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Exam Code: 642-998
Exam Name: Designing Cisco Data Center Unified Computing
One year free update, No help, Full refund!
642-998 Practice Questions Total Q&A: 182 Questions and Answers
Last Update: 01-05,2016

642-998 Exam Questions Detail: 642-998 Practice Questions

Exam Code: 300-080
Exam Name: Troubleshooting Cisco IP Telephony & Video v1.0
One year free update, No help, Full refund!
300-080 Free Demo Total Q&A: 118 Questions and Answers
Last Update: 01-05,2016

300-080 Free Demo Detail: 300-080 Free Demo

Exam Code: 640-875
Exam Name: Building Cisco Service Provider Next-Generation Networks, Part 1 (SPNGN1)
One year free update, No help, Full refund!
640-875 Test Answers Total Q&A: 191 Questions and Answers
Last Update: 01-05,2016

640-875 Practice Questions Detail: 640-875 Test Answers

NO.1 Which three IP addresses are valid for hosts that belong to the 10.152.0.0/13 subnet? (Choose
three.)
A. 10.161.0.1/13
B. 10.159.255.254/13
C. 10.152.0.0/13
D. 10.153.0.1/13
E. 10.158.255.255/13
F. 10.160.0.1/13
Answer: B,D,E

NO.2 Which two statements about IPv4 DHCP operations are true? (Choose two.)
A. If the DHCP clients and servers are on the same subnet, DHCP uses UDP broadcasts to
communicate between the clients and servers.
B. The client broadcasts a DHCPDISCOVER message on UDP port 68 with its own MAC address to
discover available DHCP servers.
C. If the client and server are on different subnets, DHCPDISCOVER and DHCPREQUEST messages are
sent via UDP broadcasts, but DHCPOFFER and DHCPACK messages are unicast.
D. A DHCP relay is required if the DHCP clients and the servers are on the same subnet.
E. A client can receive DHCPOFFER from multiple servers and it can accept all the offers by
broadcasting the DHCPREQUEST message to all the servers.
F. The DHCP server that receives a DHCPDISCOVER message may respond with a DHCPOFFER
message on UDP port 67.
Answer: A,C

640-875 Exam Questions   

NO.3 Which command set is required to enable a remote SNMP query on an IOS-XR router?
A. control-planemanagement-planeinbandinterface allallow SNMPcommit
B. snmp server hostsnmp server contactsnmp-server community stringcommit
C. control-planemanagement-planeinbandinterface allallow SNMP
D. snmp server hostsnmp server contactsnmp-server community string
Answer: A

640-875 Real Questions   

NO.4 Given a ring topology, which loop prevention mechanism provides the fastest reconvergence
time after a link failure?
A. Rapid Per-VLAN Spanning Tree Protocol
B. Multiple Spanning Tree Protocol
C. Spanning Tree Protocol
D. Resilient Ethernet Protocol
Answer: D

640-875 Practice Exam   

NO.5 Which three statements about Ethernet frames are true? (Choose three.)
A. The dot1q tag size is six bytes.
B. The source and destination IP addresses are in the header.
C. FCS is used to recover single-bit errors.
D. The source address is positioned behind the destination address.
E. If the data field is too short, it must be padded.
F. Every frame starts with a preamble.
Answer: D,E,F

640-875 original questions   

NO.6 Which pair of mechanisms are often used together to allow dynamic routing over a secured
site-tosite VPN tunnel?
A. L2TP + IPsec
B. VRF + IPsec
C. VRF + SSL
D. GRE + SSL
E. VTI + SSL
F. GRE + IPsec
Answer: F

640-875 Study Materials   640-875 study guide   

NO.7 DRAG DROP
Drag the concepts from the left and drop them on the correct descriptions on the right.
Answer:

NO.8 Refer to the exhibit.
Given the Class C IP network of 192.168.1.0, using VLSM, which five subnets meet the requirements
in the exhibit? (Choose five.)
A. 192.168.1.48/27
B. 192.168.1.48/28
C. 192.168.1.80/28
D. 192.168.1.64/28
E. 192.168.1.80/29
F. 192.168.1.96/30
G. 192.168.1.0/27
H. 192.168.1.32/27
I. 192.168.1.88/30
Answer: C,D,F,G,H

640-875 Free download   

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