單項(xiàng)選擇題Which type of attack is characterized by flood of packet that requesing a TCP connection to a server?（）

A. denial of service
B. brute force
C. reconnaissance
D. Trojan horse


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題What is the default routing update period for RIPv2?（）

A. 15 seconds
B. 30 seconds
C. 180 seconds
D. 240 seconds

2.單項(xiàng)選擇題An administrator issues the command ping 127.0.0.1 from the command line prompt on a PC. If a reply is received, what does this confirm?（）

A. The PC has connectivity with a local host.
B. The PC has connectivity with a Layer 3 device.
C. The PC has a default gateway correctly configured
D. The PC has connectivity up to Layer 5 of the OSI model
E. The PC has the TCP/IP protocol stack correctly installed.

3.單項(xiàng)選擇題How does using the service password encryption command on a router provide additional security? （）

A. by encrypting all passwords passing through the router
B. by encrypting passwords in the plain text configuration file
C. by requiring entry of encrypted passwords for access to the device
D. by configuring an MD5 encrypted key to be used by routing protocols to validate routing exchanges
E. by automatically suggesting encrypted passwords for use in configuring the router

4.單項(xiàng)選擇題What is the maximum data rate specified for IEEE 802.11b WLANs?（）

A. 10 Mbps
B. 11 Mbps
C. 54 Mbps
D. 100 Mbps

6.單項(xiàng)選擇題Running both IPv4 and IPv6 on a router simultaneously is known as what?（）

A. 4to6 routing
B. 6to4 routing
C. binary routing
D. dual-stack routing
E. NextGen routing

7.單項(xiàng)選擇題What is an appropriate use of a default route?（）

A. to provide routing to a local web server
B. to provide routing from an ISP to a stub network
C. to provide routing that will override the configured dynamic routing protocol
D. to provide routing to a destination that is not specified in the routing table and which is outside the local network

9.單項(xiàng)選擇題The network administrator has discovered that the power supply has failed on a switch in the company LAN and that the switch has stopped functioning. It has been replaced with a Cisco Catalyst 2950 series switch. What must be done to ensure that this new switch becomes the root bridge on the network?（）

A. Lower the bridge priority number.
B. Change the MAC address of the switch.
C. Increase the VTP revision number for the domain.
D. Lower the root path cost on the switch ports.
E. Assign the switch an IP address with the lowest value.

10.單項(xiàng)選擇題Which command shows if an access list is assigned to an interface?（）

A. show ip interface [interface] access-lists
B. show ip access-lists interface [interface]
C. show ip interface [interface]
D. show ip access-lists [interface]