Discussion
Home ‣ Networking ‣ TCP/IP See What Others Are Saying!
- Question
Which statements are true regarding ICMP packets?
- They acknowledge receipt of a TCP segment.
- They guarantee datagram delivery.
- They can provide hosts with information about network problems.
- They are encapsulated within IP datagrams.
Options- A. 1 only
- B. 2 and 3
- C. 3 and 4
- D. 2, 3 and 4
- Correct Answer
- 3 and 4
ExplanationInternet Control Message Protocol (ICMP) is used to send error messages through the network, but they do not work alone. Every segment or ICMP payload must be encapsulated within an IP datagram (or packet). - 1. In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?
Options- A. During high-traffic periods
- B. After broken links are reestablished
- C. When upper-layer protocols require high reliability
- D. In an improperly implemented redundant topology Discuss
- 2. What is the purpose of Spanning Tree Protocol in a switched LAN?
Options- A. To provide a mechanism for network monitoring in switched environments
- B. To prevent routing loops in networks with redundant paths
- C. To prevent switching loops in networks with redundant switched paths
- D. To manage the VLAN database across multiple switches
- E. To create collision domains Discuss
- 3. If you want to disable STP on a port connected to a server, which command would you use?
Options- A. disable spanning-tree
- B. spanning-tree off
- C. spanning-tree security
- D. spanning-tree portfast Discuss
- 4. Which of the following commands connect access list 110 inbound to interface ethernet0?
Options- A. Router(config)# ip access-group 110 in
- B. Router(config)# ip access-list 110 in
- C. Router(config-if)# ip access-group 110 in
- D. Router(config-if)# ip access-list 110 in Discuss
- 5. You want to create a standard access list that denies the subnet of the following host: 172.16.50.172/20. Which of the following would you start your list with?
Options- A. access-list 10 deny 172.16.48.0 255.255.240.0
- B. access-list 10 deny 172.16.0.0 0.0.255.255
- C. access-list 10 deny 172.16.64.0 0.0.31.255
- D. access-list 10 deny 172.16.48.0 0.0.15.255 Discuss
- 6. Which of the following describes an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model?
Options- A. HDLC
- B. Cable
- C. VPN
- D. IPSec
- E. xDSL Discuss
- 7. What protocols are used to configure trunking on a switch?
- VLAN Trunking Protocol
- VLAN
- 802.1Q
- ISL
Options- A. 1 and 2
- B. 3 and 4
- C. 1 only
- D. 2 only Discuss
- 8. When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the clock rate determined?
Options- A. Supplied by the CSU/DSU
- B. By the far end router
- C. By the clock rate command
- D. By the Physical layer bit stream timing Discuss
- 9. What are the decimal and hexadecimal equivalents for the binary number 10110111?
Options- A. 69/0x2102
- B. 183/B7
- C. 173/A6
- D. 83/0xC5 Discuss
- 10. What type of RJ45 UTP cable is used between switches?
Options- A. Straight-through
- B. Crossover cable
- C. Crossover with a CSU/DSU
- D. Crossover with a router in between the two switches Discuss
More questions
Correct Answer: In an improperly implemented redundant topology
Explanation:
If the Spanning Tree Protocol is not running on your switches and you connect them together with redundant links, you will have broadcast storms and multiple frame copies.
Correct Answer: To prevent switching loops in networks with redundant switched paths
Explanation:
The Spanning Tree Protocol (STP) was designed to stop layer 2 loops. All Cisco switches have the STP on by default.
Correct Answer: spanning-tree portfast
Explanation:
If you have a server or other devices connected into your switch that you're totally sure won't create a switching loop if STP is disabled, you can use something called
portfast on these ports. Using it means the port won't spend the usual 50 seconds to come up while STP is converging.
Correct Answer: Router(config-if)# ip access-group 110 in
Explanation:
To place an access list on an interface, use the
ip access-group command in interface configuration mode.
Correct Answer: access-list 10 deny 172.16.48.0 0.0.15.255
Explanation:
First, you must know that a /20 is 255.255.240.0, which is a block size of 16 in the third octet. Counting by 16s, this makes our subnet 48 in the third octet, and the wildcard for the third octet would be 15 since the wildcard is always one less than the block size.
Correct Answer: IPSec
Explanation:
IPSec is an industry-wide standard suite of protocols and algorithms that allows for secure data transmission over an IP-based network that functions at the layer 3 Network layer of the OSI model.
Correct Answer: 3 and 4
Explanation:
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 are used to configure trunking on a port.
Correct Answer: Supplied by the CSU/DSU
Explanation:
Clocking on a serial interface is always provided by the CSU/DSU (DCE device). However, if you do not have a CSU/DSU in your nonproduction test environment, then you need to supply clocking with the
clock rate command on the serial interface of the router with the DCE cable attached.
Correct Answer: 183/B7
Explanation:
You must be able to take a binary number and convert it into both decimal and hexadecimal. To convert to decimal, just add up the 1s using their values. The values that are turned on with the binary number of
10110111 are
128 + 32 + 16 + 4 + 2 + 1 = 183. To get the hexadecimal equivalent, you need to break the eight binary digits into nibbles (4 bits),
1011 and
0111. By add- ing up these values, you get
11 and
7. In hexadecimal,
11 is
B, so the answer is
0xB7.
Correct Answer: Crossover cable
Explanation:
To connect two switches together, you would use a RJ45 UTP crossover cable.
Comments
There are no comments.Programming
Copyright ©CuriousTab. All rights reserved.