Peripherals AVMS

Vendor: Cisco Exam Code: 200-125 Exam Name: CCNA Cisco Certified Network Associate CCNA (v3.0) Version: DemoDEMO

QUESTION 1 A network administrator needs to configure a serial link between the main office and a remote location. The router at the remote office is a non-Cisco 200-125 dumps router. How should the network administrator configure the serial interface of the main office router to make the connection? A. Main(config)# interface serial 0/0 Main(config-if)# ip address Main(config-if)# no shut B. Main(config)# interface serial 0/0 Main(config-if)# ip address Main(config-if)# encapsulation ppp Main(config-if)# no shut C. Main(config)# interface serial 0/0 Main(config-if)# ip address Main(config-if)# encapsulation frame-relay Main(config-if)# authentication chap Main(config-if)# no shut D. Main(config)# interface serial 0/0 Main(config-if)#ip address Main(config-if)#encapsulation ietf Main(config-if)# no shut Correct Answer: B

QUESTION 2 Which Layer 2 protocol encapsulation type supports synchronous and asynchronous circuits and has built- in security mechanisms? A. HDLC B. PPP C. X.25 D. Frame Relay Correct Answer: B

QUESTION 3 Refer to the exhibit. The two connected ports cissp dumps on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three.)A. Ensure that the Ethernet encapsulations match on the interconnected router and switch ports. B. Ensure that cables A and B are straight-through cables. C. Ensure cable A is plugged into a trunk port. D. Ensure the switch has power. E. Reboot all of the devices. F. Reseat all cables. Correct Answer: BDF

QUESTION 4 A network administrator is troubleshooting the OSPF 100-105 dumps configuration of routers R1 and R2. The routers cannot establish an adjacency relationship on their common Ethernet link. The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2. Based on the information in the graphic, what is the cause of this problem? A. The OSPF area is not configured properly. B. The priority on R1 should be set higher. C. The cost on R1 should be set higher. D. The hello and dead timers are not configured properly. E. A backup designated router needs to be added to the network. F. The OSPF process ID numbers must match. Correct Answer: D

QUESTION 5 Standard industrialized protocol of etherchannel? A. LACP B. PAGP C. PRP D. REP Correct Answer: A

210-260 dumps QUESTION 6 Two features of the extended ping command? (Choose two.) A. It can send a specific number of packet B. It can send packet from specified interface of IP address C. It can resolve the destination host nameD. It can ping multiple host at the same time Correct Answer: AB

QUESTION 7 What command is used to configure a switch as authoritative NTP server? A. ntp master 3 B. ntp peer IP C. ntp server IP D. ntp source IP Correct Answer: A

QUESTION 8 Two statements about syslog loging? A. Syslog logging is disabled by default B. Messages are stored in the internal memory of device C. Messages can be erased when device reboots D. Messages are stored external to the device E. other F. other Correct Answer: AD

QUESTION 9 How to enable vlans automatically across multiple switches? A. Configure VLAN B. Confiture NTP C. Configure each VLAN D. Configure VTP Correct Answer: D

QUESTION 10 Refer to the exhibit. A network administrator is configuring an EtherChannel 300-101 dumps between SW1 and SW2. The SW1 configuration isshown. What is the correct configuration for SW2? A. interface FastEthernet 0/1 channel-group 1 mode active switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode active switchport trunk encapsulation dot1q switchport mode trunk B. interface FastEthernet 0/1 channel-group 2 mode auto switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 2 mode auto switchport trunk encapsulation dot1q switchport mode trunk C. interface FastEthernet 0/1 channel-group 1 mode desirable switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode 640-911 dumps desirable switchport trunk encapsulation dot1q switchport mode trunk D. interface FastEthernet 0/1 channel-group 1 mode passive switchport trunk encapsulation dot1q switchport mode trunk interface FastEthernet 0/2 channel-group 1 mode passive switchport trunk encapsulation dot1q switchport mode trunk Correct Answer: C

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Peripheral Arteriovenous Malformation

A peripheral AVM is located outside of the head, neck and spine. It can occur anywhere, including the arms and legs, heart, lungs, liver and other abdominal organs, and even the reproductive or genital system.

Above photo shows symptomatic veins of a facial AVM

An arteriovenous malformation or AVM is a disorder in which the blood vessels within a specific area of the body are incorrectly formed, resulting in multiple abnormal communications between the arteries and the veins. The circulation in the normal tissue consists of arteries, capillaries, and veins. The capillaries are tiny channels throughout every tissue of the body that carry arterial blood with its oxygen and nutrients to the cells of the body. After passing through capillaries, blood is collected by veins. The blood pressure in the normal veins is much lower than the blood pressure in the arteries. In an arteriovenous malformation, some of the capillaries are replaced by larger channels that connect the arteries directly to the veins. The direct connection is called a shunt because it shunts, or diverts, the blood from the artery directly to the vein, bypassing the capillaries. The channels between the artery and vein are termed the nidus. The nidus can consist of a vast number of tiny shunts, or a smaller number of large arteriovenous shunts. The number of arteries supplying an AVM and the number of veins draining it are quite variable. In a peripheral arteriovenous malformation, the shunt has the effect of reducing the blood supply with its nutrients and oxygen to the tissue around it, raising the blood pressure in the draining veins, and increasing the amount of blood that is pumped through the arteries and veins. In time, the shunting through a peripheral AVM damages the surrounding tissue and increases the work done by the heart.


Symptoms Of Peripheral Arteriovenous Malformations:

The symptoms or effects of a peripheral AVM will depend on the size and number of the arteriovenous shunts, and the amount of tissue that is involved. In general, an AVM causes enlargement of the tissue containing it, both because of the increased size of the arteries and veins, and because the affected tissue grows faster and larger than the normal tissue. When there is an extremely large shunt, a peripheral AVM can result in heart failure. This typically occurs either at birth, or later in life after progression of the AVM. Most AVM’s evolve or progress over time. They often start out in a quiet or quiescent phase in which the patient may have some redness and heat of the skin over the arteriovenous malformation. With progression, the patient will enter the phase of expansion or enlargement in which the affected area appears more swollen due to the presence of enlarged veins. If the peripheral AVM continues to progress, it will start to cause tissue damage (phase of destruction). Because of the poorblood supply to the tissue, the patient may develop some pain, skin breakdown and possibly even bleeding. The rate at which the evolution or progression of the AVM occurs is extremely variable. It usually takes many years. Some factors that are known to cause worsening of AVMs include hormonal changes at the time of puberty or during pregnancy, trauma or injury, or surgery. While we do not understand the precise reason for progression of peripheral arteriovenous malformations, we believe that certain processes or events in the body can cause levels of certain growth factors to increase. The growth factors appear to stimulate angiogenesis, or growth of the blood vessels within the peripheral AVM.


Treatment Of Peripheral Arteriovenous Malformations:
  • SUPPORTIVE CARE: Swelling and discomfort related to an AVM of the arm or leg can sometimes be improved by wearing a graded elastic compression sleeve or stocking. This serves to compress the enlarged veins and reduce the swelling.
  • EMBOLIZATION: Embolization is used as a primary or main treatment of an peripheral AVM, or to prepare the patient for surgery. When the embolization is used as the main treatment, it is usually carried out as a series of procedures spread out over time. To achieve a good result, it is important that the shunts themselves, not the feeding arteries or draining veins, be closed using a permanent type of embolic agent. Materials that are effective in treating AVMs include embolization glue (n-butyl-2cyanoacrylate), Onyx, and absolute alcohol. Embolization coils are sometimes used to close large shunts within the AVM or draining veins but should not be used to close the feeding arteries.
  • PREOPERATIVE EMBOLIZATION: Some localized arteriovenous malformations can be removed surgically. In order to reduce bleeding at the time of surgery, embolization is carried out to block the feeding arteries to the peripheral AVM, usually one or two days before surgery. In this type of embolization, particles or absorbable embolic material may be used.