Cisco 640-802 questions and answers

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This exam tests a candidate’s knowledge and skills required to install, operate, and troubleshoot a small to medium-size enterprise branch network. The topics include connecting to a WAN, implementing network security, network types, network media, routing and switching fundamentals, the TCP/IP and OSI models, IP addressing, WAN technologies, operating and configuring IOS devices, extending switched networks with VLANs, determining IP routes, managing IP traffic with access lists, establishing point-to-point connections, and establishing Frame Relay connections.

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1.Which statement is correct regarding the operation of DHCP?
A. A DHCP client uses a ping to detect address conficts.
B. A DHCP server uses a gratuitous ARP to detect DHCP clients.
C. A DHCP client uses a gratuitous ARP to detect a DHCP server.
D. If an address conflict is detected, the address is removed from the pool and an administrator must resolve the
conflict.
E. If an address conflict is detected, the address is removed from the pool for an amount of time configurable by the
administrator.
F. If an address conflict is detected, the address is removed from the pool and will not be reused until the server is
rebooted.
Answer:E

2.A network administrator needs to allow only one Telnet connection to a router. For anyone viewing the
configuration and issuing the show run command, the password for Telnet access should be encrypted. Which set of
commands will accomplish this task?
A.service password-encryption
access-list1 permit 192.168.1.0.0.0.0.255
login
password cisco
access-class 1
B.enable password secret
line vty0
login
password cisco
C.service password-encryption
line vty0
login
password cisco
D.service password-encryption
line vty0 4
login
password cisco
Answer:C