A. It supports VLSM.
B. It is used to route between autonomous systems.
C. It confines network instability to one area of the network.
D. It increases routing overhead on the network.
E. It allows extensive control of routing updates.
F. It is simpler to configure than RIP v2.

A.VTP
B.802.1Q
C.RSTP
D.STP

A.FTP traffic from 192.169.1.22 will be denied
B.No traffic, except for FTP traffic will be allowed to exit E0
C.FTP traffic from 192.169.1.9 to any host will be denied
D.All traffic exiting E0 will be denied
E.All FTP traffic to network 192.169.1.9/29 will be denied

A. hello packets
B. SAP messages sent by other routers 
C. LSAs from other routers
D. beacons received on point-to-point links
E. routing tables received from other link-state routers
F. TTL packets from designated routers

A.HostA is not on the same subnet as its default gateway
B.The address of SwitchA is a subnet address
C.The Fa0/0 interface on RouterA is on a subnet that cannot be used
D.The serial interfaces of the routers are not on the same subnet
E.The Fa0/0 interface on RouterB is using a broadcast address

A.access-list 101 in
B.access-list 101 out
C.ip access-group 101 in
D.ip access-group 101 out

A.access-list 101 deny tcp 192.168.1.128 0.0.0.15 192.168.1.5 0.0.0.0 eq 23  access-list 101 permit ip any any
B.access-list 101 deny tcp 192.168.1.128 0.0.0.240 192.168.1.5 0.0.0.0 eq 23  access-list 101 permit ip any any
C.access-list 1 deny tcp 192.168.1.128 0.0.0.255 192.168.1.5 0.0.0.0 eq 21  access-list 1 permit ip any any
D.access-list 1 deny tcp 192.168.1.128 0.0.0.15 host 192.168.1.5 eq 23  access-list 1 permit ip any any

A.IR
B.DSSS
C.FHSS
D.DSSS and FHSS
E.IR，F(xiàn)HSS，and DSSS

A.L2TP
B.IPsec
C.PPTP
D.RSA

A.A level 5 password is not set
B.The vty password is missing
C.The console password is missing
D.An ACL is blocking Telnet access