050-649 試験問題を無料オンラインアクセス

Which firewall consists of a host system with two network interfaces with routing disabled?

• A.Dual-homed host
• B.Bastion host
• C.Screened host
• D.Screened subnet
• E.Tri-homed host

CORRECT TEXT
How many keys are used for symmetric encryption? (Enter a number.)

Which statements are true regarding Network Time Protocol (NTP)? (Choose 3.)

• A.NTP specifies the precision of the local clock.
• B.NTP specifies the estimated error of the reference clock.
• C.NTP uses the ICMP Timestamp message.
• D.NTP uses UDP.
• E.NTP specifies the synchronizing algorithms for network clocks.

What is the purpose of the NSLOOKUP utility?

• A.Looks up the MAC address used to reach a local host
• B.Determines the number of DNS servers on the local network
• C.Performs DNS record lookups
• D.Detemines if local host tables are used for name resolution
• E.Queries NDS object properties

Which tool can be used to examine ICMP communications from a router?

• A.NSLOOKUP
• B.ROUTE
• C.TRACEROUTE
• D.ARP/RARP
• E.A protocol analyzer