By default,how does the router handle changes to its operational configuration？（）

A.A

B.B

C.C

D.D

A.1

B.2

C.3

D.4

E.5

F.6

A.Every 5 minutes

B. Every 90 seconds

C. Every 60 seconds

D. Every 30 seconds

A. By calculating the time offset from the GPS or atomic clock

B. By setting the router clock to the default value if the router can‘t connect to a time server

C. By setting all network devices to the correct time

D. By setting necessary time date in the timestamp information

A. Use ping and the show ip route command to confirm the timers for each default network resets to 0.

B. Load balancing does not occur over default networks; the second route will only be used for failover.

C. Use an extended ping al ong with repeated show ip route commands to confirm the gateway of last resort address toggles back and forth.

D. Use the traceroute command to an address that is not explicitly in the routing table.

ysqld] Loq-bin Binrylog_format=ROW You do not notice the spelling error in binrylog_format and restart your production server. How does the MySQL server behave with incorrectly spelled options？（）

A.Mysqld uses internal configuration versioning and reverts to the previous configuration

B.When using mysql_config_editor for configuration adjustments, it detects incorrect syntax and typing mistakes

C.The mysqld_safe script skips the unknown variable and starts using the remaining configuration changes

D.Mysqld prints to the error log about an unknown variable, and then exits

A. It immediately sends its entire routing table to its neighbors.

B. EIGRP sends a Hello packet to the DR to inform it of the route failure.

C. It automatically forwards traffic to a fallback default route until a successor route is found.

D. It sends queries out to neighbors until a new successor route is found.

E. It places the route in holddown until LSA updates inform it of a new route to the network.

听力原文： A certificate of deposit (CD) is a time deposit with a bank. Time deposits may not be withdrawn on demand like a check account. CDs are generally issued by commercial banks but they can be bought through brokerages. They bear a specific maturity date that usually lasts from 3 months to 5 years, a specified interest rate, and can be issued in any denomination, very similar to bonds. CDs offer a slightly higher yield than T-Bills because of the slightly higher default risk for a bank, but overall the likeliness of a large bank going broke is pretty slim. Of course, the amount of interest you earn depends on a number of factors such as the current interest rate environment, how much money you invest, the length of time, and your specific bank.

24. What is a CD？

25.Which of the followings generally issue CDs？

26.How long does a specific maturity usually last？

27.Why do CDs pay higher return to investors than T-bills？

(24)

A．A term deposit that can be drawn at any time.

B．A time deposit with a bank.

C．A current deposit.

D．A cheek account.

A.reset configuration

B.load factory-default

C.load override default

D.set default configuration

A.224.0.0.2

B.224.0.0.5

C.224.0.0.9

D.255.255.255.255