CCNA Routing and Switching Complete Study Guide. Todd LammleЧитать онлайн книгу.
interfaces on which to activate OSPF using the network command with wildcards and specification of an area. Option F is wrong because there must be a space after the parameter area and before you list the area number. See Chapter 9 for more information.
42. A. By default, switches break up collision domains on a per-port basis but are one large broadcast domain. See Chapter 1 for more information.
43. B. At the moment of OSPF process startup, the highest IP address on any active interface will be the router ID (RID) of the router. If you have a loopback interface configured (logical interface), then that will override the interface IP address and become the RID of the router automatically. See Chapter 18 for more information.
44. C, D. VLAN Trunking Protocol (VTP) is not right because it has nothing to do with trunking except that it sends VLAN information across a trunk link. 802.1q and ISL encapsulations are used to configure trunking on a port. See Chapter 11 for more information.
45. D. Stub networks have only one connection to an internetwork. Default routes should be set on a stub network or network loops may occur; however, there are exceptions to this rule. See Chapter 9 for more information.
46. B. Hubs regenerate electrical signals, which are specified at the Physical layer. See Chapter 1 for more information.
47. A, C. Standard and extended access control lists (ACLs) are used to configure security on a router. See Chapter 12 for more information.
48. C. If you start at 192.168.128.0 and go through 192.168.159.0, you can see that this is a block of 32 in the third octet. Since the network address is always the first one in the range, the summary address is 192.168.128.0. What mask provides a block of 32 in the third octet? The answer is 255.255.224.0, or /19. See Chapter 5 for more information.
49. B. The command to back up the configuration on a router is copy running-config startup-config. See Chapter 7 for more information.
50. C. IEEE 802.3ab is the standard for 1 Gbps on twisted-pair. See Chapter 2 for more information.
51. C. User Datagram Protocol is a connection network service at the Transport layer, and DHCP uses this connectionless service. See Chapter 3 for more information
52. E. The clock rate command is two words, and the speed of the line is in bits per second (bps). See Chapter 6 for more information.
53. C. The show ip interface command will show you if any interfaces have an outbound or inbound access list set. See Chapter 12 for more information.
54. C. Unlike ISL, which encapsulates the frame with control information, 802.1q inserts an 802.1q field along with tag control information. See Chapter 11 for more information.
55. C. The PDU encapsulation method defines how data is encoded as it goes through each layer of the TCP/IP model. Data is segmented at the Transport later, packets created at the Network layer, frames at the Data Link layer, and finally, the Physical layer encodes the 1s and 0s into a digital signal. See Chapter 2 for more information.
56. A. With a multilayer switch, enable IP routing and create one logical interface for each VLAN using the interface vlan number command and you're now doing inter-VLAN routing on the backplane of the switch! See Chapter 11 for more information.
Assessment Test
1. What is the sys-id-ext field in a BPDU used for?
A. It is a 4-bit field inserted into an Ethernet frame to define trunking information between switches.
B. It is a 12-bit field inserted into an Ethernet frame to define VLANs in an STP instance.
C. It is a 4-bit field inserted into an non-Ethernet frame to define EtherChannel options.
D. It is a 12-bit field inserted into an Ethernet frame to define STP root bridges.
2. You have four RSTP PVST+ links between switches and want to aggregate the bandwidth. What solution will you use?
A. EtherChannel
B. PortFast
C. BPDU Channel
D. VLANs
E. EtherBundle
3. What configuration parameters must be configured the same between switches for LACP to form a channel? (Choose three.)
A. Virtual MAC address
B. Port speeds
C. Duplex
D. PortFast enabled
E. Allowed VLAN information
4. You reload a router with a configuration register setting of 0x2101. What will the router do when it reloads?
A. The router enters setup mode.
B. The router enters ROM monitor mode.
C. The router boots the mini-IOS in ROM.
D. The router expands the first IOS in flash memory into RAM.
5. Which of the following commands provides the product ID and serial number of a router?
A. show license
B. show license feature
C. show version
D. show license udi
6. Which command allows you to view the technology options and licenses that are supported on your router along with several status variables?
A. show license
B. show license feature
C. show license udi
D. show version
7. Which of the following services provide the operating system and the network?
A. IaaS
B. PaaS
C. SaaS
D. none of the above
8. You want to send a console message to a syslog server, but you only want to send status messages of 3 and lower. Which of the following commands will you use?
A. logging trap emergencies
B. logging trap errors
C. logging trap debugging
D. logging trap notifications
E. logging trap critical
F. logging trap warnings
G. logging trap alerts
9. When stacking switches, which is true? (Choose 2)
A. The stack is managed as multiple objects, and has a single management IP address
B. The stack is managed as a single object, and has a single management IP address
C. The master switch is chosen when you configure the first switches master algorithm to on
D. The master switch is elected form one of the stack member switches
10. You need to connect to a remote IPv6 server in your virtual server farm. You can connect to the IPv4 servers, but not the critical IPv6 server you desperately need. Based on the following output, what could your problem be?
A. The global address is in the wrong subnet.
B. The IPv6 default gateway has not been configured or received from the router.
C. The link-local address has not been resolved so the host cannot communicate to the router.
D. There are two IPv6 global addresses configured. One must be removed from the configuration.
11. What command is used to view the IPv6-to-MAC-address resolution table on a Cisco router?
A. show ip arp
B. show ipv6 arp
C. show