多項選擇題What are two characteristics of RIPv2?（）

A. classful routing protocol
B. variable-length subnet masks
C. broadcast addressing
D. manual route summarization
E. uses SPF algorithm to compute path


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2.多項選擇題Which two features did WPAv1 add to address the inherent weaknesses found in WEP?（）

A. a stronger encryption algorithm
B. key mixing using temporal keys
C. shared key authentication
D. a shorter initialization vector
E. per frame sequence counters

3.多項選擇題Which three options are valid WAN connectivity methods?（）

A.PPP
B.WAP
C.HDLC
D.MPLS
E.L2TPv3
F.ATM

4.多項選擇題If IP routing is enabled, which two commands set the gateway of last resort to the default gateway?（）

A. ip default-gateway 0.0.0.0
B. ip route 172.16.2.1 0.0.0.0 0.0.0.0
C. ip default-network 0.0.0.0
D. ip default-route 0.0.0.0 0.0.0.0 172.16.2.1
E. ip route 0.0.0.0 0.0.0.0 172.16.2.1

5.多項選擇題Workstation A has been assigned an IP address of 192.0.2.24/28. Workstation B has been assigned an IP address of 192.0.2.100/28. The two workstations are connected with a straight-through cable. Attempts to ping between the hosts are unsuccessful. What two things can be done to allow communications between the hosts? （）

A. Replace the straight-through cable with a crossover cable.
B. Change the subnet mask of the hosts to /25.
C. Change the subnet mask of the hosts to /26.
D. Change the address of Workstation A to 192.0.2.15.
E. Change the address of Workstation B to 192.0.2.111.

6.多項選擇題Which two addresses can be assigned to a host with a subnet mask of 255.255.254.0？（）

A.113.10.4.0
B.186.54.3.0
C.175.33.3.255
D.26.35.2.255
E.17.35.36.0

7.單項選擇題The network default gateway applying to a host by DHCP is 192.168.5.33/28.Which option is the valid IP address of this host？（）

A.192.168.5.55
B.192.168.5.47
C.192.168.5.40
D.192.168.5.32
E.192.168.5.14

8.單項選擇題Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13.An 802.1Q trunk is configured between the two switches.On CAT1，VLAN10 is chosen as native，but on CAT2 the native VLAN is not specified.What will happen in this scenario？（）

A.802.1Q giants frames could saturate the link.
B.VLAN10 on CAT1 and VLAN1 on CAT2 will send untagged frames.
C.A native VLAN mismatch error message will appear.
D.VLAN10 on CAT1 and VLAN1 on CAT2 will send tagged frames.

9.單項選擇題Which command shows system hardware and software version information？（）

A.show configuration
B.show environment
C.show inventory
D.show platform
E.show version