Cisco CCDP 642-892认证信息

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1. Refer to the exhibit. EIGRP is configured on all routers in the network. On the basis of the output provided, which statement is true?
# r) w/ K5 R: E2 I- A
1 S" w* q+ u) a1 q$ ]A. Because the key chain names do not match, router R1 will not be able to ping routers R2 and R3 .
, V. N  {0 g/ l& o$ ?B. Because the key strings do not match, router R1 will not be able to ping routers R2 and R3.
C. Because authentication is misconfigured on interfaces Gi0/0 and Gi0/1 on router R2, router R1 will not be able to ping routers R2 and R3.
D. Because autosummarization needs to be turned on for EIGRP on all routers, router R1 will  not be able to ping routers R2 and R3.
E. Router R1 will be able to ping routers R2 and R3.
Answer: E

2. The switches shown in the diagram, Core and Core2, are both Catalyst 2950s. The addressing scheme for each company site is as follows:
6 u) r: t& ], i4 D& b) d. ^$ i! DRouter Ethernet port - 1st usable address
Core - 2nd usable address
4 {* {* l: h9 h  l" {. y  rCore2 - 3rd usable address
3 v) N5 O# o! V3 SFor this network, which of the following commands must be configured on Core2 to
allow it to be managed remotely from any subnet on the network? (Choose three.)

* Y9 h7 D) P2 V' T& hA. Core2(config)# interface f0/0
   Core2(config-if)# ip address 192.168.1.10 255.255.255.248
B. Core2(config)# interface vlan 1
   Core2(config-if)# ip address 192.168.1.11 255.255.255.248
/ M; m' N! e  l! J7 W# aC. Core2(config)# line con 0
   Core2(config-line)# password cisco
/ j* D3 J( A4 g: U, l5 KD. Core2(config)# line vty 0 4
   Core2(config-line)# password cisco
E. Core2(config)# ip default-gateway 192.168.1.9
" _, D0 B; C+ r/ O9 RF. Core2(config)# ip route 0.0.0.0 0.0.0.0 192.168.1.8
Answer: BDE

3. Which statement is true about IPv6?
A. Only one IPv6 address is assigned per node.
+ O; I2 ?$ r) M4 k5 I5 ^$ X: S9 W9 FB. Only one IPv6 address can be assigned to each interface.
C. Each host can autoconfigure its address without the aid of a DHCP server.
D. IPv6 hosts use anycast addresses to assign IP addresses to interfaces.
( A. Q" q( E$ h( k! ~: [Answer: C

4. Which two features or capabilities are valid options for both an Autonomous and a Lightweight WLAN solution? (Choose two)
A. use of a Cisco Wireless Location Appliance for location tracking
B. use of Cisco Secure Access Control Server (ACS) for security
C. Cisco Wireless Control System (WCS) for management
D. PoE capability
Answer: BD

5. Which three statements are true about EIGRP route summarization? (Choose three.)
A. Manual route summarization is configured in router configuration mode when the router is configured for EIGRP routing.
B. Manual route summarization is configured on the interface.
C. When manual summarization is configured, the summary route will use the metric of the largest specific metric of the summary routes.
D. The ip summary-address eigrp command generates a default route with an administrative distance of 90.
E. The ip summary-address eigrp command generates a default route with an administrative distance of 5.
) o1 a; |* Y$ F& N+ }( A+ V' gF. When manual summarization is configured, the router immediately creates a route that points to null0 interface.
Answer: BEF

5. Which two statements about the IS-IS routing protocol are true? (Choose two.)
: l- \3 f/ \: I: B5 oA. IS-IS is capable of supporting IPv4 and IPv6.
; }( Z5 s4 x/ _8 YB. IS-IS is only capable of supporting IPv4 and CLNS.
C. IS-IS routers use ES-IS hellos (ESH) to establish and to maintain neighbor relationships.
+ D2 ^5 _5 w6 VD. IS-IS routers run the Bellman-Ford algorithm against their LSDBs to pick the best paths.
E. Level 1 routers learn about paths within the area of which they are a part.
F. Level 2 routers learn about paths both within areas and between areas.
Answer: AE

6. 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 (DAI) to determine vulnerable attack points.
B. DHCP snooping sends unauthorized replies to DHCP queries.
6 d5 D& `3 y) @9 JC. 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.
4 s2 G7 g+ y, TF. Port scanners are the most effective defense against dynamic ARP inspection.
! l/ |0 s! D- l" S2 j% `: xAnswer: E

7. Refer to the exhibit. A network administrator has configured DHCP services on the router as shown. DHCP clients connected to the FastEthernet0/0 interface are working properly. DHCP clients connected to the FastEthernet0/1 interface are not receiving addresses. Which two statements contain recommendations that will solve the problem? (Choose two.)

1 K" `. F* N2 E; B$ S- qA. The ip helper-address 10.0.0.1 command should be issued so that the address can be added to the FastEthernet0/0 configuration.
: w2 b$ f3 o9 ]. |% s; CB. The ip helper-address 10.0.0.1 command should be issued so that the address can be added to the FastEthernet0/1 configuration.
. @( v, n0 X3 i9 v; T: A3 w4 P, qC. A second DHCP pool for network 10.10.0.0/24 should be configured.
D. The network shown in the output under the ip dhcp pool Central command should be changed to network 10.10.0.0 with a mask of 255.255.255.0.
5 O' ~6 }' {; _: I/ [E. An ip dhcp excluded-address global configuration command for network 10.10.0.0/24 should be issued.
/ l' v0 ~0 d" K( u" F* lAnswer: CE

8. Which two statements about WLAN components are true? (Choose two.)
* J$ L- V( t& o- [. h0 ]0 a$ QA. Cisco Aironet autonomous access points cannot be supported by the Cisco Unified Wireless Network.
B. Cisco Aironet lightweight access points cannot be supported by the Cisco Unified Wireless Network.
& m' g" d7 S! L4 W, E! F+ uC. In the autonomous access point solution, control is provided by the Wireless Domain Services (WDS).
D. In the autonomous access point solution, control is provided by the WLAN controller.
E. In the lightweight access point solution, WLAN management is provided by the WLAN Solution Engine (WLSE).
F. In the lightweight access point solution, WLAN management is provided by the WLAN Control System (WCS).
Answer: CF

9. Which command will display EIGRP packets sent and received, as well as statistics on hello packets, updates, queries, replies, and acknowledgments?
A. debug eigrp packets
- S- _; a2 s  m+ b, WB. show ip eigrp traffic
C. debug ip eigrp
D. show ip eigrp interfaces
Answer: B

10. Which three statements are true about implementing Cisco wireless LANs? (Choose three.)
A. LWAPP allows encrypted communication between lightweight access points and WLAN controllers.
B. The WLAN Solution Engine (WLSE) is used to control lightweight access points.
C. Power over Ethernet (PoE) is only available when a WLAN controller is integrated into the network.
D. One of the advantages of the lightweight WLAN solution is that the devices act independently.
$ K0 `/ L* |' B& LE. Antenna power is a relative value reference to dBi.
# q7 g& R1 m( M" C! x" ?F. Characteristics of antennas are directionality, gain, and polarization.
% _2 ~) j+ p; g/ p. t& wAnswer: