 642-813 642-813
NO.18 When an attacker is using switch spoofing to perform VLAN hopping, how is the attacker able to gather
information?
A. The attacking station uses DTP to negotiate trunking with a switch port and captures all traffic that is
allowed on the trunk.
B. The attacking station tags itself with all usable VLANs to capture data that is passed through the switch,
regardless of the VLAN to which the data belongs.
C. The attacking station generates frames with two 802.1Q headers to cause the switch to forward the
frames to a VLAN that would be inaccessible to the attacker through legitimate means.
D. The attacking station uses VTP to collect VLAN information that is sent out and then tags itself with the
domain information to capture the data.
Answer: A
Cisco 642-813認定資格 642-813 642-813過去問 642-813練習問題
NO.19 Refer to the exhibit.
Assume that Switch_A is active for the standby group and the standby device has only the default HSRP
configuration. Which statement is true?
A. If port Fa1/1 on Switch_A goes down, the standby device takes over as active.
B. If the current standby device had the higher priority value, it would take over the role of active for the
HSRP group.
C. If port Fa1/1 on Switch_A goes down, the new priority value for the switch would be 190.
D. If Switch_A had the highest priority number, it would not take over as active router.
Answer: C
Cisco認定資格 642-813過去問 642-813認定試験 642-813
NO.20 Refer to the exhibit.
DHCP snooping is enabled for selected VLANs to provide security on the network. How do the switch
ports handle the DHCP messages?
A. A DHCPOFFER packet from a DHCP server received on Ports Fa2/1 and Fa2/2 is dropped.
B. A DHCP packet received on ports Fa2/1 and Fa2/2 is dropped if the source MAC address and the
DHCP client hardware address does not match Snooping database.
C. A DHCP packet received on ports Fa2/1 and Fa2/2 is forwarded without being tested.
D. A DHCPRELEASE message received on ports Fa2/1 and Fa2/2 has a MAC address in the DHCP
snooping binding database, but the interface information in the binding database does not match the
interface on which the message was received and is dropped.
Answer: C
Cisco認定資格 642-813 642-813過去問 642-813認定資格
Cisco認証試験に参加する方はIT-Passports.comの問題集を買ってください。成功を祈ります。
没有评论:
发表评论